I have a problem with a firewall. I'm executing a ksh script through a remote session but we have got a Firewall. This firewall kills any sessions whom is 7000 seconds inactive. The problem is I execute this script but it delays more than 7000.
Anyone knows how I can keep my session alive?, If I execute a echo, It could run?
You could use echo, or a ping, or run the script on the remote server using nohup so even if the firewall kills your session the script will continue to run.
Im from Palmerston North, New Zealand, but somehow ended up in London...
Is the firewall killing any session more than 7000 seconds? You can verify this by running a simple script that logs into a remote machine and pings back to your servers every frew seconds. Repeat until more than 7000 seconds elapse. If that works, then you can start a background process in you script to perform the pings, run your normal session and when that session is done, kill the background process.
Yes, echo statements in your script will work just fine to prevent the idle timeout. This works because the echo output is transmitted across the network through the firewall from your HP-UX server to your client PC where it is displayed.
As a result, your session is never idle as long as the period between echo statements is < 7000 secs.
I prefer don't execute my scripts in Background, if I execute a Echo or a ping I can avoid the firewall existent in the server side but I don't know if I can avoid the firewall whom is working in my side (the server is in other city).
It is important to know the difference between "session connection time exceeded" and "idle timeout".
For "session connection time exceeded", the firewall will cut off your connection regardless of whether your connection is idling or not. It limits the total duration of a session.
For "idle timeout", if both the firewalls are implementing "idle timeout", then your session should NOT be cut off as long as the period between your echo statements are less than the "idle timeout" durations implemented on both the firewalls and also less than the tcp_keepalive_interval configured on the HP-UX server.
