Server Fault is a question and answer site for system and network administrators. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

If have a draytek 2820 series router that continues to disconnect my ssh sessions after approx. 5 minutes. I suspect it disconnects other stuff as well, because users have been complaining about having to send large emails twice, after receiving errors.

I tried altering the MTU and other stuff to no avail. The router is behind a DOCSYS modem, can this have something to do with it?

share|improve this question

Your ssh problem sounds like a problem with an idle connection; I don't think it's the MTU, as that would cause other strange problems.

share|improve this answer
probably yes, but are there any generic settings for routers or DOCSYS modems that affect idle connections? I could not find them. – Jasper Jul 28 '10 at 13:12
It is easiest enough to test if it is the idle timer -- simply sit there for 5 minutes hitting the space bar every couple of seconds. If you still get disconnected its no the idle timer. – Peter Jul 28 '10 at 18:57

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.