Re: telnet on local LAN question

[Paul Allen Newell <pnewell@xxxxxxxxxx>]

On 8/17/2011 11:55 PM, James Hogarth wrote:

Based on the above you have one subnet of 192.168.2.0/24 with 192.168.2.3 as the gateway.

Yes

I think there was some confusion when you mentioned firewall rules on your router. Traffic between hosts on the same subnet do not go via the gateway but are direct instead.

As you can probably guess, I did not know this though I was thinking something like this had to be the case if ssh / port 23 was allowed on the iptables and I didn't have to do anything in the router.

Rewinding a little. At this point does a netstat -anp | grep ":25" show any of the systems listening on 0.0.0.0 or are they only listening on 127.0.0.1 still?

I just ran this test:
+++
[root@yoyo ~]# netstat -anp | grep ":25"
tcp        0      0 127.0.0.1:25                0.0.0.0:*                   LISTEN      1510/sendmail: acce
[root@yoyo ~]# netstat -anp | grep ":23"
[root@yoyo ~]#
+++

I'm staring at man netstat and the description of local address, foreign address, and state ... but not certain what it really means in context of your question regarding listening ... I think I am supposed to assume that this output means 127.0.0.1:25 is listening to anything sent from 0.0.0.0:* ?

If that is not corrected then firewall rules are moot.

I can't figure out enough to answer this question

Thanks,
Paul

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