Telnet session get disconnected

[smuhaisen01]

Dears

I am using site to site vpn with ASA 5550

and some users telnet to a unix macine on the the other end.

the problem appear if the session is ideal for 30s,

can any one help ??

Thanks,

[Jennifer Halim]

I don't think it is anything to do with the site-to-site VPN itself.

You might want to look into TCP timeout on both the ASA and see if there is any idle timeout configured to be 30 seconds.

[smuhaisen01]

hi

all  the TCP timeout is more then 30s .

the telnet session is working fine if i use citrix vpn.

but not with Cisco VPN

[Jennifer Halim]

I assume that the VPN Client itself does not get disconnected when the telnet session disconnects? Are you still able to access

any other servers via the VPN Client connection? Can you ping the server when the telnet session disconnect? I assume that reconnecting back to the telnet session works fine after it gets disconnect?

One of a possible reason why it's working fine via Citrix gateway is because connection between Citrix to the server does not pass through the firewall.

With VPN Client access, the VPN is terminated on the firewall and the clear text packet still gets inspected on the firewall. Is there any other specific timeout that is configured under policy-map?

[smuhaisen01]

I found what cause the issue but i could not solve it.

the telnet session sent TCP-keep-alive ,apparently the firewall drop them

so the session closed.

any idea in how to resolve this problem

Thanks

[00u18jg7x27DHjRMh5d7]

Did anyone find a solution for this? I am having a similar problem.

Thanks