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Date:      Tue, 19 Mar 2002 15:11:37 GMT
From:      "Julian Stacey" <jhs@bim.bsn.com>
To:        freebsd-security@freebsd.org
Subject:   	ports 1021 1022 1023 & 587 ?
Message-ID:  <200203191511.g2JFBbG55810@jhs.muc.de>

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On a 4.5-RELEASE firewall ports 1021 1022 1023 are shown open by
/usr/ports/security/portscanner, but not listed in /etc/services.

Are they daemons doing auto decrement allocation from 1024 ?
  ( I'm using ipfw firewall, not using diverts (yet), not using X server,
  am using various other daemons inc. nfs amd lpd timed whod etc)

Should I block some 1023 port range with ipfw on non {localhost & local
 ethernet} interfaces ? What range ?

submission=587 is also open.

Could someone please remind me the name of a command to back trace
the port to whatever's opened it ? Would it be a good idea to add
a commented hint at entry 1023 of /etc/services ?

Julian Stacey		Munich Unix (FreeBSD, Linux etc) Independent Consultant
jhs@bim.bsn.com		Free software:  http://bim.bsn.com/~jhs/free/
	Ihr Rauchen = mein allergischer Kopfschmerz !  Schnupftabak probieren !

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