Date: Thu, 10 Apr 1997 01:52:09 GMT From: Adam David <adam@veda.is> To: FreeBSD-gnats-submit@freebsd.org Subject: kern/3244: ipfw flush closes connections Message-ID: <199704100152.BAA08167@veda.is> Resent-Message-ID: <199704100140.SAA03419@freefall.freebsd.org>
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>Number: 3244
>Category: kern
>Synopsis: ipfw flush closes connections
>Confidential: no
>Severity: serious
>Priority: high
>Responsible: freebsd-bugs
>State: open
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Wed Apr 9 18:40:01 PDT 1997
>Last-Modified:
>Originator: Adam David
>Organization:
Veda Internet
>Release: FreeBSD 3.0-CURRENT i386
>Environment:
ipfw used as a filtering firewall component
>Description:
When ipfw is used to flush previously established rules, (it seems)
all tcp connections open at the time become closed. Since flush is
typical at the beginning of ipfw scripts and applies to rules not
connections, this behaviour is wrong. Several months ago, it was
possible to circumvent it (at least in part) by running /sbin/ipfw
as a background process, but no longer.
>How-To-Repeat:
sh /etc/rc.firewall
>Fix:
none known
>Audit-Trail:
>Unformatted:
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