Hello all...
I am trying to put an older box to good use. It is a 1750 router with an ADSL card for my home Internet. I have a static IP to provide ssh access to one of my PCs.
The Dialer and PPPoE is working perfectly, and after a reboot all my "ip nat inside source static tcp [LAN IP] 22 [WAN IP] 22 extendable" entries work fine. After about 6-8 minutes (regardless if a connection is open on the translation or not) the mapping stops working. I see the directive in the config and also the "sh ip nat trans" reports that the translations are there and ready to go...
Pro Inside global Inside local Outside local Outside global tcp [WAN IP]:22 [LAN IP]:22 --- --- udp [WAN IP]:53 [LAN IP]:53 --- ---
What is especially odd is that while I see the directives in the running config, if I issue a "no ip nat ins..." command I get "%Translation not found" and reissuing the "ip nat ins..." commands causes duplicate entries in the running config and the "sh ip nat trans" output. Issuing the command also causes the translation to work again, but only for the expected 6-8 minute period.
I think this is a bug, but I don't believe that I have any recourse with Cisco as the unit is EOL and out of contract...
I am running 12.3(26) which appears to be the last version built for the 1750 router... Any suggestions are welcomed.
Thanks. -Cheers, Peter.