OS=Centos 6.2

My problem is I have two terminal servers located in LAN that have been natted 
and when I open a browser on either of those servers and go to whatsmyip.com it 
reports the firewalls ip address instead of the ip address assigned in the nat 
configuration. These servers respond to the outside world fine with their 
assigned address and they have functioned for over a year without issue but we 
are now trying to use software supplied by one of our clients to access their 
site and their server won't respond to our client side app. After a long search 
for problems it was determined that the software would connect after removing 
the nat entry for one of the servers and then connecting from that server so 
I'm guessing that they must be doing some sort of spoof check and refusing to 
allow connection to them since the server is identified as one ip to the world 
but is talking from another ip. I have tried a couple of different 
modifications to the masq file but nothing changes the outcome. I read that it 
was not necessary to modify the masq because the one-to-one nat would use the 
assigned ip but thats not happening for sure on either server. When I go to 
whatsmyip from the DMZ the ip is reported correctly from a different server 
that has it's own one-to-one nat but there is no masquerading done for DMZ like 
there is for LAN. Please advise.





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