Date: Tue, 17 Dec 2002 16:00:54 -0700 From: "Aaron D. Gifford" <agifford@infowest.com> To: freebsd-current@freebsd.org Subject: 5.0-RC1 /etc/rc.d/ipfw script and NAT Message-ID: <3DFFACA6.8000000@infowest.com>
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Hi,
There's trouble in the /etc/rc.d/ipfw script in how it changes things
versus the 4.7 /etc/rc.network script when it comes to NAT in certain
configurations.
For example, on my home gateway box, rc.conf contains:
# Network address translation:
natd_enable="YES"
natd_interface=""
natd_flags="-f /etc/natd.conf"
Notice that I deliberately do NOT list any interfaces because I am using
an explicit configuration file (the "-f /etc/natd.conf" flags). Under
4.7-STABLE, the natd daemon will be started appropriately even though
the natd_interface variable is empty, so long as natd_enable is "YES"
and so long as I am smart enough to have some sort of configuration
available to natd.
Under 5.0-RC1, /etc/rc.d/ipfw makes a 2-line change, moving the lines
that actually start the natd daemon up inside of an if statement. This
means folks like myself who use an explicit configuration file (i.e. I
don't run natd on any one specific interface - I run it inbound on one
interface, outbound on another using a custom ipfw ruleset and natd
configuration file) cannot have natd auto-start without changing
/etc/rc.d/ipfw or starting it by hand somewhere else.
May I request that the two lines in /etc/rc.d/ipfw that start natd be
moved down a few lines outside of the enclosing "if" block so that the
functionality many of us -STABLE users are accustomed to may be
returned? If not, can anyone shed some light on why it's a bad idea and
offer any suggestions to me? (I like to make as few changes to my BSD
box as possible to have it run how I want it to.)
Thanks!
Aaron out.
----- NATD section of /etc/rc.d/ipfw as I would like to see it -----
# Network Address Translation daemon
#
if checkyesno natd_enable; then
if [ -n "${natd_interface}" ]; then
if echo ${natd_interface} | \
grep -q -E '^[0-9]+(\.[0-9]+){0,3}$'; then
natd_flags="$natd_flags -a ${natd_interface}"
else
natd_flags="$natd_flags -n ${natd_interface}"
fi
fi
echo -n ' natd'
${natd_program:-/sbin/natd} ${natd_flags} ${natd_ifarg}
fi
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