Nat and telnet issue

Unanswered Question
Nov 20th, 2008
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I have a quick quesiton....on my edge router I NAT both in and out. Coming in

I have a NAT pool of Also my customer has me NATTing my internal server to a nat block of So what I have done to test is on my edge router I created a loopback interface with the ip of I have a server of which has a static nat of I don't know if this is a problem or not but when I do a:

telnet /source-interface loopback 0

The telnet hangs from my edge router. Now if I do the same thing but to the real ip address from my end router I can connect:

telnet /source-interface loopback10

Is this something I need to worry about?

I did a ping/traceroute using the NAT and I get responses just when I try to telnet to

By the way that is what the customer sees my

Thank you in advance!!!

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ullasupendran Thu, 11/20/2008 - 09:13
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Put ip nat inside on the loop back 0 interface and try.Also make sure that is in the inside NAt pool.

Hope that helps


wgranada1 Thu, 11/20/2008 - 10:14
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Thanks for the advice but that didn't work, maybe I'm explaining it wrong. I'm just doing this as a pretest for Sundays real test. I didn't want to wait till then to find out its now working. anyways sourcing from loopback10 I can ping and traceroute to but not telnet. I do a traceroute using the real ip and the NAT IP of and both take the same path and end up at the same place. The is what the customer will see my server as not the


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