Ex no1 (1)

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Ex no1 (1)

  1. 1. EXNO:12 NETWORKING AND INTERFACE PROCEDURE: 1. To get the current user who logged in and to switch user [admin@FossServer ~]$ whoami admin [admin@FossServer ~]$ su Password: [root@FossServer admin]# whoami root 2. To set the IP addresss [root@FossServer network-scripts]# ifconfig eth0 Link encap:Ethernet HWaddr E0:69:95:00:89:20 inet addr:172.16.121.45 Bcast:172.16.255.255 Mask:255.255.0.0 inet6 addr: fe80::e269:95ff:fe00:8920/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500
  2. 2. Metric:1 RX packets:11581 errors:0 dropped:0 overruns:0 frame:0 TX packets:39 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1030758 (1006.5 KiB) TX bytes:7458 (7.2 KiB) Interrupt:20 Memory:fe400000-fe420000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:64 errors:0 dropped:0 overruns:0 frame:0 TX packets:64 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:4752 (4.6 KiB) TX bytes:4752 (4.6 KiB)
  3. 3. [root@FossServer network-scripts]# service NetworkManager status NetworkManager (pid 2648) is running... [root@FossServer network-scripts]# service NetworkManager stop Stopping NetworkManager daemon: [ OK ] [root@FossServer network-scripts]# ifconfig lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:64 errors:0 dropped:0 overruns:0 frame:0 TX packets:64 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:4752 (4.6 KiB) TX bytes:4752 (4.6 KiB) [root@FossServer network-scripts]# ifconfig eth0 eth0 Link encap:Ethernet HWaddr E0:69:95:00:89:20
  4. 4. inet addr:172.16.121.45 Bcast:172.16.255.255 Mask:255.255.0.0 BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:11765 errors:0 dropped:0 overruns:0 frame:0 TX packets:39 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1048164 (1023.5 KiB) TX bytes:7458 (7.2 KiB) Interrupt:20 Memory:fe400000-fe420000 [root@FossServer network-scripts]# service network status Configured devices: lo eth0 Currently active devices: lo [root@FossServer network-scripts]# service network stop Shutting down loopback interface: [ OK ]
  5. 5. [root@FossServer network-scripts]# ifconfig [root@FossServer network-scripts]# ifdown eth0 [root@FossServer network-scripts]# ifdown lo [root@FossServer network-scripts]# ifconfig eth0 172.16.121.45 netmask 255.255.0.0 up [root@FossServer network-scripts]# ifconfig eth0 Link encap:Ethernet HWaddr E0:69:95:00:89:20 inet addr:172.16.121.45 Bcast:172.16.255.255 Mask:255.255.0.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:11992 errors:0 dropped:0 overruns:0 frame:0 TX packets:43 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1068024 (1.0 MiB) TX bytes:8564 (8.3 KiB) Interrupt:20 Memory:fe400000-fe420000
  6. 6. [root@FossServer network-scripts]# ifconfig lo lo Link encap:Local Loopback LOOPBACK MTU:16436 Metric:1 RX packets:64 errors:0 dropped:0 overruns:0 frame:0 TX packets:64 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:4752 (4.6 KiB) TX bytes:4752 (4.6 KiB) [root@FossServer network-scripts]# ifup lo [root@FossServer network-scripts]# ifconfig eth0 Link encap:Ethernet HWaddr E0:69:95:00:89:20 inet addr:172.16.121.45 Bcast:172.16.255.255 Mask:255.255.0.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:12352 errors:0 dropped:0 overruns:0 frame:0 TX packets:43 errors:0 dropped:0 overruns:0 carrier:0
  7. 7. collisions:0 txqueuelen:1000 RX bytes:1100369 (1.0 MiB) TX bytes:8564 (8.3 KiB) Interrupt:20 Memory:fe400000-fe420000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:64 errors:0 dropped:0 overruns:0 frame:0 TX packets:64 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:4752 (4.6 KiB) TX bytes:4752 (4.6 KiB) [root@FossServer network-scripts]# 3. To set the GATEWAY ip address
  8. 8. [root@FossServer network-scripts]# route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 172.16.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0 [root@FossServer network-scripts]# route add default gw 172.16.121.1 [root@FossServer network-scripts]# route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 172.16.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0 0.0.0.0 172.16.121.1 0.0.0.0 UG 0 0 0 eth0 4. To set the DNS ip [admin@FossServer etc]$ su Password: [root@FossServer ~]$ pwd
  9. 9. /home/admin [admin@FossServer ~]$ cd /etc [root@FossServer etc]# pwd /etc [root@FossServer etc]# ls abrt init rc acpi init.d rc0.d adjtime inittab rc1.d aliases inputrc rc2.d aliases.db iproute2 rc3.d alsa ipsec.conf rc4.d alternatives ipsec.d rc5.d anacrontab ipsec.secrets rc6.d ant.conf issue rc.d ant.d issue.net rc.local anthy-conf java rc.sysinit
  10. 10. asound.conf jvm readahead.conf at.deny jvm-commmon reader.conf.d audisp jwhois.conf redhat-release audit kde report.conf avahi krb5.conf report.d BackupPC ld.so.cache request-key.conf bash_completion.d ld.so.conf resolv.conf bashrc ld.so.conf.d rmt blkid lftp.conf rpc bluetooth libaudit.conf rpm bonobo-activation libuser.conf rsyslog.conf cgconfig.conf localtime rwtab cgrules.conf login.defs rwtab.d chkconfig.d logrotate.conf samba ConsoleKit logrotate.d sane.d cron.d ltrace.conf sasl2
  11. 11. cron.daily lvm screenrc cron.deny mail securetty cron.hourly mailcap security cron.monthly mail.rc selinux crontab man_db.conf services cron.weekly maven sestatus.conf crypttab mdadm.conf setroubleshoot csh.cshrc mime.types setuptool.d csh.login mke2fs.conf sgml cups modprobe.d shadow dbus-1 motd shadow- default mtab shells depmod.d mtab.fuselock skel dhcp mtools.conf slrn.rc DIR_COLORS multipath smartd.conf DIR_COLORS.256color Muttrc smolt
  12. 12. DIR_COLORS.lightbgcolor Muttrc.local smrsh dnsmasq.conf my.cnf snmp dnsmasq.d nanorc sos.conf dracut.conf netconfig sound dracut.conf.d NetworkManager squid dumpdates networks ssh elinks.conf nfsmount.conf ssl environment nsswitch.conf sssd ethers ntp statetab exports ntp.conf statetab.d favicon.png obex-data-server stunnel fedora-release odbc.ini subversion festival odbcinst.ini sudoers filesystems openldap sudoers.d fonts openvpn sysconfig foomatic opt sysctl.conf
  13. 13. fprintd.conf PackageKit systemd fstab pam.d system-release gconf pam_pkcs11 system-release-cpe gcrypt pango terminfo gdm passwd udev ghostscript passwd- updatedb.conf gimp pbm2ppa.conf UPower gnome-settings-daemon pcmcia urlview.conf gnome-vfs-2.0 php.d usb_modeswitch.conf gnupg php.ini usb_modeswitch.d gpm-root.conf pinforc vimrc gpm-syn.conf pki virc gpm-twiddler.conf plymouth vpnc gre.d pm vsftpd GREP_COLORS pm-utils-hd-apm-restore.conf warnquota.conf group pnm2ppa.conf webalizer.conf
  14. 14. group- polkit-1 wgetrc grub.conf popt.d wpa_supplicant gshadow portreserve X11 gshadow- ppp xdg gssapi_mech.conf prelink.cache xinetd.d gtk-2.0 prelink.conf xml gtk-3.0 prelink.conf.d yp.conf hal printcap yum host.conf profile yum.conf hosts profile.d yum.repos.d hosts.allow protocols zlogin hosts.deny pulse zlogout hp purple zprofile httpd quotagrpadmins zshenv idmapd.conf quotatab zshrc [root@FossServer etc]#
  15. 15. 5. edit resolv.conf file to set the DNS ip addr [root@FossServer etc]# vi resolv.conf 6. Add the text below in the file at bottom nameserver 172.16.121.2 7. To set the IP address permanently follow the steps below [root@FossServer etc]# vi /etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE="eth0" HWADDR="E0:69:95:00:89:20" NM_CONTROLLED="yes" ONBOOT="no" BOOTPROTO=none IPV6INIT="no" ~ 8. update the above file as below DEVICE="eth0"
  16. 16. HWADDR="E0:69:95:00:89:20" NM_CONTROLLED="yes" ONBOOT="yes" BOOTPROTO=static IPV6INIT="no" IPADDR=172.16.121.45 NETMASK=255.255.0.0 GATEWAY=172.16.121.1 DNS=172.16.121.2 9. save the file and quit the editor. 10. Next start the network and networkmanager services [root@FossServer etc]# service network restart Shutting down interface eth0: [ OK ] Shutting down loopback interface: [ OK ] Bringing up loopback interface: [ OK ]
  17. 17. Bringing up interface eth0: [ OK ] [root@FossServer etc]# service NetworkManager restart Stopping NetworkManager daemon: [FAILED] Setting network parameters... [ OK ] Starting NetworkManager daemon: [ OK ]

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