RedhatEnterpriseLinuxServerConfiguration

YumPackageConfiguration Step1: copyallpackagesfromallcd'stoanylocation #mount/dev/cdrom/mnt #cpvr/mnt/Server/var/ftp/pub #eject Step2: installcreatereporpm #rpmivh/var/ftp/pub/Server/createrepo0.4.42.noarch.rpm Step3: createyumdatabase #createrepog/var/ftp/pub/Server/repodata/compsrhel5server core.xml/var/ftp/pub/Server/ #rmrf/var/ftp/pub/Server/.olddata #createrepog/var/ftp/pub/Server/repodata/compsrhel5server core.xml/var/ftp/pub/Server/ Step4: createyumrepositoryfilein/etc/yum.repos.d/directory #vim/etc/yum.repos.d/sample.repo [Server] name=serverpackages baseurl=file:///var/ftp/pub/Server gpgcheck=0 Step5: cleanyumcacheandlistallpackages #yumcleanall #yumlistall Remotepackageinstallconfiguration Client: Step1: createyumrepositoryfile #vim/etc/yum.repos.d/sample.repo [Server] name=serverpackages baseurl=ftp://192.168.0.10/pub/Server gpgcheck=0 Step2: cleanyumcacheandlistallpackages #yumcleanall #yumlistall Install,RemoveandListPackagesUsingYum List: Listinstalledpackages #yumlistinstalled Listavailablei.enotinstalledpackages #yumlistavailable Listinstalledandavailablepackages #yumlistall GroupList: #yumgrouplistall #yumgrouplistavailable #yumgrouplistinstalled

Install: installsinglepackage #yuminstallvimX11 GroupInstall: #yumgroupinstallWebServer Remove: removesinglepackage #yumremovevimX11 GroupRemove: #yumgroupremoveWebServer QueryPackages Packageusage: #yuminfopackagename SearchingFiles: #yumwhatprovidesfilename DNSServerConfiguration PrimaryDNSServer

Serverside Step1: #yuminstallbindbindchrootbindutils Step2: creatednsconfigurationfilein/var/named/chroot #vim/var/named/chroot/etc/named.conf optional{ directory/var/named; }; zoneleena.com{ typemaster; fileleena.com.db; }; zone0.168.192.inaddr.arpa{ typemaster; file192.168.0.db; }; Step3: checkSyntaxofconfigurationfile #namedcheckconft/var/named/chroot Step4: createzoneforwardlookupzonefileunder/var/named/chroot #vim/var/named/chroot/var/named/leena.com.db $TTL86400 @INSOAsystem1.leena.com.root@system1.leena.com.( 1;serialno 10M;slaverefreshinterval 10M;slaveretryinterval 1W;expireinterval 1D);Minimumttl @INNSsystem1.leena.com. @INA192.168.0.10 system1IN A sys1 IN A sys2 IN A 192.168.0.10 192.168.0.1 192.168.0.2

Step5: checksyntaxofforwardlookupzonefile #namedcheckzoneleena.com./var/named/chroot/var/named/leena.com.db Step6: createzonereverselookupzonefileunder/var/named/chroot #vim/var/named/chroot/var/named/leena.com.db $TTL86400 0.168.192.INADDR.ARPA.INSOAsystem1.leena.com. root@system1.leena.com.( 1;serialno 10M;slaverefreshinterval 10M;slaveretryinterval 1W;expireinterval 1D);Minimumttl @INNSsystem1.leena.com. 10.0.168.192.INADDR.ARPA.INPTRsystem1.leena.com. 1IN PTR sys1.leena.com. 2IN PTR sys2.leena.com. Step7: checksyntaxofreverselookupzonefile #namedcheckzoneleena.com./var/named/chroot/var/named/192.168.0.db Step8: adddnsserverentryin/etc/resolv.conf searchleena.com nameserver192.168.0.10 Step9: startthenamedserviceandloadrecords #chkconfignamedon #servicenamedstart #rndcreload Step10: checkthednsresolvation #nslookupleena.com;nslookup192.168.0.10 ClientSide: Step1: adddnsserverentryin/etc/resolv.conf searchleena.com nameserver192.168.0.10 Step2: checkthednsresolvation #nslookupleena.com;nslookup192.168.0.10

 SecondaryDNSServer System2 Step1: #yuminstallbindbindchrootbindutils Step2: creatednsconfigurationfilein/var/named/chroot #vim/var/named/chroot/etc/named.conf optional{ directory/var/named; }; zoneleena.com{ typeslave; masters{192.168.0.10;}; fileslaves/leena.com.db; }; Step3: checkSyntaxofconfigurationfile #namedcheckconft/var/named/chroot System1 Step4: addtheslaveserverentryinmasterdnsserver #vim/var/named/chroot/var/named/leena.com.db $TTL86400 @INSOAsystem1.leena.com.root@system1.leena.com.( 1;serialno 10M;slaverefreshinterval 10M;slaveretryinterval 1W;expireinterval 1D);Minimumttl @INNSsystem1.leena.com. @INA192.168.0.10 @INNSsystem2.leena.com. system2INA192.168.0.20 system1IN A 192.168.0.10 sys1 IN A 192.168.0.1 sys2 IN A 192.168.0.2 Step5: checksyntaxofforwardlookupzonefile #namedcheckzoneleena.com./var/named/chroot/var/named/leena.com.db Step6: startthenamedserviceandloadrecords #servicenamedrestart #rndcreload system2: Step7: adddnsserverentryin/etc/resolv.conf searchleena.com nameserver192.168.0.20 Step8: startthenamedserviceandloadrecords #chkconfignamedon #servicenamedstart #rndcreload Step9: checkthednsresolvation

#nslookupleena.com ClientSide: Step10: adddnsserverentryin/etc/resolv.conf searchleena.com nameserver192.168.0.20 Step11: checkthednsresolvation #nslookupleena.com #nslookup192.168.0.20 ForwardDNSServer system3: #yuminstallbindbindchrootbindutils Step1: creatednsconfigurationfilein/var/named/chroot #vim/var/named/chroot/etc/named.conf optional{ directory/var/named; }; zoneleena.com{ typeforward; forwarders{192.168.0.10;}; }; Step2: checkSyntaxofconfigurationfileandstarttheservice #namedcheckconft/var/named/chroot #chkconfignamedon #servicenamedrestart;rndcreload allowquery: FromMasterorSlaveDNStoClientforresolvation system1: allowsys2toresolvednsentries Step1: #vim/var/named/chroot/etc/named.conf aclfriend{192.168.0.1;}; options{ directory/var/named; }; zoneleena.com{ typemaster; fileleena.com.db; allowquery{friend;}; }; Step2: restarttheserviceandchecktheresolvation #servicenamedrestart #rndcreload allowtransfer: FromMastertoSlaveDNStotransferzoneentries system1: allowsystem2totransferzoneentries Step1: #vim/var/named/chroot/etc/named.conf AccessControllistInDNS

aclslaveserver{192.168.0.20;}; options{ directory/var/named; }; zoneleena.com{ typemaster; fileleena.com.db; allowtransfer{slaveserver;}; }; Step2: restarttheserviceandchecktheresolvation #servicenamedrestart #rndcreload allowrecursion: Fromforwarddnsservertoclientforresolvation system3: allowsystem2totransferzoneentries Step1: #vim/var/named/chroot/etc/named.conf aclclient{192.168.0.3;}; options{ directory/var/named; }; zoneleena.com{ typeforward; forwarders{192.168.0.10;}; allowrecursion{client;}; }; Step2: restarttheserviceandchecktheresolvation #servicenamedrestart #rndcreload DHCP system1: Step1: installdhcppackage #yuminstalldhcp Step2: copysampleconfigurationfileto/etc/dhcpd.conf #cp/usr/share/doc/dhcp3.0.5/dhcpd.conf.sample/etc/dhcpd.conf Step3: editdhcpconfigurationfile #vim/etc/dhcpd.conf ddnsupdatestylenone; subnet192.168.0.0netmask255.255.255.0{ optionrouters192.168.0.10; optionsubnetmask255.255.255.0; optiondomainname"leena.com"; optiondomainnameservers192.168.0.10; defaultleasetime21600; maxleasetime43200; range192.168.0.1192.168.0.20; # hoststation1{ # hardwareethernet00:a0:cc:3c:80:c5; # fixedaddress192.168.0.1;

# } } Step4: startdhcpservice #chkconfigdhcpdon #servicedhcpdstart ClientSide: Step5: enabledhcpinclientside #neattui #servicenetworkrestart Step6: checktheipaddressofmachine #ifconfig DynamicDNS system1: Step1: generatednssecuritykey #dnsseckeygenahmacmd5b512nHOST/root/sample itcreatestwofilestheyare K%2Froot%2Fdns%2Fsample.+157+34209.key K%2Froot%2Fdns%2Fsample.+157+34209.private insertkeyinnamed.conffile #catK%2Froot%2Fdns%2Fsample.+157+34209.private>> /var/named/chroot/etc/named.conf Beforechanging: Step2: #vim/var/named/chroot/etc/named.conf options{ directory/var/named; }; zoneleena.com{ typemaster; fileleena.com.db; }; Privatekeyformat:v1.2 Algorithm:157(HMAC_MD5) Key:kvoh9N29HICRNt6awesddKFH4x3aczaEgT Afterchanging: #vim/var/named/chroot/etc/named.conf keysample{ algorithmhmacmd5; secret kvoh9N29HICRNt6awesddKFH4x3aczaEgT }; options{ directory/var/named; }; zoneleena.com{ typemaster; fileslaves/leena.com.db; allowupdate{any;}; };

Step3: Addkeyindhcpd.conffile #vim/etc/dhcpd.conf ddnsupdatestylenone; keysample{ algorithmhmacmd5; secretkvoh9N29HICRNt6awesddKFH4x3aczaEgT }; subnet192.168.0.0netmask255.255.255.0{ optionrouters192.168.0.10; optionsubnetmask255.255.255.0; optiondomainname"leena.com"; optiondomainnameservers192.168.0.10; defaultleasetime21600; maxleasetime43200; range192.168.0.1192.168.0.20; # hoststation1{ # hardwareethernet00:a0:cc:3c:80:c5; # fixedaddress192.168.0.1; # } } Step4: startdhcpandnamedservice #servicenamedrestart #rndcreload #servicedhcpdrestart ClientSide: Step5: Editdhclienteth0.conf #vim/etc/dhclienteth0.conf sendhostnamesys11; Step6: enabledhcpinclientside #neattui #servicenetworkrestart Step7: checktheipaddressofmachine DHCPReservation Clientside: CheckthemacaddressofEthernetcard #ifconfigeth0 system1: Step1: installdhcppackage #yuminstalldhcp Step2: copysampleconfigurationfileto/etc/dhcpd.conf #cp/usr/share/doc/dhcp3.0.5/dhcpd.conf.sample/etc/dhcpd.conf Step3: editdhcpconfigurationfile #vim/etc/dhcpd.conf ddnsupdatestylenone; subnet192.168.0.0netmask255.255.255.0{ optionrouters192.168.0.10;

optionsubnetmask255.255.255.0; optiondomainname"leena.com"; optiondomainnameservers192.168.0.10; defaultleasetime21600; maxleasetime43200; range192.168.0.1192.168.0.20; hostsys11{ #entertheclientmachinemacaddressex.00.a0.cc.3c.80.c5 hardwareethernet00:a0:cc:3c:80:c5; fixedaddress192.168.0.11; } } Step4: startdhcpservice #chkconfigdhcpdon;servicedhcpdstart Sys11: Step5: enabledhcpinclientside #neattui #servicenetworkrestart Step6: checktheipaddressofmachine DHCPRelayServer System1: Step1: installdhcppackage #yuminstalldhcp Step2: copysampleconfigurationfileto/etc/dhcpd.conf #cp/usr/share/doc/dhcp3.0.5/dhcpd.conf.sample/etc/dhcpd.conf Step3: editdhcpconfigurationfile #vim/etc/dhcpd.conf ddnsupdatestylenone; sharednetworksample{ optionrouters192.168.0.10; optionsubnetmask255.255.255.0; optiondomainname"leena.com"; optiondomainnameservers192.168.0.10; defaultleasetime21600; maxleasetime43200; subnet192.168.0.0netmask255.255.255.0{range192.168.0.1 192.168.0.20;} subnet10.0.0.0netmask255.0.0.0{range10.0.0.110.0.0.20;} } Step4: CreatealiasEthernetdeviceandassignip10.0.0.10 #yuminstallnetconfig #netconfigdeth0:1 #servicenetworkrestart Step5: startdhcpservice #chkconfigdhcpdon #servicedhcpdstart

ClientSide: Step6: enabledhcpinclientside #neattui #servicenetworkrestart Step7: checktheipaddressofmachine Apacheconfiguration system1: Step1: Configuredns Step2: Installhttppackages #yuminstallhttpd Step3: Createhtmlfile #vim/var/www/html/main.html <html> <head><title>SampleWebPage</title></head> <body> <fontsize=40color=FF0000> <marquee>ThisisHomePageofLeena.com</marquee> </font></body></html> Step4: Addhtmlpagetohttpconfigurationfile #vim/etc/httpd/conf/httpd.conf Lineno:390 DirectoryIndexmain.htmlindex.htmlindex.html.var Step5: restartthehttpservice #chkconfighttpdon #servicehttpdrestart sys1: adddnsentriesin/etc/resolv.conf #vim/etc/resolv.conf searchleena.com nameserver192.168.0.10 Step6: openfirefoxandtypethefollowingurlinaddressbar http://system1.leena.com ApacheAuthentication system1: Step1: Configuredns Step2: Installhttppackages #yuminstallhttpd Step3: Createhtmlfile #vim/var/www/html/main.html <html> <head><title>SampleWebPage</title></head> <body> <fontsize=40color=FF0000>

<marquee>ThisisHomePageofLeena.com</marquee> </font></body></html> Step4: Addhtmlpagetohttpconfigurationfile #vim/etc/httpd/conf/httpd.conf Lineno:326 AllowOverrideAuthConfig Lineno:390 DirectoryIndexmain.htmlindex.htmlindex.html.var Step5: create.htaccessfileindocumentrootofwebpage #vim/var/www/html/.htaccess AuthNameRestrictedWebSite AuthTypeBasic AuthUserFile/etc/httpd/conf/.htpasswdsystem1 requirevailduser Step6: changegroupandpermissionsofthefile #chgrpapache/var/www/html/.htaccess #chmod640/var/www/html/.htaccess Step7: create.htpasswdfile #htpasswdmc/etc/httpd/conf/.htpasswdsystem1user1 #htpasswdm/etc/httpd/conf/.htpasswdsystem1user2 Step8: restartthehttpservice #chkconfighttpdon #servicehttpdrestart sys1: Step9: adddnsentriesin/etc/resolv.conff #vim/etc/resolv.conf Step10: openfirefoxandtypethefollowingurlinaddressbar http://system1.leena.com System1: Step1: installmod_sslandhttpdpackage #yuminstallhttpdmod_ssl Step3: Createhtmlfile #vim/var/www/html/main.html <html> <head><title>SampleWebPage</title></head> <body> <fontsize=40color=FF0000> <marquee>ThisisHomePageofLeena.com</marquee> </font></body></html> Step4: Addhtmlpagetohttpconfigurationfile #vim/etc/httpd/conf/httpd.conf Lineno:390 DirectoryIndexmain.htmlindex.htmlindex.html.var Lineno:lastline ApacheEncryptedWebServer

SSLEngineon SSLCertificateFile/etc/pki/tls/certs/localhost.crt SSLCertificateKeyFile/etc/pki/tls/private/localhost.key thesethreeentriesarespecifiedin/etc/httpd/conf.d/ssl.conf Lineno:95 Lineno:112 Lineno:119 Step5: restartthehttpservice #chkconfighttpdon #servicehttpdrestart sys1: adddnsentriesin/etc/resolv.conf #vim/etc/resolv.conf searchleena.com nameserver192.168.0.10 Step10: openfirefoxandtypethefollowingurlinaddressbar http://system1.leena.com theerroroccursthentypetheurl #https://system1.leena.com Apachevirtualhostingconfiguration Hostbasedvirtualhosting: system1: Step1: addhosttheentriesindns #cat>>/var/named/chroot/var/named/leena.com.db wwwINCNAMEsystem1.leena.com mailINCNAMEsystem1.leena.com <control+d> reloadthednsentries #rndcreload Step2: Installhttppackages #yuminstallhttpd Step3: Createhtmlfiles #vim/var/www/html/main.html <html> <head><title>SampleWebPage</title></head> <body><fontsize=40color=FF0000> <marquee>ThisisHomePageofLeena.com</marquee> </font></body></html> #mkdir/var/www/mail #vim/var/www/mail/mail.html <html> <head><title>SampleWebPage</title></head> <body><fontsize=40color=00FF00> <marquee>WelcomeMailPageofLeena.com</marquee> </font></body></html> Step4: Addhtmlpagetohttpconfigurationfile #vim/etc/httpd/conf/httpd.conf

Lineno:390 DirectoryIndexmail.htmlmain.htmlindex.htmlindex.html.var Lineno:998orLast NameVirtualHost192.168.0.10:80 <VirtualHost192.168.0.10:80> Servernamewww.leena.com. DocumentRoot/var/www/html </VirtualHost> <VirtualHost192.168.0.10:80> Servernamemail.leena.com. DocumentRoot/var/www/mail </VirtualHost> Step5: restartthehttpservice #servicehttpdrestart sys1: adddnsentriesin/etc/resolv.conf #vim/etc/resolv.conf searchleena.com nameserver192.168.0.10 Step6: openfirefoxandtypethefollowingurlinaddressbar http://www.leena.com http://mail.leena.com IPbasedvirtualhosting: system1: Step1: createethernetaliasipaddressis10.0.0.10 #netconfigdeth0:1 #servicenetworkrestart addhosttheentriesindns #cat>>/var/named/chroot/var/named/leena.com.db songsINA10.0.0.10 <control+d> reloadthednsentries #rndcreload Step2: Installhttppackages #yuminstallhttpd Step3: Createhtmlfiles #mkdir/var/www/songs #vim/var/www/mail/songs.html <html> <head><title>SampleWebPage</title></head> <body><fontsize=40color=0000FF> <marquee>WelcometoSongsPageofLeena.com</marquee> </font></body></html> Step4: Addhtmlpagetohttpconfigurationfile #vim/etc/httpd/conf/httpd.conf Lineno:390 DirectoryIndexsongs.htmlmail.htmlmain.htmlindex.html Lineno:998orLast

NameVirtualHost192.168.0.10:80 <VirtualHost192.168.0.10:80> Servernamewww.leena.com. DocumentRoot/var/www/html </VirtualHost> <VirtualHost192.168.0.10:80> Servernamemail.leena.com. DocumentRoot/var/www/mail </VirtualHost> NameVirtualHost10.0.0.10:80 <VirtualHost10.0.0.10:80> Servernamesongs.leena.com. DocumentRoot/var/www/songs </VirtualHost> Step5: restartthehttpservice #servicehttpdrestart sys1: adddnsentriesin/etc/resolv.conff #vim/etc/resolv.conf Step6: openfirefoxandtypethefollowingurlinaddressbar http://www.leena.com http://mail.leena.com http://songs.leena.com ApacheCGIScripts system1: Step1: enablethecgibinentriesinhttpd.conffile #vim/etc/httpd/conf/httpd.conf Lineno:563 ScriptAlias/cgibin//var/www/cgibin Step2: createcgibinscript #vim/var/www/cgibin/sample.sh #!/bin/bash echoContentType:text/html echo echo<pre> echoMyUsernameis whoami echo echoMyidis id echo echoMyshellsettingsare set echo echo</pre> Step3: changepermissionsofthecgiscript #chmod777/var/www/cgibin/sample.sh restartthehttpservice #servicehttpdrestart

sys1: Step4: openfirefoxandtypethefollowinglineinaddressbar http://system1.leena.com/cgibin/sample.sh SquidProxyServer System1: Step1: install,configureandstartthehttpdservice installsquidpackages #yuminstallsquid Step2: editsquid.conffile #vim/etc/squid/squid.conf Lineno:73 http_port1324 Lineno:2395addthefollowingentries aclsamplesrc192.168.0.1 aclenemysrc192.168.0.11 Lineno:2505addtheentries http_accessallowsample http_accessdenyenemy Step3: startthesquidservice #chkconfigsquidon #servicesquidstart sys1: Step4: openfirefoxclickedit>preferences>connectionsettings choosemanualproxyconfiguration httpproxy:192.168.0.10port:1324 clickokandtypetheurlinaddressbar http://system1.leena.com. sys11 Step5: openfirefoxclickedit>preferences>connectionsettings choosemanualproxyconfiguration httpproxy:192.168.0.10port:1324 clickokandtypetheurlinaddressbar http://system1.leena.com. MailServer Serverside: System4: Step1: installandconfiguredns #yuminstallbindbindchrootbindutils Step2: creatednsconfigurationfilein/var/named/chroot #vim/var/named/chroot/etc/named.conf optional{ directory/var/named; }; zonepriya.com{ typemaster; filepriya.com.db;

}; Step3: createzoneforwardlookupzonefileunder/var/named/chrootandadd MX recordinthiszone #vim/var/named/chroot/var/named/leena.com.db $TTL86400 @INSOAsystem4.priya.com.root@system4.priya.com.( 1;serialno 10M;slaverefresh 10M;slaveretryinterval 1W;expireinterval 1D);Minimumttl @INNSsystem4.priya.com. @INMX10system4.priya.com @INA192.168.0.40 system4IN A sys4 IN A sys44 IN A 192.168.0.40 192.168.0.4 192.168.0.44

Step4: adddnsserverentryin/etc/resolv.conf searchpriya.com nameserver192.168.0.40 Step5: startthenamedserviceandloadrecords #chkconfignamedon #servicenamedstart #rndcreload Step6: checkthednsresolvation #nslookuppriya.com #nslookup192.168.0.40 #hosttMXpriya.com SendmailServer System4: Step1: installpackages #yuminstallsendmailsendmailcfsendmaildoc Step2: editconfigurationfile #vim/etc/mail/sendmail.mc Lineno:116(disabletheline)thatis dnl#DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1,Name=MTA)dnl Lineno:160 MASQUERADE_AS(`priya.com) Lineno:164 FEATURE(masquerade_envelope)dnl Lineno:168 FEATURE(masquerade_entire_domain)dnl #vim/etc/mail/localhostnames priya.com system4.priya.com

system4 Step3: restartthesendmailservice #chkconfigsendmailon #servicesendmailrestart Step4: sendmailtouser #mailvstestpriya@priya.com samplemail . cc: InboundMail(TochangetheToaddressforsending) System4: Step1: #vim/etc/mail/sendmail.mc Lineno:79 FEATURE(`virtusertable',`hasho/etc/mail/virtusertable.db')dnl Step2: editvirtusertablefile #vim/etc/mail/virtusertable user1@priya.com priya@priya.com Step3: restartthesendmailservice #servicesendmailrestart Step4: #mailstestvuser1@priya.com samplemailforvirtualusertable . cc: Step5: #suuser1 $mail $exit #supriya $mail OutboundMail(TochangetheFromaddressforsending) System4: Step1: addthefollowingentriesinsendmail.mcfile #vim/etc/mail/sendmail.mc Lineno:104 FEATURE(genericstable)dnl FEATURE(`always_add_domain')dnl GENERICS_DOMAIN_FILE(`/etc/mail/localhostnames')dnl Step2: #hostnamesystem4.priya.com editgenericstablefile #vim/etc/mail/genericstable user1@system4.priya.com priya@system4.priya.com Step3: addthehostnameentriesinlocalhostnamesfile #vim/etc/mail/localhostnames

priya.com system4.priya.com system4 Step4: restartthesendmailservice #servicesendmailrestart Step5: Fromuser1tosendamailtoanotheruser $mailstestvroot@priya.com samplemailforgenericsusertable . cc: Step6: checkrootmails #mail SMTPRestrictions Step1: editsendmail.mcfile #vim/etc/mail/sendmail.mc Lineno:102 FEATURE(`blacklist_recipients')dnl Step2: addentriesinaccessfile #vim/etc/mail/access Lineno:last From:root@sys4.priya.com REJECT To:root@sys4.priya.com OK Connect:sys44 OK Step3: restartthesendmailservice #servicesendmailrestart sys4: Step4: adddnsentry #vim/etc/resolv.conf searchpriya.com nameserver192.168.0.40 Step5: testtherestrictionsfromsys4 #echotestemail|mailssamplevroot@priya.com theemailwillnotsend PostfixServer Step1: installpostfixpackages #yuminstallpostfix switchthepostfixmtaformail #alternativesconfigmta selectpostfixandstoptheservice #servicesendmailstop Step2: editpostfixconfigurationfile #vim/etc/postfix/main.cf Lineno:69

myhostname=station4.priya.com Lineno:77 mydomain=priya.com Lineno:93 myorigin=$mydomain Lineno: mydestination=$myhostname,localhost.$mydomain,localhost,$mydomain Lineno:last masquerade_exceptions=root Step3: Restartthepostfixservice #chkconfigpostfixon #servicepostfixrestart #netstattulpn|grepmaster Step4: Sendemailtouser #mailvman@priya.com Subject:testemail Samplemailfromuserroot . Cc: Step5: Loginasmanchecktheemail #suman $mail InboundMail Step1: Edittheconfigurationfile #vim/etc/postfix/main.cf Lineno:last virtual_alias_maps=hash:/etc/postfix/virtual Step2: Editvirtualfile #vim/etc/postfix/virtual Lineno:last man@priya.com san@priya.com Step3: Restartthepostfixandreloadvirtualfile #servicepostfixrestart #postmap/etc/postfix/virtual Step4: Sendemailtomanuserthatemailissendtosanuser #echovirtualusertablemailtesting|mailstest man@priya.com Step5: Loginassanandcheckmail #susan $mail OutboundMail Step1: Edittheconfigurationfile #vim/etc/postfix/main.cf Lineno:last smtp_generic_maps=hash:/etc/postfix/generic

Step2: Editvirtualfile #vim/etc/postfix/generic Lineno:last root@leena.comsan@priya.com Step3: Restartthepostfixandreloadvirtualfile #servicepostfixrestart #postmap/etc/postfix/generic Step4: Addtheleena.comdnsentriesinSystem4 #vim/etc/resolv.conf searchpriya.comleena.com nameserver192.168.0.40 nameserver192.168.0.10 System1: Addthepriya.comdnsentriesinSystem1 #vim/etc/resolv.conf searchpriya.comleena.com nameserver192.168.0.10 nameserver192.168.0.40 Sendemailfromleena.comthatissystem1userisroot #echomailfromroot@leena.com|mailstestroot@priya.com System4: Step5: Loginasrootfromsystem4andcheckthemail #mail Postfixsmtprestariction Step1: editthemain.cffile #vim/etc/postfix/main.cf Lineno:Last smtpd_client_restrictions=check_client_access hash:/etc/postfix/access Step2: edittheaccessfile #vim/etc/postfix/access Lineno:Last 192.168.0.4 REJECT Step3: restartthepostfixserviceandreloadtheaccessfile #postmap/etc/postfix/access #servicepostfixrestart sys4: Step4: sendmailtosystem4 #mailssamplev root@priya.com sampleemailforaccesstesting cc: Step5: theemailisreturnedtothesender checkthemailforrootuserfromsys4 Step1: ProcmailConfiguration

installandconfiguresendmailorpostfixandinstallprocmail #yuminstallprocmail Step2: edittheprocmailconfigurationfile #vim/etc/procmailrc LOGFILE=/var/spoll/mail/procmail.log VERBOSE=yes :0c *^Subject.*rhce /var/spool/mail/procmail.test #whichprocmail #chmodg+s/usr/bin/procmail Step3: Postfixprocmailconfiguration #vim/etc/postfix/main.cf mailbox_command=/usr/bin/procmaill (or) Sendmailprocmailconfiguration #vim/etc/mail/sendmail.mc Lineno:175 MAILER(procmail)dnl Step4: restartthesendmailorpostfixservice #servicesendmailrestart(or) #servicepostfixrestart Step5: createaemptyfileandchangethepermission #touch/var/spool/mail/procmail.test #chgrpmail/var/spool/mail/procmail.test #chown770/var/spool/mail/procmail.test Step6: sendemailtoanyusersubjectisrhce #mailvpriya@priya.com Subject:rhce sampleemailforprocmailtesting cc: Step6: checktheemailformanuser #suman $muttf/var/spool/mail/procmail.test Dovecotconfiguration Dovecotisusedforimapandpop3configuration Step1: installandconfiguresendmailorpostfix Step2: installthedovecot #yuminstalldovecot Step3: editthedovecot.conffile #vim/etc/dovecot.conf enablethefollowinglines Lineno:17 protocols=imapimapspop3pop3s Lineno:87 ssl_cert_file=/etc/pki/dovecot/certs/dovecot.pem

Lineno:88 ssl_key_file=/etc/pki/dovecot/private/dovecot.pem

Step4: restartthesendmailorpostfixanddovecot #servicepostfixrestart #chkconfigdovecoton #servicedovecotrestart #netstattulpn|grepdovecot Sys4: Step5: #muttfimap://man@priya.com #muttfimaps://man@priya.com #muttfpop://man@priya.com #muttfpops://man@priya.com Graphicalmailclientconfiguraion Usingtheevolutionorthunderbird sys4: Step1: installthethunderbirdpackage mountthepackagelocationfromserver #mount192.168.0.254:/Client/Client//mnt #rpmivhthunderbird1.5.0.96.el5.i386.rpmnodeps Step2: #thunderbird(or) Applications>Internet>Thunderbird Step3: configurationinthunderbird clickemailaccount>yourname:newemailaddress:new@priya.com selectimaporpop3andenterthefollowingdetails>next incomingserver:priya.com outgoingserver:priya.com Incomingusername:new Accountname:new@priya.com clicknext>finish enterthepasswordfornew checktheemailfornewuser Spammail system4: Step1: installspampackages #yuminstallspamassassin Step2: restartthespamservice #chkconfigspamassassinon #servicespamassassinrestart sys4: Step3: installandconfiguresendmailorpostfixandthunderbirdor evolution Step4: addspamfiltersinthunderbird ToolsMessageFiltersFiltername:filter1 Subjectcontains:hai Movemessageto:junkonnew@priya.com

clickok step5: #mailvnew@priya.com Subject:hai samplemail cc: thisisemailismovedjunkfolderforusernew SquirrelMailConfiguration Squirrelmailisawebmailclient System4: Step1: installandconfigurethedns,sendmailorpostfix,dovecot,http and php #yuminstallpostfixdovecothttpphp*bind* configurethedns,postfix,httpanddovecot Step2: restartthedns,postfix,httpanddovecot #servicenamedrestart #rndcreload addthednsentriesin/etc/resolv.conf #servicehttpdrestart #servicepostfixrestart #servicedovecotrestart Step3: installthesquirrelpackage #chkconfigsquirrelmailon #yuminstallsquirrelmail Step4: runthescriptfile #/usr/share/squirrelmail/config/conf.pl SquirrelMailConfiguration:Read:config.php(1.4.0) MainMenu 1.OrganizationPreferences 2.ServerSettings 3.FolderDefaults 4.GeneralOptions 5.Themes 6.AddressBooks 7.MessageoftheDay(MOTD) 8.Plugins 9.Database 10.Languages D.SetpredefinedsettingsforspecificIMAPservers CTurncoloroff SSavedata QQuit Command>>2 SquirrelMailConfiguration:Read:config.php(1.4.0) ServerSettings General

1.Domain:localhost 2.InvertTime:false 3.SendmailorSMTP:Sendmail A.UpdateIMAPSettings::143(uw) B.ChangeSendmailConfig:/usr/sbin/sendmail RReturntoMainMenu CTurncoloroff SSavedata QQuit Command>>A SquirrelMailConfiguration:Read:config.php(1.4.0) ServerSettings General 1.Domain:localhost 2.InvertTime:false 3.SendmailorSMTP:Sendmail IMAPSettings 4.IMAPServer: 5.IMAPPort:143 6.Authenticationtype:login 7.SecureIMAP(TLS):false 8.Serversoftware:uw 9.Delimiter:/ B.ChangeSendmailConfig:/usr/sbin/sendmail H.HideIMAPServerSettings RReturntoMainMenu CTurncoloroff SSavedata QQuit Command>>4 ThisisthehostnamewhereyourIMAPservercanbecontacted. []:priya.com SquirrelMailConfiguration:Read:config.php(1.4.0) ServerSettings General 1.Domain:localhost 2.InvertTime:false 3.SendmailorSMTP:Sendmail IMAPSettings 4.IMAPServer:priya.com 5.IMAPPort:143 6.Authenticationtype:login

7.SecureIMAP(TLS):false 8.Serversoftware:uw 9.Delimiter:/ B.ChangeSendmailConfig:/usr/sbin/sendmail H.HideIMAPServerSettings RReturntoMainMenu CTurncoloroff SSavedata QQuit Command>>s Datasavedinconfig.php Pressentertocontinue... SquirrelMailConfiguration:Read:config.php(1.4.0) ServerSettings General 1.Domain:localhost 2.InvertTime:false 3.SendmailorSMTP:Sendmail IMAPSettings 4.IMAPServer:priya.com 5.IMAPPort:143 6.Authenticationtype:login 7.SecureIMAP(TLS):false 8.Serversoftware:uw 9.Delimiter:/ B.ChangeSendmailConfig:/usr/sbin/sendmail H.HideIMAPServerSettings RReturntoMainMenu CTurncoloroff SSavedata QQuit Command>>q Exitingconf.pl. Youmightwanttotestyourconfigurationbybrowsingto http://yoursquirrelmaillocation/src/configtest.php HappySquirrelMailing! Step5: createasoftlinkinhtmldirectory #lns/usr/share/squirrelmail//var/www/html/webmail restartthehttpservice #servicehttpdrestart Sys4 Step6: openthefirefoxandtypethefollowinglineinaddressbar http://priya.com/webmail Username: Password: NFSServerconfiguration system2: Step1:

installnfspackages #yuminstallnfsutils Step2: editexportsfileToshareafolderex:/share #vim/etc/exports /share *(rw) Step3: restartthenfsservice #chkconfignfson #servicenfsrestart sys2: Step4: listservershares #showmounte192.168.0.20 Step5: mountthesharefolderinlocal #mount192.168.0.20:/share/mnt Ftpserverconfiguration Server1(ip192.168.0.254) Step1: installftppackage #yuminstallvsftpd Step2: restarttheservice #chkconfigvsftpdon #servicevsftpdrestart ClientSide Step3: Userlogin [root@sys5~]#lftpupriya192.168.0.254 Password: lftppriya@192.168.0.254:~>ls drwxrxrx2202320231024Aug1207:02Desktop drwxrxrx2001024Sep3009:58dir1 rwrr1000Sep3009:58priya1 rwrr1000Sep3009:58priya2 lftppriya@192.168.0.254:~>getpriya1 lftppriya@192.168.0.254:~>!ls anacondaks.cfgDesktopinstall.logpriya1 xorg.conf lftppriya@192.168.0.254:~>putanacondaks.cfg 976bytestransferred lftppriya@192.168.0.254:~>ls drwxrxrx2202320231024Aug1207:02Desktop rwrr120232023976Sep3010:10anaconda ks.cfg drwxrxrx2001024Sep3009:58dir1 rwrr1000Sep3009:58priya1 rwrr1000Sep3009:58priya2 lftppriya@192.168.0.254:~>mgetddir1/* Total2filestransferred lftppriya@192.168.0.254:~>!ls anacondaks.cfgdir1install.logpriya1 lftppriya@192.168.0.254:~>quit Guestlogin [root@sys5~]#lftp192.168.0.254

lftp192.168.0.254:~>ls drwxrxrx15004096Sep2411:13pub lftp192.168.0.254:/>quit Denyusersloginviatheftp Server: Step1: edittheconfigurationfile #vim/etc/vsftpd/vsftpd.conf Lineno:115 userlist_enable=YES Step2: addtheuserentryinuser_listfile #vim/etc/vsftpd/user_list priya Step3: restarttheftpservice #servicevsftpdrestart Client Step4: root@sys5~]#lftpupriya192.168.0.254 lftppriya@192.168.0.254:~>ls Loginfailed lftppriya@192.168.0.254:/>quit Denyusersloginviatheftp Server: Step1: addtheuserentryinftpusersfile #vim/etc/vsftpd/ftpusers priya Step2: restarttheftpservice #servicevsftpdrestart Client Step3: root@sys5~]#lftpupriya192.168.0.254 lftppriya@192.168.0.254:~>ls Loginfailed lftppriya@192.168.0.254:/>quit SambaServerConfiguration StandaloneServer Serverside: Step1: installsambapackages #yuminstallsambasambacommonsambaclient Step2: editsmb.confconfigurationfile #vim/etc/samba/smb.conf Lineno:26 workgroup=MAN Lineno:29 serverstring=SambaServersystem4 Lineno:34 security=user

Lineno:105 localmaster=yes Lineno:273(addthesharedirectory) [sharedir] comment=sampleshare path=/sample public=yes writable=yes printable=yes Step3: checkthesystaxofconfigurationandtesttheserverrole #testparm Step4: addtheusersinsamba #smbpasswda NewSMBpassword: RetypenewSMBpassword: Addeduserroot. #smbpasswdapriya NewSMBpassword: RetypenewSMBpassword: Addeduserpriya. Theseusersaddedin/etc/samba/smbpasswdfile Step5: restartthesambaservice #chkconfigsmbon;servicesmbrestart ToaccessthelinuxfilesinWindows Step1: windowsworkgroupispriya startrun\\system4\user1 User:user1 Password:****** ToaccessthewindowsfilesinLinux Graphical: PlacesNetworkServersWindowsNetWorkPriyaPc6 Username:administrator Password:******** CommandLine: Step1: Listtheshareddirectories #smbtreea Password:[Enter] PRIYA \\PC6 \\PC6\C$Defaultshare \\PC6\SYSVOLLogonservershare \\PC6\ADMIN$RemoteAdmin \\PC6\NETLOGONLogonservershare \\PC6\c \\PC6\IPC$RemoteIPC MYGROUP \\SYSTEM4SambaServer \\SYSTEM4\rootHomeDirectories \\SYSTEM4\IPC$IPCService(SambaServer)

Step2: accessthewindowsfiles #smbclient//192.168.0.2/cUadministrator Password:<administratorpasswd> Domain=[PRIYA]OS=[WindowsServer20033790]Server=[WindowsServer 20035.2] smb:\>ls AUTOEXEC.BATA0ThuAug719:07:272008 boot.iniAHS192ThuAug719:03:112008 CONFIG.SYSA0ThuAug719:07:272008 DocumentsandSettingsD0ThuAug719:16:082008 IntelD0ThuAug719:17:112008 IO.SYSAHSR0ThuAug719:07:2720 08 MSDOS.SYSAHSR0ThuAug719:07:272008 NTDETECT.COMAHSR47548ThuApr317:30:002003 ntldrAHSR277152ThuApr317:30:002003 pagefile.sysAHS1598029824TueSep3011:49:562008 ProgramFilesDR0ThuSep410:59:152008 RECYCLERDHS0SunAug1000:21:562008 SystemVolumeInformationDHS0TueSep3011:49:582008 TempEI4D0FriAug812:39:172008 WINDOWSD0FriSep1910:31:462008 wmpubD0ThuAug719:07:492008 40005blocksofsize262144.24428blocksavailable smb:\>quit MounttheWindowsDirectory Step1: TemporaryMount: #mount//192.168.0.2/c/mnt/ouser=administrator Password:<adminpassword> PermanentMount: #vim/etc/fstab Lineno:last //192.168.0.2/c/mnt/ext3defaults,user=administrator%Plx123400 #mounta LinuxPrimaryDomainController System4: Step1: installandconfiguredns installsambapackages #yuminstallsambasambacommonsambaclient Step2: editthesmb.conffile [global] workgroup=linux.com netbiosname=linux passwdbbackend=tdbsam security=user oslevel=35 domainmaster=yes preferredmaster=yes domainlogons=yes logondrive=c:

adduserscript=/usr/sbin/useradd%U addgroupscript=/usr/sbin/groupadd%g addmachinescript=/usr/bin/adduserngmachinescMachined /dev/null/s/bin/false%U deleteuserfromgroupscript=/usr/sbin/deluser%U%g deletegroupscript=/usr/sbin/groupdel%g [homes] Comment=homedirectories validusers=%S readonly=no [netlogon] Comment=NetworkLogonService path=/usr/local/samba/lib/netlogon browsable=no readonly=no sharemodes=no [Profiles] path=/usr/local/samba/profiles browseable=no guestok=yes readonly=no profileacls=yes Step3: createadirectory #mkdirp/usr/local/samba/profiles/user1 #chmodR777/usr/local/samba Step4: createamembermachineentryindnsandcheckconnectivity Step5: addmacineaccountandgroup #groupaddrtrust #useraddrgtrustd/dev/nulls/dev/nullpc6$ #smbpasswdampc6 Step6: adduseraccountsandassignpassword #useraddtest;passwdtest #useraddsan;passwdsan #smbpasswdasan #smbpasswdatest Step7: changetheselinuxrules #systemconfigselinux& selectsambaandenabletheallowpolicies. #testparm #chkconfigsmbon;servicesmbrestart WindowsSystem:(pc6) Step8: addthednsserverentry RightclickMynetworkplaces>rightclicklocalareaconnection >selectproperties>add192.168.0.4inpreferreddnsserver Step9: clickMycomputer>ComputerName>selectDomainandtypelinux.com clickokandrestartthecomputer Step10: loginasuser user:san

password:<typesmbpassword> System4 Step1: installthenisserverpackage #yuminstallypserv Step2: #nisdomainnameplx.com editthenetworkfile Lineno:last #vim/etc/sysconfig/network NISDOMAIN=plx.com Step3: createadirectorywiththenameofdomainname #mkdir/var/yp/plx.com Step4: addusers #mkdir/profile #useraddd/profile/anuanu starttheservices #serviceypservstart #serviceyppasswddstart Step5: initializethenisdatabase #/usr/lib/yp/ypinitm Atthispoint,wehavetoconstructalistofthehostswhichwill run NISservers.system3.plx.comisinthelistofNISserver hosts. Pleasecontinuetoadd thenamesfortheotherhosts,oneperline.Whenyouaredonewith thelist,typea<controlD>. nexthosttoadd:system3.plx.com nexthosttoadd:<presscontrol+D> ThecurrentlistofNISserverslookslikethis: station3.example.com Isthiscorrect?[y/n:y]y Weneedafewminutestobuildthedatabases... Building/var/yp/plx.com/ypservers... Running/var/yp/Makefile... gmake[1]:Enteringdirectory`/var/yp/plx.com' Updatingpasswd.byname... Updatingpasswd.byuid... Updatinggroup.byname... Updatinggroup.bygid... Updatinghosts.byname... Updatinghosts.byaddr... Updatingrpc.byname... Updatingrpc.bynumber... Updatingservices.byname... Updatingservices.byservicename... Updatingnetid.byname... Updatingprotocols.bynumber... Updatingprotocols.byname... Updatingmail.aliases... NISServerConfiguration

gmake[1]:Leavingdirectory`/var/yp/plx.com' system3.plx.comhasbeensetupasaNISmasterserver. Nowyoucanrunypinitssystem3.plx.comonallslaveserver. Step6: restarttheypservandyppasswddservices. #chkconfigypservon;chkconfigyppasswddon #serviceypservrestart #serviceyppasswddrestart Step7: shareprofiledirectory #vim/etc/exports /profile*(rw) #servicenfsrestart ClientSide:(sys4) Step8: installypbindpackage #yuminstallypbind Step9: enablenisauthentication #authconfigtui(or)#authconfiggtk Enable>UseNis>next>Domain:plx.comServer:192.168.0.40>ok Step10: mounttheprofiledirectoryfromserver #mkdir/profile #mount192.168.0.40:/profile/profile loginasnisuser #suanu UpdatetheNISdatabase System4: Step1: addnewuser #useraddd/profile/nis1nis1;passwdnis1 #cd/var/yp #make #serviceypservrestart ClientSide: Step2: loginasnewuser #sunis1 LDAPServerConfiguration System4: Step1: yuminstallopenldapserversopenldapclientsopenldap Step2: edittheldapconfigurationfile #vim/etc/openldap/slapd.conf Lineno:69 suffix dc=sun,dc=com Lineno:70 rootdn cn=Manager,dc=sun,dc=com Step3: editconfigurationfile Lineno:71

$DEFAULT_MAIL_DOMAIN=sun.com Lineno:74 $DEFAULTBASE=dc=sun,dc=com Step4: #touch/etc/networks #/usr/share/migration/migrate_all_offline.sh #chownldap.ldap/var/lib/openldap restarttheservice #chkconfigldapon;serviceldaprestart ClientSide:(sys4) Step5: installopenldapclientspackage #yuminstallopenldapclients Step6: enableldapauthentication #authconfigtui(or)#authconfiggtk Enable>UseLDAP(UserInformation)>UseLDAPauthentication (authentication)>next>Server:ldap://192.168.0.40 Basedn:dc=sun,dc=com>ok Step10: mounttheprofiledirectoryfromserver #mkdir/profile #mount192.168.0.40:/profile/profile loginasldapuser #suanu PartitionManagement PartitionCreation Step1: listthepartitions #fdiskl Disk/dev/hda:40.0GB,40020664320bytes 255heads,63sectors/track,4865cylinders Units=cylindersof16065*512=8225280bytes Device BootStartEndBlocksIdSystem /dev/hda1* 11310439183Linux /dev/hda2 1411609213277+8eLinuxLVM /dev/hda3 116117975116702+83Linux /dev/hda4 17984865246437105Extended /dev/hda5 17982434511667183Linux /dev/hda6 2435249952208182 Linuxswap/Solaris Step2: createapartition #fdisk/dev/hda Command(mforhelp):n Firstcylinder(37174865,default3717): Usingdefaultvalue3717 Lastcylinder+sizeMor+sizeK(37174865,default4865):+1000M Command(mforhelp):w Thepartitiontablehasbeenaltered! Callingioctl()torereadpartitiontable. Syncingdisks. Step3:

refreshthekernelpartitiontable #partprobe Step4: formatthepartition #mkfs.ext3/dev/hda7 createlabelforpartition #e2label/dev/hda7sample Step5: createamountpoint mkdir/data #vim/etc/fstab Lineno:last /dev/hda7 /data ext3 defaults (or) LABEL=sample /data ext3 defaults #mounta

12 12

Partitiondeletion Step1: #fdisk/dev/hda Command(mforhelp):p DeviceBootStartEndBlocksIdSystem /dev/hda1*11310439183Linux /dev/hda21411609213277+8eLinuxLVM /dev/hda3116117975116702+83Linux /dev/hda417984865246437105Extended /dev/hda517982434511667183Linux /dev/hda62435249952208182Linuxswap /dev/hda725003716977552183Linux Command(mforhelp):d Partitionnumber(17):7 Command(mforhelp):w Thepartitiontablehasbeenaltered! Callingioctl()torereadpartitiontable. Syncingdisks. Step2: #partprobe Step3: #cat/proc/partitions LogicalVolumeManagement Step1: create2partitions #fdisk/dev/hda Command(mforhelp):p DeviceBootStartEndBlocksIdSystem /dev/hda1*11310439183Linux /dev/hda21411609213277+8eLinuxLVM /dev/hda3116117975116702+83Linux /dev/hda417984865246437105Extended /dev/hda517982434511667183Linux /dev/hda62435249952208182Linuxswap Command(mforhelp):n

Firstcylinder(25004865,default2500): Usingdefaultvalue2500 Lastcylinderor+sizeMor+sizeK(25004865,default4865):+1000M Command(mforhelp):n Firstcylinder(26234865,default2623): Usingdefaultvalue2623 Lastcylinderor+sizeMor+sizeK(26234865,default4865):+500M Command(mforhelp):w Thepartitiontablehasbeenaltered! Callingioctl()torereadpartitiontable. Syncingdisks. #partprobe Step2: convertthepartitionsintophysicalvolume #pvcreate/dev/hda7/dev/hda8 displaypvinformation #pvdisplay/dev/hda7/dev/hda8 Step3: createvolumegroupthathold2physicalvolumes #vgcreatevgsample/dev/hda7/dev/hda8 displayvginformation #vgdisplayvgsample Step4: createalogicalvolume #lvcreatendataL700Mvgsample displaylvinformation #lvdisplay/dev/vgsample/data Step5: formatthelogicalvolume #mkfs.ext3/dev/vgsample/data #mkdir/data #mount/dev/vgsample/data/data ExtendaLogicalVolumeSize Step1: #umount/data #lvextendL+100M/dev/vgsample/data #lvdisplay/dev/vgsample/data Step2: formatonlyextendedportitionoflvthatis100MB #e2fsckf/dev/vgsample/data #resize2fs/dev/vgsample/data ReduceaLogicalVolumeSize Step1: #umount/data #lvreduceL100M/dev/vgsample/data #lvdisplay/dev/vgsample/data ExtendaVolumeGroup Step1: createapartitionusingfdisk covertthatpartitionintopv #pvcreate/dev/hda9

Step2: addcreatedpartitionintoexistingvolumegroup #vgextendvgsample/dev/hda9 #vgdisplay CreatesnapshotofLogicalVolume

Step1: #mount/dev/vgsample/data/data #cp/etc/*/data Step2: createasnapshot #lvcreatendatacopysL10M/dev/vgsample/data Step3: displaylvinformation #lvs mountthesnapshot #mount/dev/vgsample/datacopy/mnt RemoveaShapshotorLogicalvolume Step1: removeLVsnapshot #umount/dev/vgsample/datacopy #lvremove/dev/vgsample/datacopy removeLV #umount/dev/vgsample/data #lvremove/dev/vgsample/data RemoveaVolumeGroup Step1: BeforeremovingVolumeGroup,removealllvinvolumegroup #vgremovevgsample RemovePhysicalVolumes Step1: #pvremove/dev/hda7/dev/hda8/dev/hda9 SoftwareRAIDConfiguration Step1: create3partitionsandcreateraiddevice #mdadmC/dev/md1ayesl1n2/dev/hda7/dev/hda8 detailsofraiddevice #mdadmD/dev/md1 Step2: formattheraiddevice #mkfs.ext3/dev/md1 mounttheraiddevice #mount/dev/md1/mnt Step3: copythefileintoraiddevice #cp/etc/*/mnt umountthedevice #umount/mnt Step1: RAIDTestingandRecovery

failapartitioninraiddevice #mdadm/dev/md1d/dev/hda8 #mdadmD/dev/md1 Step2: removeafailedpartition #mdadm/dev/md1r/dev/hda8 Step3: testdatarecovery #mount/dev/md1/mnt #lsl/mnt Step4: addnewpartitiontoraiddevice #umount/mnt #mdadm/dev/md1a/dev/hda9 #mdadmD/dev/md1 NetworkInstallationServer Serverip:192.168.0.50 NFSBasedInstallationServer Serverside: Step1: copythecdordvdimagesintoserver #mkdir/images insertcdordvdandthentypethefollowing #ddif=/dev/cdromof=/images/disk1.iso copyallserverorclientcdimagesinto/imagesdirectory Step2: #yumyinstallnfsutils sharetheimagesdirectoryintonetwork #vim/etc/exports /images*(rw) Step3: restartthenfsservice #servicenfsrestart FTPbasedInstallationServer: ServerSide: Step1: installftppackage #yumyinstallvsftpd Step2: copyserverpackagesfromcdsinto/var/ftp/pubandconfigureyum Step3: changepermissionsandcontext #chmodR777/var/ftp/pub #chcontRhhttpd_sys_content_t/var/ftp/pub Step4: restarttheftpservice #servicevsftpdrestart HTTPBasedInstallationServer: Serverside: Step1: installandconfiguretheapacheserver Step2: alreadypackagesarecopiedintoftplocationsoonlycreate

shortcut ofpackagelocationat/var/www/html #lns/var/ftp/pub/var/www/html Step3: restartthehttpservice #servicehttpdrestart ClientSide: Step1: insertbootorfirstcdindrive typelinuxaskmethodatthebootprompt boot:linuxaskmethod selectinstallationlanguageandpressok selectkeyboardlanguageandpressok Step2: selectinstallationtype nfsorftporhttp NFS:Server:192.168.0.50,Directory:/images FTP:Server:192.168.0.50,Directory:pub HTTP:Server:192.168.0.50,Directory:pub andcontinuetheinstallation ServerSide Step1: edityumrepoconfigurationfile #vim/etc/yum.repos.d/server.repo [base] name=serverpackages baseurl=file:///var/ftp/pub/Server gpgcheck=0 Step2: installkickstartconfigurationutility #yumysystemconfigkickstart Step3: #systemconfigkickstart& selectorenterconfigurationandsavefileinftporhttplocation thatis/var/ftp/pubor/var/www/html Step4: editthekickstartfileandremovecommentlines #vim/var/ftp/pub/ks.cfg install text keyboardus langen_US keyskip urlurl=ftp://192.168.0.50/pub networkbootproto=dhcpdevice=eth0onboot=on zerombr clearpartallinitlabel part/bootbytesperinode=4096fstype="ext3"size=100 part/bytesperinode=4096fstype="ext3"size=10000 partswapbytesperinode=4096fstype="swap"recommended xconfigdefaultdesktop=GNOMEdepth=16resolution=1024x768 timezoneAsia/Calcutta bootloaderlocation=mbr rootpwiscrypted$1$a3R4UJe.$M6f254v4X9kuSMf0oMQIi. KickstartFileCreation

authuseshadowenablemd5 firewalldisabled selinuxpermissive firstbootdisable reboot %packages @servercfg @basex @admintools @gnomedesktop @printing @systemtools @textinternet @graphicalinternet @editors ClientSide: Step1: insertbootorfirstcdindrive typelinuxksatthebootprompt boot:linuxks=ftp://192.168.0.50/pub/ks.cfg WindowsSystem: ip=192.168.0.2 domainname=priya.com systemname=pc6 LinuxSystem: ip=192.168.0.4 systemname=station4 Pc6: Step1: installandconfigureactivedirectorywithdns Step2: addlinuxsystementryindnspriya.comzone Step3: addlinuxsystementryinActiveusersandcomputer station4: Step4: installkerberosandsambapackages #yuminstallsambasambaclientsambacommon #yuminstallkrb5libskrb5workstationpam_krb5krb5authdiag Step5: configurekerberos #vim/etc/krb5.conf [logging] default=FILE:/var/log/krb5libs.log kdc=FILE:/var/log/krb5kdc.log admin_server=FILE:/var/log/kadmind.log [libdefaults] default_realm=PRIYA.COM dns_lookup_realm=false dns_lookup_kdc=false ticket_lifetime=24000 JoinLinuxSystemToWindows2003ADS

[realms] PRIYA.COM={ kdc=priya.com default_domain=priya.com } [domain_realm] .priya.com=PRIYA.COM priya.com=PRIYA.COM [kdc] profile=/var/kerberos/krb5kdc/kdc.conf

[appdefaults] pam={ debug=false ticket_lifetime=36000 renew_lifetime=36000 forwardable=true krb4_convert=false } Step6: configuresambaserverroleasdomainmember #vim/etc/samba/smb.conf [global] workgroup=PRIYA security=ads realm=PRIYA.COM netbiosname=station4 encryptpasswords=yes passwordserver=priya.com clientusespnego=no serversigning=auto cupsoptions=raw logfile=/var/log/samba/%m.log maxlogsize=50 socketoptions=TCP_NODELAYSO_RCVBUF=8192SO_SNDBUF=8192 printcapname=/etc/printcap dnsproxy=No idmapuid=1677721633554431 idmapgid=1677721633554431 templateshell=/bin/bash winbindusedefaultdomain=yes winbindseparator=+ [homes] comment=HomeDirectories writable=yes browseable=no [Data] comment=datadirectory path=/data public=yes #testparm Step7: adddnsentryinresolv.conf

#vim/etc/resolv.conf searchpriya.com nameserver192.168.0.2 Step8: Togetakerberosticket #kinitadministrator@PRIYA.COM joinlinuxtowindowsserver #netadsjoinUadministrator Step9: #authconfigtui selectwinbindfromuserinformationandauthenticationinformation selectnext securitymodel:ads domain:PRIYA domaincontrollers:priya.com realm:PRIYA.COM Step10: startthesambaandwinbindservice #chkconfigwinbindon #chkconfigsmbon #servicesmbrestart #servicewinbindrestart listwindowsusers #wbinfou Administrator win1 win2 win2 listwindowsgroup #wbinfog loginaswindowsuser #mkdirp/home/PRIYA/win1 #cp/etc/skel/.*/home/PRIYA/win1 #chownRwin1.DomainUsers/home/PRIYA/win1 #suwin1 GrubPasswordProtection Step1: createapasswordandappendthepasswordtogrubconfigurationfile #grubmd5crypt>>/etc/grub.conf <Typepassword,pressenter> <Retypepassword,pressenter> Step2: editgrub.conffile BeforeEditing #vim/etc/grub.conf default=0 timeout=5 splashimage=(hd0,0)/grub/splash.xpm.gz hiddenmenu titleRedHatEnterpriseLinuxServer(2.6.188.el5) root(hd0,0)

kernel/vmlinuz2.6.188.el5roroot=LABEL=/rhgbquiet initrd/initrd2.6.188.el5.img Password: Retypepassword: $1$Y1AVk$jpKrijdWkRY3M8WDBPJaI0 AfterEditing #vim/etc/grub.conf default=0 timeout=5 splashimage=(hd0,0)/grub/splash.xpm.gz hiddenmenu passwordmd5$1$Y1AVk$jpKrijdWkRY3M8WDBPJaI0 titleRedHatEnterpriseLinuxServer(2.6.188.el5) root(hd0,0) kernel/vmlinuz2.6.188.el5roroot=LABEL=/rhgbquiet initrd/initrd2.6.188.el5.img NetFilterConfiguration

Tables Input Filter table Nat table Mangle Table

Forward Output Prerouting Postrouting Yes Yes Yes Yes Yes Yes Yes

Yes

Yes

Yes

Yes

FilterTable(INPUT) station2 Step1: listfiltertablerulesiniptables #iptablesL Step2: createanewruletoblockinputsshconnectionfromstation5 #iptablestfilterIINPUTs192.168.0.5ptcpdport22j REJECT #iptablesL ChainINPUT(policyACCEPT) targetprotoptsourcedestination REJECTtcp192.168.0.5anywheretcp dpt:sshrejectwith icmpport unreachable

ChainFORWARD(policyACCEPT) targetprotoptsourcedestination ChainOUTPUT(policyACCEPT) targetprotoptsourcedestination station5 Step3: connectthestation2usingssh #sshroot@192.168.0.2 ssh:connecttohost192.168.0.2port22:Connectionrefused FilterTable(OUTPUT) station2 Step1: listfiltertablerulesiniptables #iptablesL Step2: createanewruletoblockinputsshconnectionfromstation5 #iptablestfilterIOUTPUTd192.168.0.5ptcpdport22j REJECT #iptablesL ChainINPUT(policyACCEPT) targetprotoptsourcedestination REJECTtcp192.168.0.5anywheretcp dpt:sshrejectwith icmpportunreachable ChainFORWARD(policyACCEPT) targetprotoptsourcedestination ChainOUTPUT(policyACCEPT) targetprotoptsourcedestination REJECTtcpanywhere192.168.0.5tcp dpt:sshrejectwithicmp portunreachable Step3: connectthestation2usingssh #sshroot@192.168.0.5 ssh:connecttohost192.168.0.5port22:Connectionrefused DeleteaRuleinFiltertable station2 Step1: listtherules #iptablesL Step2: deletearuleinfiltertableinputchain #iptablesDINPUT1 #iptablesL ChainINPUT(policyACCEPT) targetprotoptsourcedestination ChainFORWARD(policyACCEPT) targetprotoptsourcedestination ChainOUTPUT(policyACCEPT) targetprotoptsourcedestination REJECTtcpanywhere192.168.0.5tcp dpt:sshrejectwithicmp

portunreachable station2 Step1: #iptablesF RemoveallRulesinFiltertable

FilterTable(Forward) station2 Step1: configurerouting #vim/etc/sysctl.conf net.ipv4.ip_forward=1 #sysctlp Step2: addruleiniptable #iptablesIFORWARDs192.168.0.5d10.0.0.4ptcpdport22 j REJECT #iptablesIFORWARDs10.0.0.4d192.168.0.5ptcpdport22j ACCEPT #iptablesL ChainINPUT(policyACCEPT) targetprotoptsourcedestination ChainFORWARD(policyACCEPT) targetprotoptsource destination ACCEPTtcp10.0.0.4 192.168.0.5tcpdpt:ssh REJECTtcp192.168.0.510.0.0.4tcpdpt:sshrejectwith icmpportunreachable ChainOUTPUT(policyACCEPT) targetprotoptsourcedestination station5 Step3: #ssh10.0.0.4 ssh:connecttohost192.168.0.5port22:Connectionrefused station4 Step4: #ssh192.168.0.5 root@192.168.0.5password: station2 Step5: removeallrules #iptablesF NATTable(Prerouting) Preroutingisusedtochangethedestinationaddress.soitis otherwisecalledDestinationNAT(DNAT). station2 Step1: addaruleinnattable #iptablestnatIPREROUTINGs192.168.0.5d10.0.0.4jDNAT todest10.0.0.2 #iptablestnatL ChainPREROUTING(policyACCEPT) targetprotoptsourcedestination

DNATall192.168.0.510.0.0.4to:10.0.0.2 ChainPOSTROUTING(policyACCEPT) targetprotoptsourcedestination ChainOUTPUT(policyACCEPT) targetprotoptsourcedestination station5: connectthestation4 #ssh10.0.0.4 root@10.0.0.4password: [root@station2~]# NATTable(Postrouting) Postroutingisusedtochangethesourceaddress.soitisotherwise calledSourceNAT(SNAT) station4 Step1: addainputruletorejectthestation5 #iptablesIINPUTs192.168.0.5jREJECT station5 Step2: #ssh10.0.0.4 ssh:connecttohost192.168.0.5port22:Connectionrefused station2 Step3: addaruleinnattable #iptablestnatIPOSTROUTINGjSNATs192.168.0.5d10.0.0.4 tosource10.0.0.7 #iptablestnatL ChainPREROUTING(policyACCEPT) targetprotoptsourcedestination ChainPOSTROUTING(policyACCEPT) targetprotoptsourcedestination SNATall192.168.0.510.0.0.4to:10.0.0.7 ChainOUTPUT(policyACCEPT) targetprotoptsourcedestination station5 Step4: connectthestation4 #ssh10.0.0.4 PostroutingMasquerade station4 Step1: addainputruletorejectthestation5 #iptablesIINPUTs192.168.0.5jREJECT station5 Step2: #ssh10.0.0.4 ssh:connecttohost192.168.0.5port22:Connectionrefused station2 Step3: #iptablestnatF

addaruleinnattable #iptablestnatIPOSTROUTINGs192.168.0.5oeth1jMASQUERADE #iptablestnatL ChainPREROUTING(policyACCEPT) targetprotoptsourcedestination ChainPOSTROUTING(policyACCEPT) targetprotoptsourcedestination MASQUERADEall192.168.0.5anywhere ChainOUTPUT(policyACCEPT) targetprotoptsourcedestination station5 Step4: connectthestation4 #ssh10.0.0.4 FingerServerConfiguration Fingerserverusedtoseeinformationaboutremotesystemusers (loginname,homedirectory,name,howlongthey'vebeenloggedintothe system,etc.). serverside station5: Step1: installfingerserverpackage #yuminstallfingerserver Step2: startthefingerservice #chkconfigxinetdon #chkconfigfingeron #servicexinetdstart Startingxinetd:[OK] clientside: station2: Step3: installfingerrpm #yuminstallfinger Step4: #fingertest@station5 (or) #gnomenettool RemoteUsersServer Theremoteusersserverisusedtofindoutwhoisloggedinto remotemachinesonthelocalnetwork. serverside station5: Step1: installrusersserverpackage #yuminstallrusersserver Step2: startthefingerservice #chkconfigruserson #chkconfigrstatdon #servicerstatdstart

Startingrstatservices:[OK] #servicerusersdstart Startingrusersservices:[OK] clientside station2: Step3: installrusersrpm #yuminstallrusers Step4: #rusers192.168.0.5 #rup192.168.0.5 DHCPIPV6SERVER station5: Step1: enableipv6 #vim/etc/sysconfig/network NETWORKING=yes NETWORKING_IPV6=yes HOSTNAME=station5.example.com Step2: enableipv6ineth0configurationfile #vim/etc/sysconfig/networkscripts/ifcfgeth0 TYPE=Ethernet DEVICE=eth0 HWADDR=00:19:d1:8c:de:36 BOOTPROTO=none USERCTL=no IPV6INIT=yes IPV6ADDR=3ffe:501:ffff:1::22/64 PEERDNS=yes NETMASK=255.255.255.0 IPADDR=192.168.0.5 Step3: installdhcpv6package #yuminstalldhcpv6 Step4: #cp/usr/share/doc/dhcpv60.10/dhcp6s.conf/etc/ Step5: specifytheinterfaceinconfigfile #vim/etc/sysconfig/dhcp6s DHCP6SIF=eth0 DHCP6SARGS= Step6: restartthedhcpv6service #servicedhcp6srestart IPLeasesInformationfile:/var/lib/dhcpv6/server6.leases station2 Step7: installdhcpv6clientpackage #yumyinstalldhcpv6_client Step8: #vim/etc/sysconfig/network NETWORKING=yes

NETWORKING_IPV6=yes HOSTNAME=station2.example.com Step9: enableipv6ineth0configurationfile #vim/etc/sysconfig/networkscripts/ifcfgeth0 TYPE=Ethernet DEVICE=eth0 HWADDR=00:19:d1:8c:de:36 BOOTPROTO=none USERCTL=no IPV6INIT=yes DHCPV6C=yes PEERDNS=yes NETMASK=255.255.255.0 IPADDR=192.168.0.2 Step10: restartthenetworkservice #servicenetworkrestart