ssh freezes

suhis · 04-14-2005, 08:20 AM

When i try to contact from my isp(A) to one ssh server(B) it connects fine but it freezes after a while... if i connect from somewhere else (not from my isp) it works fine. A and B are from different isp..

server: Suse 9.2 pro

my computer: windows xp (using putty) and suse 9.2 pro

and this is pretty annoying because i'm admin of this server

ps. im very sorry for my bad english

Frustin · 04-14-2005, 08:55 AM

you need to alter your keepalive time. what client are you using?

suhis · 04-15-2005, 05:23 AM

in windows im using putty and in linux im using shell ssh command.

it works if i first connect to somewhere else (like another shell) and then connect to that server.

how i can alter my keepalive time ?

Frustin · 04-15-2005, 05:33 AM

putty -> connection -> seconds between keepalives (i put 300 in there).

in your $HOME/.ssh/config

Host *
Compression no
ConnectionAttempts 5
ForwardAgent yes
ForwardX11 yes
Protocol 1,2
KeepAlive yes
ProtocolKeepAlives 80

you may not need all of those but the bottom one is importent.

suhis · 04-15-2005, 09:29 AM

ProtocolKeepAlives 80

that line produces this error

/home/jani/.ssh/config: line 8: Bad configuration option: ProtocolKeepAlives
/home/jani/.ssh/config: terminating, 1 bad configuration options

i haven't tried in windows yet

suhis · 04-15-2005, 02:59 PM

tested that putty thing.. doesn't work

flint · 04-22-2005, 11:37 AM

Have you checked your firewall (on server and/or client)?

If you are blocking ICMP packets this can affect dynamic packet negoiations initiated by any router between you and your server.

This stops your server/client responding as it should to these negoiatations.

If in doubt enable ICMP and give that a try.

suhis · 04-29-2005, 09:56 AM

my connection works to everywhere else but not to this server.. (i can connect to another server and from there i connect to that server where i want to)