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Date:      Fri, 21 Jul 2000 01:17:38 +0200 (CEST)
From:      Arjan de Vet <Arjan.deVet@adv.iae.nl>
To:        FreeBSD-gnats-submit@freebsd.org
Subject:   conf/20075: option IPFILTER_DEFAULT_BLOCK not in LINT (ipfilter)
Message-ID:  <20000720231738.A01E522E3@adv.iae.nl>

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>Number:         20075
>Category:       conf
>Synopsis:       option IPFILTER_DEFAULT_BLOCK not in LINT (ipfilter)
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          change-request
>Submitter-Id:   current-users
>Arrival-Date:   Thu Jul 20 16:20:02 PDT 2000
>Closed-Date:
>Last-Modified:
>Originator:     Arjan de Vet
>Release:        FreeBSD 4.1-RC i386
>Organization:
-
>Environment:

FreeBSD adv.iae.nl 4.1-RC FreeBSD 4.1-RC #31: Thu Jul 20 18:50:34 CEST
2000     root@adv.iae.nl:/usr/src/sys/compile/ADV  i386

>Description:

Option IPFILTER_DEFAULT_BLOCK is not listed in LINT. It makes ipfilter
block all packets by default which I consider a very useful option from
a security point of view: failing to load filter rules will deny any
network traffic instead of allowing all traffic.

>How-To-Repeat:

-
>Fix:

Index: LINT
===================================================================
RCS file: /home/freebsd/CVS/src/sys/i386/conf/Attic/LINT,v
retrieving revision 1.749.2.17
diff -u -r1.749.2.17 LINT
--- LINT	2000/07/20 19:07:02	1.749.2.17
+++ LINT	2000/07/20 23:11:23
@@ -536,6 +536,7 @@
 options 	IPDIVERT		#divert sockets
 options 	IPFILTER		#ipfilter support
 options 	IPFILTER_LOG		#ipfilter logging
+options 	IPFILTER_DEFAULT_BLOCK	#block all packets by default
 options 	IPSTEALTH		#support for stealth forwarding
 options 	TCPDEBUG
 


>Release-Note:
>Audit-Trail:
>Unformatted:


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