telnet on local LAN question

[Paul Allen Newell]

On 8/17/2011 11:55 PM, James Hogarth wrote:
>
>
>
> Based on the above you have one subnet of 192.168.2.0/24 
> <http://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 at yoyo ~]# netstat -anp | grep ":25"
tcp        0      0 127.0.0.1:25                
0.0.0.0:*                   LISTEN      1510/sendmail: acce
[root at yoyo ~]# netstat -anp | grep ":23"
[root at 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

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.fedoraproject.org/pipermail/users/attachments/20110818/87cbbf09/attachment.html