Журнал лабораторных работ

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Журнал

Понедельник (06/10/13)

/dev/pts/4
14:36:42
#dig -x 192.168.13.253 +short
net.nt.
fobos.net.nt.
14:36:42
#dig -x 192.168.13.253 +short
fobos.net.nt.
net.nt.
14:36:43
#^C

14:36:46
#cat /proc/sys
sys/           sysrq-trigger  sysvipc/
14:36:46
#cat /proc/sys
sys/           sysrq-trigger  sysvipc/
14:36:46
#cat /proc/sys
sys/           sysrq-trigger  sysvipc/
14:36:46
#cat /proc/sys/net/ipv
ipv4/ ipv6/
14:36:46
#cat /proc/sys/net/ipv
ipv4/ ipv6/
14:36:46
#cat /proc/sys/net/ipv4/ip_forward
0
14:40:05
#sysctl .
./             .bash_history  .l3rc          .profile
../            .bash_profile  .lesshst       .ssh/
.aptitude/     .bashrc        .lilalo/       .viminfo
14:40:05
#sysctl .
./             .bash_history  .l3rc          .profile
../            .bash_profile  .lesshst       .ssh/
.aptitude/     .bashrc        .lilalo/       .viminfo
14:40:05
#. /etc/bash_completion

14:40:33
#sysctl net.
Display all 617 possibilities? (y or n)
14:40:33
#sysctl net.ipv
Display all 584 possibilities? (y or n)
14:40:33
#sysctl net.ipv4.ip_
net.ipv4.ip_default_ttl           net.ipv4.ip_local_reserved_ports
net.ipv4.ip_dynaddr               net.ipv4.ip_nonlocal_bind
net.ipv4.ip_forward               net.ipv4.ip_no_pmtu_disc
net.ipv4.ip_local_port_range
14:40:33
#sysctl net.ipv4.ip_
net.ipv4.ip_default_ttl           net.ipv4.ip_local_reserved_ports
net.ipv4.ip_dynaddr               net.ipv4.ip_nonlocal_bind
net.ipv4.ip_forward               net.ipv4.ip_no_pmtu_disc
net.ipv4.ip_local_port_range
14:40:33
#sysctl net.ipv4.ip_forward = 1
net.ipv4.ip_forward = 1
error: Malformed setting "="
error: "1" is an unknown key
14:40:48
#sysctl net.ipv4.ip_forward=1
net.ipv4.ip_forward = 1
14:40:52
#sysctl net.ipv4.ip_forward=0
net.ipv4.ip_forward = 0
прошло 13 минут
14:54:15
#traceroute ya.ru
traceroute to ya.ru (213.180.204.3), 30 hops max, 60 byte packets
 1  172.16.32.22 (172.16.32.22)  0.903 ms  0.890 ms  0.866 ms
 2  172.16.32.22 (172.16.32.22)  3002.712 ms !H  3002.714 ms !H  3002.708 ms !H
прошло 20 минут
15:14:56
#ssh root@192.168.13.2
The authenticity of host '192.168.13.2 (192.168.13.2)' can't be established.
RSA key fingerprint is 62:dd:81:b1:0d:50:38:41:e7:82:ea:89:d5:48:16:e0.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '192.168.13.2' (RSA) to the list of known hosts.
root@192.168.13.2's password:
Linux debian2 2.6.39-bpo.2-686-pae #1 SMP Thu Aug 4 11:02:22 UTC 2011 i686
The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.
Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
...
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
default         net.nt          0.0.0.0         UG    0      0        0 eth0
172.16.32.0     *               255.255.255.192 U     0      0        0 eth2
192.168.13.0    *               255.255.255.0   U     0      0        0 eth0
192.168.150.0   *               255.255.255.224 U     0      0        0 eth1
192.168.200.0   172.16.32.56    255.255.255.0   UG    0      0        0 eth2
root@debian2:~# exit
logout
Connection to 192.168.13.2 closed.
15:16:24
#traceroute ya.ru
traceroute to ya.ru (87.250.250.3), 30 hops max, 60 byte packets
 1  172.16.32.22 (172.16.32.22)  0.555 ms  0.559 ms  1.310 ms
 2  192.168.150.22 (192.168.150.22)  2.897 ms  2.896 ms  2.888 ms
 3  net.nt (192.168.13.253)  2.880 ms  2.873 ms  2.866 ms
 4  * * *
 5  * * *
 6  * * *
 7  * * *
 8  * * *
 9  * * *
10  * * *
11  * * *
12  * * *
13  * * *
14  * *^C
15:16:39
#traceroute ya.ru
traceroute to ya.ru (87.250.250.203), 30 hops max, 60 byte packets
 1  172.16.32.22 (172.16.32.22)  1.159 ms  1.151 ms  1.144 ms
 2  192.168.150.22 (192.168.150.22)  3.242 ms  3.240 ms  3.234 ms
 3  fobos.net.nt (192.168.13.253)  3.366 ms  3.360 ms  3.353 ms
 4  * * *
 5  * * *
 6  * * *
 7  * * *
 8  * * *
 9  *^C
15:17:18
#ssh root@192.168.13.253
root@192.168.13.253's password:
Linux fobos 3.1.0-rc9+ #1 SMP Mon Jun 18 15:44:37 EEST 2012 x86_64
The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.
Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
Last login: Mon Jun 10 16:00:44 2013 from 192.168.13.3
fobos:~# ping 192.168.200.128
PING 192.168.200.128 (192.168.200.128) 56(84) bytes of data.
...
 2  192.168.13.2 (192.168.13.2)  1.878 ms  1.875 ms  1.853 ms
 3  192.168.200.128 (192.168.200.128)  2.695 ms  2.679 ms  2.643 ms
fobos:~# traceroute 192.168.200.128
traceroute to 192.168.200.128 (192.168.200.128), 30 hops max, 60 byte packets
 1  192.168.13.1 (192.168.13.1)  0.535 ms  1.625 ms  1.631 ms
 2  192.168.13.2 (192.168.13.2)  2.385 ms  2.382 ms  2.358 ms
 3  192.168.200.128 (192.168.200.128)  2.844 ms^C
fobos:~# exit
logout
Connection to 192.168.13.253 closed.
15:18:41
#ping ya.ru
PING ya.ru (93.158.134.3) 56(84) bytes of data.
^C
--- ya.ru ping statistics ---
8 packets transmitted, 0 received, 100% packet loss, time 7055ms
15:18:57
#ping fobos.net.nt
PING fobos.net.nt (192.168.13.253) 56(84) bytes of data.
64 bytes from fobos.net.nt (192.168.13.253): icmp_req=1 ttl=64 time=0.239 ms
64 bytes from net.nt (192.168.13.253): icmp_req=2 ttl=64 time=0.226 ms
^C
--- fobos.net.nt ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1001ms
rtt min/avg/max/mdev = 0.226/0.232/0.239/0.016 ms
15:19:25
#ssh root@192.168.13.2 cat /etc/network/interfaces
root@192.168.13.2's password:
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
      address 192.168.13.2
      netmask 255.255.255.0
      gateway 192.168.13.253
auto eth1
iface eth1 inet static
      address 192.168.150.1
      netmask 255.255.255.224
      gateway 192.168.150.22
auto eth2
iface eth2 inet static
      address 172.16.32.22
      netmask 255.255.255.192
post-up route add -net 192.168.200.0 netmask 255.255.255.0 gateway 172.16.32.56
прошло 12 минут
15:31:53
#ssh root@192.168.13.2 /etc/init.d/networking restart
root@192.168.13.2's password:
Running /etc/init.d/networking restart is deprecated because it may not enable again some interfaces ... (warning).
Reconfiguring network interfaces...Failed to bring up eth1.
SIOCADDRT: File exists
SIOCADDRT: File exists
Failed to bring up eth2.
done.
15:34:26
#ssh root@192.168.13.2 cat /etc/network/interfaces
root@192.168.13.2's password:
Permission denied, please try again.
root@192.168.13.2's password:
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
      address 192.168.13.2
      netmask 255.255.255.0
      gateway 192.168.13.253
auto eth1
iface eth1 inet static
      address 192.168.150.1
      netmask 255.255.255.224
      gateway 192.168.150.22
auto eth2
iface eth2 inet static
      address 172.16.32.22
      netmask 255.255.255.192
post-up route add -net 192.168.200.0 netmask 255.255.255.0 gateway 172.16.32.56
прошла 41 минута
/dev/pts/1
16:15:40
#vim /etc/sysconfig/network-scripts/
16:15:40
#vim /etc/sysconfig/network-scripts/ifcfg-eth0
16:17:44
#~
NETWORKING=yes
HOSTNAME=centos4.net.nt
GATEWAY=192.168.13.253
"/etc/sysconfig/network" 3L, 62C
16:18:13
#~
DEVICE=lo
IPADDR=127.0.0.1
NETMASK=255.0.0.0
NETWORK=127.0.0.0
# If you're having problems with gated making 127.0.0.0/8 a martian,
# you can change this to something else (255.255.255.255, for example)
BROADCAST=127.255.255.255
ONBOOT=yes
NAME=loopback
"/etc/sysconfig/network-scripts/ifcfg-lo" 9L, 254C
16:18:42
#~
ifcfg             ifconfig          ifconfig_selinux
16:18:42
#man ifcfg
16:18:56
#exit
exit
[root@centos4 ~]# exit
logout
Connection to 192.168.13.4 closed.
/dev/pts/1
16:22:04
#ping ya.ru -n
PING ya.ru (213.180.193.3) 56(84) bytes of data.
64 bytes from 213.180.193.3: icmp_req=1 ttl=58 time=17.4 ms
64 bytes from 213.180.193.3: icmp_req=2 tt