Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.

Bug 4481

Summary:	when accessing a rh6.0 machine from behind a firewall disconnect after a maximum of 30 minutes idle
Product:	[Retired] Red Hat Linux	Reporter:	torbin
Component:	telnet	Assignee:	Florian La Roche <laroche>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	6.0
Target Milestone:	---
Target Release:	---
Hardware:	i386
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	1999-09-05 06:38:41 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description torbin 1999-08-11 19:16:56 UTC

Recently upgraded a server from Redhat 5.2 to Redhat 6.0.
The server is in front of the local firewall machine and
when telnetting from behind the firewall will be
disconnected from the server after a maximum of 30 minutes
of being idle. If accessed from an outside source telnet is
not disconnected even after hours of being idle, also a
Redhat 5.2 machine that has not been upgraded does not
disconnect the telnet sessions from behind the firewall.

Comment 1 Preston Brown 1999-08-23 15:28:59 UTC

are you using tcsh or bash as your shell?

Comment 2 torbin 1999-09-05 06:38:59 UTC

we use bash as the default shell

Comment 3 Pekka Savola 2000-07-16 20:35:15 UTC

This is almost certainly a problem in your firewall.  For example, Linux
Firewalls disconnect idle TCP connections after certain period of time unless
keepalive messages are sent.

If the firewall in question is Linux, you might want to check out 'ipchains -M'.

Also, you could try to downgrade your 6.0 -system's telnet RPM to one from 5.2,
to see if you can isolate the problem.