Great Circle Associates Firewalls
(November 1996)
 

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Subject: Re: Firewalls-Digest V5 #608
From: Kyle Mallory <kmallory @ telcom . utah . edu>
Organization: University of Utah, Telecommunications
Date: Fri, 08 Nov 1996 12:59:54 -0700
To: Firewalls @ GreatCircle . COM
References: <199611072145 . NAA21319 @ miles . greatcircle . com>

>Date: Thu, 07 Nov 1996 13:22:49 +0300
>From: Lawrence Beobachter <larry @
 spmu .
 runnet .
 ru>
>Subject: Plain-text passwords
>
>Hello!
>
>I tried tcpdump on FreeBSD and it turned out that login information
>during telnet sessions as well as USER and PASS info sent by pop-client
>are both xmitted in plain text <shudder>.
>Is there any solution besides S/Key (please, include pointers) to
>block this don't-know-how-to-call-it hole.
>
>Thank you
>Regards
>

POP is supposed to allow for an MD5 encrypted password, but a majority
of POP3 servers do not support it.  This is something I have always
had a problem with myself..  Telnet is a little different, because
there are no logon (authentication) schemes like there are in POP3.

Basically, every character you type, is sent across the network, you
can actually telnet into a POP3 server... Just telnet into port 110.

FTP is just as relaxed as POP3...  Unfortunately a large majority of
the older protocols send passwords in clear text.  IMHO Something
should be done to clean this up, and soon.

-- 
------------------------------------------------------------------------
Kyle Mallory             | What would happen if a big asteroid hit the
DNS Manager, Telcom      | Earth?  Judging from realistic simulations
University of Utah       | involving a sledge hammer and a common
Voice: (801) 585-9867    | frog, we can assume it will be pretty bad.
Pager: (801) 241-2183    |
kmallory @
 telcom .
 utah .
 edu |                            -- Dave Barry
------------------------------------------------------------------------


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