NIS and udp listening

From: Mike Burgett (mburgett@awen.com)
Date: 10/16/01 

From: "Mike Burgett" <mburgett@awen.com>
To: "security@freebsd.org" <security@freebsd.org>
Date: Tue, 16 Oct 2001 08:00:50 -0700

Sorry if this is the wrong forum. I've looked in the archives, and
didn't see anything about this.

I'm running NIS client/server on a 4.4-RELEASE box, and I seem to
get a udp port per server (most in the <= 1024 range, though I've
seen some higher) opened and listening:

nobody httpd 360 5 udp4 *:968 *:*
root sendmail 272 4 udp4 *:973 *:*
root named 205 14 udp4 *:1024 *:*

When I disable NIS, this goes away.

Is this normal? Would someone please be kind enough to point me to
the FM I should be R'ing?

Thanks,
Mike

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