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openssh connection drop

Ragni Singh
Super Advisor

openssh connection drop

Hello,

my ssh connection is broken after 1-hour of idling on the terminal. Can you please help, points will be assigned.

Its a Linux server using..

Red Hat Enterprise Linux AS release 4 (Nahant Update 7)

OpenSSH_3.9p1, OpenSSL 0.9.7a Feb 19 2003

I have made the following change to sshd_config but that doesn't seem to help.

ClientAliveInterval 30
ClientAliveCountMax 5

9 REPLIES
Steven E. Protter
Exalted Contributor

Re: openssh connection drop

Shalom,

Systems administration 101.

When you change something and suddenly something is broken, you back out your change. It may not be obvious, but your change triggered the problem.

SEP
Steven E Protter
Owner of ISN Corporation
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Ragni Singh
Super Advisor

Re: openssh connection drop

We'll I have went back and commented those 2 lines back. No other changes were made.
Alan_152
Honored Contributor

Re: openssh connection drop

Try this:

ClientAliveInterval 216500
ClientAliveCountMax 0

Be sure to HUP the sshd daemon after making the change.

(Courtesy of http://support.citrix.com/article/CTX108882)
Ragni Singh
Super Advisor

Re: openssh connection drop

Hi Alan,


what does that client interval time get set to?
Alan_152
Honored Contributor

Re: openssh connection drop

That's roughly 60 hours. My lab has it set that high to run automated scripts.
Ragni Singh
Super Advisor

Re: openssh connection drop

Thanks Alan, so this basically means that the connection will stay up for 60 hours?
Ragni Singh
Super Advisor

Re: openssh connection drop

I'm sorry Alan but I tried it and it still dropped me after 1 hour.
Vitaly Karasik_1
Honored Contributor

Re: openssh connection drop

Do you have firewall[s] between your ssh client and sertver? If so, FW may have idle timeouts too.
Wilfred Chau_1
Respected Contributor

Re: openssh connection drop

Is there a firewall between the client and the server? There may be a timeout set on the firewall that will terminate idle ssh session.