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Date:      Mon, 18 Feb 2002 10:22:03 +0200
From:      "Patrick O'Reilly" <patrick@mip.co.za>
To:        "FreeBSD Question List" <freebsd-questions@freebsd.org>
Subject:   Gateway server "hanging"
Message-ID:  <NDBBIMKICMDGDMNOOCAIGEPOEBAA.patrick@mip.co.za>

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Hello everyone!

Something I've never seen before happened yesterday - a FreeBSD
gateway/firewall server "hanging" ?!?

The server is running ipfw and natd, and it handles routing between 6
private networks, and one Internet connection.  It runs sshd (so I can
do remote support), and net-snmp (so I can monitor it with mrtg).

Apart from these services, it does NOTHING ELSE!

Yesterday evening it appeared to "hang".  An on-site operator reported
that the keyboard would not even respond to the num-lock key.
Ctl-Alt-Del was also ignored.  We were forced to cycle the power!

The last messages in /var/log/messages before the reboot were these:
-------------------------
Feb 17 18:22:39 perimeter natd[506]: failed to write packet back
(Permission denied)
Feb 17 18:23:03 perimeter last message repeated 3 times
Feb 17 18:24:46 perimeter /kernel: 8.223:22 in via xl0
Feb 17 18:51:11 perimeter /kernel: Copyright (c) 1992-2001 The FreeBSD
Project.
-------------------------

I understand the natd errors, but that "/kernel: 8.223:22 in via xl0" is
foreign to me. (xl0 is the NIC facing the Internet).

Any clues anyone?

PS: This server is 4.3 RELEASE.  Perhaps an update would be in order?

Regards,
Patrick.


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