From owner-freebsd-stable@FreeBSD.ORG  Mon Oct 22 08:58:40 2007
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Date: Mon, 22 Oct 2007 10:39:02 +0200
From: Marian Hettwer <mh@kernel32.de>
To: Squirrel <squirrel@mail.isot.com>
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Cc: freebsd-stable@freebsd.org
Subject: Re: Closed Port, Need to Reopen
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Hi Squirrel (odd name that is...),

On Sun, 21 Oct 2007 14:54:53 -0500, Squirrel <squirrel@mail.isot.com> wrote:
> For some reason, my port 1645 is closed on FreeBSD 6.2.  I have all the
> firewall disabled, but it's not allowing me access the port 1645.  How do
> you manually open this port?  I can't seem to find at google.
What exactly is your question? You need a daemon listening on port 1645. By the way, tcp or udp port 1645?
What is the "sockstat -4 | grep 1645" ?

If there's no output at all, then no daemon is listening on port 1645, which also means you don't get a connection to 1645.

According to /etc/services:
[mhettwer@blowfish] <~>grep 1645 /etc/services                                                                                                                         [10:37:36 on 07-10-22]
# IMPORTANT NOTE: Ports 1645/1646 are the traditional radius ports used by
#radius		1645/udp   #RADIUS authentication protocol (old)
# IMPORTANT NOTE: See comments for ports 1645/1646 when using older equipment
[mhettwer@blowfish] <~>                                                                                                                                                

Do you want to run a radius server?

regards,
Marian