[NTLUG:Discuss] Strange iptables problem on CentOS 4.4

[Chris Cox]

. Daniel wrote:
> That's an interesting question.  I had seen something like that not too 
> long ago.  It too was CentOS 4.4 in fact.  I think when I saw the error, I 
> hadn't yes corrected a router configuration mistake I had made.  I was 
> attempting to forward all data for a given IP address to a specific machine 
> within the firewall.  What I failed to do was make the machines responses 
> MASQ through the same IP address.  Once I made the Masq correction, it 
> worked just fine.
> 
> My first impression was that "hey, this must be the 'secure' part of ssh."  
> I still don't understand why ssh is better than telnet... other than the 
> plain text thing, but then again, who will be sniffing in average 
> situations?

You would be surprised.  Think of the poor folks on cable (a giant
neighborhood ethernet hub).... very easy to sniff out passwords
and such.