UAAC Protocol ?

From: Clarke, Suzy (
Date: 06/26/02

From: "Clarke, Suzy" <>
Date: Wed, 26 Jun 2002 09:42:46 +0100

Hi all,

Last year the XC telnetd worm infected machines running the BSD based telnet
daemon. Amongst other things it installed a rootshell backdoor on TCP port

This port is reserved for a service called "UAAC" [it's defined by default
in FreeBSD's /etc/services file]
Does anyone have any idea what it's legitimately used for?

I've checked the RFCs and done a Google search but they haven't turned up
anything. In several port listings a David Gomberg at Mitre
[] is listed as the contact for this service but
mail to that address bounces. I was also referred to him by IANA. Does
anyone have an alternate email for him?

I contacted Ryan Russell at Sec Focus as he did the original XC worm
analysis but he doesn't know what UAAC is used for either.

If you've got any ideas or info please let me know.

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