I am working on a Cisco 2821 router and I am having NAT issues. First, I could not telnet to the outside interface (w/ route-able ip) from the internet. I ran the command:
clear ip nat trans *
and then it worked. So, I added:
ip nat inside source static tcp <inside int> 23 <outside int> 23 extendable
This got telnet to work consistently.
Now I find that VPN is doing the same thing. If I clear the NAT table, it works. Then a short period later I can no longer connect. If I clear the NAT table, it works again.
It appears that the internal Win2k server that runs DHCP/DNS/WINS is getting assigned some of these ports.
Anyone have any idea why this is happening? What static maps do I need to enter to get VPN working?
clear ip nat trans *
and then it worked. So, I added:
ip nat inside source static tcp <inside int> 23 <outside int> 23 extendable
This got telnet to work consistently.
Now I find that VPN is doing the same thing. If I clear the NAT table, it works. Then a short period later I can no longer connect. If I clear the NAT table, it works again.
It appears that the internal Win2k server that runs DHCP/DNS/WINS is getting assigned some of these ports.
Anyone have any idea why this is happening? What static maps do I need to enter to get VPN working?
