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You could try changing the NAT statement to use the dialler interface rather than the IP but I don't think that would cause it necessarily. What happens when you telnet to that port from the outside?
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I can establish a telnet to your router, but telnetting to 1723 and 3389 just drops. Are the services definitely enabled on the servers? Can you telnet to the server ips on those ports internally?
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I currently have a problem with a Cisco 878 router (Config is attached). I am trying to port forward through the cisco box using static nat translations to port 1723 on the LAN server. I can see the nat attempting to perform the translation when debugging is turned on and the translation also briefly shows in the nat table. I have tried removing all access lists and the same problem still occurs.<br />
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The IOS version is currently 12.4(15)T6 this has been upgraded from 12.4(15)T5 in an attempt to resolve the problem but made no difference.<br />
<br />
Many Thanks<br />
<a href="https://filedb.experts-exchange.com/incoming/2008/07_w29/42069/Cisco878.txt" target="_blank" class="file-inline" title="Config (6 KB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>Cisco878.txt</a>
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Cisco878.txt

I currently have a problem with a Cisco 878 router (Config is attached). I am trying to port forward through the cisco box using static nat translations to port 1723 on the LAN server. I can see the nat attempting to perform the translation when debugging is turned on and the translation also briefly shows in the nat table. I have tried removing all access lists and the same problem still occurs.

The IOS version is currently 12.4(15)T6 this has been upgraded from 12.4(15)T5 in an attempt to resolve the problem but made no difference.

Many Thanks

Cisco 878 SDSL Port Forwarding Problem

A router is a networking device that forwards data packets between computer networks. Routers perform the "traffic directing" functions on the Internet. The most familiar type of routers are home and small office cable or DSL routers that simply pass data, such as web pages, email, IM, and videos between computers and the Internet. More sophisticated routers, such as enterprise routers, connect large business or ISP networks up to the powerful core routers that forward data at high speed along the optical fiber lines of the Internet backbone. Though routers are typically dedicated hardware devices, use of software-based routers has grown increasingly common.