Bug 97989 - Heartbeat patch wanted for ssh client
Summary: Heartbeat patch wanted for ssh client
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: None
Product: Red Hat Linux
Classification: Retired
Component: openssh
Version: 9
Hardware: All
OS: Linux
low
medium
Target Milestone: ---
Assignee: Tomas Mraz
QA Contact: Brian Brock
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2003-06-25 00:20 UTC by Michael S. Fischer
Modified: 2007-03-27 04:07 UTC (History)
0 users

Fixed In Version:
Doc Type: Enhancement
Doc Text:
Clone Of:
Environment:
Last Closed: 2005-02-07 13:43:42 UTC
Embargoed:

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Description Michael S. Fischer 2003-06-25 00:20:52 UTC 
The stock OpenSSH distribution does not support a periodic "Heartbeat" (protocol NOOP) to 
keep the connection alive.  If a NAT device is in place between the client and server, and no 
traffic is seen for some time, the NAT device will terminate the connection.  Heartbeat keeps 
this from happening (and should not be confused with TCP keepalives, which are different). 
 
Several heartbeat patches on the Net exist.  One is from here: 
http://www.sc.isc.tohoku.ac.jp/~hgot/sources/openssh-watchdog.html 
 
Another is provided with Debian; you should be able to find it easily.
Comment 1 Darren Tucker 2004-07-01 05:44:15 UTC 
FYI: stock OpenSSH now has these (ClientAliveInterval and
ServerAliveInterval).
Comment 2 Tomas Mraz 2005-02-07 13:43:42 UTC 
There is openssh-3.9p1 in the FC3.
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