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Bug 78074

Summary: xinetd fails with service_limit after number of telnet sessions
Product: [Retired] Red Hat Linux Reporter: Alan Gruskoff <alang>
Component: xinetdAssignee: Jay Fenlason <fenlason>
Status: CLOSED CANTFIX QA Contact: Brock Organ <borgan>
Severity: medium Docs Contact:
Priority: medium    
Version: 7.1CC: herrold, jfeeney
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2006-10-18 16:09:19 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:

Description Alan Gruskoff 2002-11-18 19:23:21 UTC
From Bugzilla Helper:
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Netscape6/6.2.3

Description of problem:
xinetd posts an error in /var/log/secure as:

	xinetd[823]: FAIL: telnet service_limit from=192.168.254.20

when a certain (60) number of concurrent telnet sessions is reached.

Adding a parameter in the /etc/xinetd.d/telnet file as:

	instances       = UNLIMITED

and restarting xinetd solves the problem.

After making this parameter update, you can signal xinted to refresh without
wiping out current connections as: kill -s SIGHUP <pid> where <pid> is the
process ID of xinetd.


Version-Release number of selected component (if applicable):


How reproducible:
Always

Steps to Reproduce:
1. Start 60 telnet sessions
2. Try to start more telnet sessions until you cant get a connection
3. Look in /vat/log/secure for xinetd[823]: FAIL: telnet service_limit from=<IP
addr>
	

Actual Results:  connection failed

Expected Results:  new telnet session should have been launched

Additional info:

This is more of a workaround of an undocumented default parameter than a bug.
Previous versions of RedHat did not have a default limit of number of telnet
sessions. This was a new "feature" in 7.1.  Easy workaround, found the hard way.

Comment 1 Bill Nottingham 2006-08-07 18:47:07 UTC
Red Hat Linux is no longer supported by Red Hat, Inc. If you are still
running Red Hat Linux, you are strongly advised to upgrade to a
current Fedora Core release or Red Hat Enterprise Linux or comparable.
Some information on which option may be right for you is available at
http://www.redhat.com/rhel/migrate/redhatlinux/.

Red Hat apologizes that these issues have not been resolved yet. We do
want to make sure that no important bugs slip through the cracks.
Please check if this issue is still present in a current Fedora Core
release. If so, please change the product and version to match, and
check the box indicating that the requested information has been
provided. Note that any bug still open against Red Hat Linux on will be
closed as 'CANTFIX' on September 30, 2006. Thanks again for your help.

Comment 2 Bill Nottingham 2006-10-18 16:09:19 UTC
Red Hat Linux is no longer supported by Red Hat, Inc. If you are still
running Red Hat Linux, you are strongly advised to upgrade to a
current Fedora Core release or Red Hat Enterprise Linux or comparable.
Some information on which option may be right for you is available at
http://www.redhat.com/rhel/migrate/redhatlinux/.

Closing as CANTFIX.