Bug 167535 - Require encryption for ktelnetd
Summary: Require encryption for ktelnetd
Alias: None
Product: Fedora
Classification: Fedora
Component: krb5
Version: 4
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Nalin Dahyabhai
QA Contact: Brian Brock
Depends On:
TreeView+ depends on / blocked
Reported: 2005-09-04 16:21 UTC by Dax Kelson
Modified: 2007-11-30 22:11 UTC (History)
0 users

Clone Of:
Last Closed: 2005-09-06 15:50:58 UTC

Attachments (Terms of Use)

Description Dax Kelson 2005-09-04 16:21:26 UTC
Description of problem:

One of the new features of MIT Kerberos v1.4 is the ability to *require* a
kerberos encrypted telnet sessions. Previously this was not possible with ktelnetd.

Please enable this by default in the xinetd config file for ktelnetd.

To /etc/xinetd.d/krb5-telnet


server_args     = -e

This will bring the default Fedora config of ktelnetd in sync with kshd.

Comment 1 Dax Kelson 2005-09-04 17:05:09 UTC
Thinking about this more, I have a different proposal that extends how klogin is
already configured.

Today there are two xinetd config files for klogind.

/etc/xinet.d/eklogin  (requires encryption with the -e switch)

This way you can chkconfig on which ever one you want. A reasonable and sound

I propose this same scheme be extended to ktelnetd and kshell. So there exists:

/etc/xinet.d/ekrb5-telnet (requires encryption)
/etc/xinet.d/ekshell (requires encryption)

Comment 2 Nalin Dahyabhai 2005-09-06 15:50:58 UTC
That sounds good to me.  Adding to 1.4.2-3.

Comment 3 Nalin Dahyabhai 2005-09-06 15:56:39 UTC
Hrm.  I don't think I'm going to get behind changing the "kshell" service from
encrypted to unencrypted though.  That sounds like a nasty surprise, no matter
how well documented it could be.

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