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Add another good book to the required reading.

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make a couple of rules more sensible.

Reviewed by:	phk
Submitted by:	jmb
This commit is contained in:
Poul-Henning Kamp 1996-04-12 09:16:42 +00:00
parent 726722154d
commit 86c81cd529
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=15210
1 changed files with 11 additions and 3 deletions
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14
etc/rc.firewall
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@ -1,6 +1,6 @@
############
# Setup system for firewall service.
# $Id$
# $Id: rc.firewall,v 1.1 1996/04/03 17:13:58 phk Exp $
############
#
@ -13,6 +13,14 @@
# If you don't know enough about packet filtering, we suggest that you
# take time to read this book:
#
# Building Internet Firewalls
# Brent Chapman and Elizabeth Zwicky
#
# O'Reilly & Associates, Inc
# ISBN 1-56592-124-0
#
# For a more advanced treatment of Internet Security read:
#
# Firewalls & Internet Security
# Repelling the wily hacker
# William R. Cheswick, Steven M. Bellowin
@ -50,7 +58,7 @@ if false ; then
/sbin/ipfw add pass all from ${net}:${mask} to ${ip}
# Allow TCP through if setup succeeded
/sbin/ipfw add deny tcp from any to any established
/sbin/ipfw add pass tcp from any to any established
# Allow setup of incoming email
/sbin/ipfw add pass tcp from any to ${ip} 25 setup
@ -103,7 +111,7 @@ if false ; then
/sbin/ipfw add deny all from 10.0.0.0:255.0.0.0 to any via ${oif}
# Allow TCP through if setup succeeded
/sbin/ipfw add deny tcp from any to any established
/sbin/ipfw add pass tcp from any to any established
# Allow setup of incoming email
/sbin/ipfw add pass tcp from any to ${oip} 25 setup