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From: John Murphy <sub01@freeode.co.uk>
To: questions@FreeBSD.ORG
Date: Sun, 14 Nov 2004 13:42:19 +0000
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Subject: Re: Natd/Gateway=yes vs 5.3
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Francisco Reyes wrote:

>Migrating a 4.10 box.
>Copied data to a second drive.
>Installed 5.3
>Changed kernel to add
>
>options         IPFIREWALL
>options         IPFIREWALL_VERBOSE
>options         "IPFIREWALL_VERBOSE_LIMIT"=50
>options         IPDIVERT
>
>In /etc/rc.conf have
>firewall_enable="YES"
>firewall_logging="YES"           # Set to YES to enable events logging
>firewall_quiet="NO"
>firewall_type="open"
>gateway_enable="YES"
>natd_enable="YES"               # Enable natd (if firewall_enable == YES).
>natd_flags="-f /etc/natd.conf"  # Set rules file for the NAT daemon
>natd_interface="ed0"

I've been reading the (excellent) firewall section of the handbook at:
http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/firewalls.html

Section 14.9.6.3 /etc/rc.conf Options says:
If you don't have IPFW compiled into your kernel you will need to
load it with the following statement in your /etc/rc.conf:

firewall_enable="YES"

Perhaps you have two ipfws, the kld and the one in the kernel.

Section 14.9.6.5.7 An Example NAT and Stateful Ruleset says:
The kernel source needs 'option divert' statement added to the other
IPFIREWALL statements compiled into a custom kernel.

So I guess that supersedes your "options IPDIVERT" entry.

-- 
HTH, John.