I tried to telnet to a distant end 3660 router. Connection would timeout. I
was able to ping the router from my PC. The router 
could telnet to the router that was between my PC and itself. Ran capture
and the data yielded this....

IP Source 10.0.0.1 Destination 10.0.1.2 TCP SYN destination port 23 source
port 2407  
IP Source 10.0.1.2 Destination 10.0.0.1 TCP SYN/ACK destination port 2407
source port 6 
IP Source 10.0.0.1 Destination 10.0.1.2 TCP RST destination port 6 source
port 2407

10.0.0.1 is my PC and 10.0.1.2 is the distant end router. I believe the RST
bit is set on the last packet because my PC is not listening to that port.
So it closes this connections with the RST bit.  

We got it working. But the funny thing is.....

The user's 3660 had two interfaces. One on his LAN and one on my LAN. He was
using NAT. He had ip nat outside on both interfaces. The inside interface
was suppose to face my LAN. Once we removed NAT from the interface facing my
LAN, I could telnet to that interface. The NAT string told the router to
overload the interface facing my LAN. 

I understand that removing the misconfiguration fixed my first problem but
why? 

-




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