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New Member

telnet cannot connect

Hi, i have a strange problem with my cisco 837. I can telnet to it from my local lan no problems but when i try to telnet to it from work or any external ip it will not and eventually times out. I did have an access list applied to the vty lines but i allowed my work ip address and could see the match counter increment on the allow statement. I have now completely removed the access list but the problem remains.

Trying 82.12.xxx.xxx...

telnet: connect to address 82.12.xxx.xxx: Connection timed out

line vty 0 4

session-timeout 35791

exec-timeout 35791 0

logging synchronous

length 0

transport preferred telnet

transport input telnet ssh

transport output all

2 REPLIES
New Member

Re: telnet cannot connect

took me a little while but figured it out. I had my internet connected nat'd, the route map pointed to an access list which said permit ip any any. This was causing the remote telnet/ssh problems. The nat access list needed to be for the inside networks permited only i.e. something like permit 192.168.1.0 0.0.0.255 any.

New Member

Re: telnet cannot connect

On the NAT access-list you need to deny the telnet traffic toward the router.

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