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Problem statement: Not able to ssh from pc1 to any other pc's mentioned below after adding the IP rules tried below
System setup: I have a set of 4 machines connected to HUB.
Their N/W config: Network Address : 172.30.11.0 subnet mask : 255.255.255.0
pc1 : 172.30.11.121 pc2 : 172.30.11.122 pc3 : 172.30.11.123 pc4 : 172.30.11.124
I have created a user routing table named "LAN" in pc1 and added the IP rule mapping this table.
Cmds:
ip rule add from 172.30.11.121/24 table LAN
ip route add default via 172.30.11.97 table LAN
After the addition of this rule, I can't able to SSH to any other PC's but ping succeeds.
Output of IP rules:
root@debian:~# ip rule list
0: from all lookup local
32765: from 172.30.11.121/24 lookup LAN
32766: from all lookup main
32767: from all lookup default
root@debian:~# ip route show table LAN
default via 172.30.11.97 dev eth0
renga_in_stack
Posted 2014-09-09T08:25:21.333
Reputation: 21
Can you add the actual error message you're getting when you attempt to ssh? If you can ping but not ssh it usually implies the remote host isn't taking calls... – Shadur – 2014-09-09T09:46:35.140
Have you set up an equivalent rule on the computer you're trying to ssh to? Also, try "ping -R" to show you the route the ping packets are taking... – ed. – 2014-09-09T10:32:44.283
May I suggest using IPtables instead. It is a well-known and a well-documented firewall application, and you can get lots of support with that. – Cybex – 2019-05-04T17:05:49.490