Static NATting

["Greg Dickinson" <gdickinson@logistasolutions.com>]

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Hello all,

This question will undoubtedly get me branded as a n00b :-) but I am about to go insane trying to figure this out.  Am I doing something wrong?

Here's the scenario:

I have a RedHat 8 (Kernel 2.4-18) firewall that I am going to run squid on, as well as do some static NATting for some of the administrative PC's here.  I have configured the Cisco router to direct all the traffic from the affected /24 subnet to the linux box, and I am trying to do a 1-to-1 NAT so we can do things like Terminal Services, etc. across the internet.  I am using the following commands (the addresses are for my PC)

iptables -t nat -A POSTROUTING -s 10.227.101.4 -j SNAT --to 207.157.9.<something>
iptables -t nat -A PREROUTING -s 207.157.9.<something> -j DNAT --to 10.227.101.4

And all the traffic summarily dies at the firewall :-)

I have aliased the 207.157.9.<something> address to the eth1 interface of the firewall.  What simple, obvious thing have I missed?

TIA,

--Greg



Gregory B. Dickinson, CNE CCNA
Systems Engineer
Logista Solutions
(205) 231-5602
(tQ = 2b|!2b)


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