I'm trying to build a firewall from scratch using man ipfw and what I
can find on the net. I'm doing bandwidth shaping and I'm not quite sure
where it goes as far as rule numbers. From what I can see, it matters
and I'd like to do it right. I'm using an OPEN firewall with NATD
because I'm on cable broadband with a static IP. Here is what I have.
00010 52 2446 pipe 1 ip from 172.16.140.0/24 to any xmit re0
00020 0 0 pipe 2 ip from any to 172.16.140.0/24 recv re0
00050 274 24955 divert 8668 ip from any to any via re0
00100 50 5642 allow ip from any to any via lo0
00200 0 0 deny ip from any to 127.0.0.0/8
00300 0 0 deny ip from 127.0.0.0/8 to any
65535 4658 547779 allow ip from any to any
The actual rule set for the bandwidth shaping is:
# Traffic Shaping.
# oif="re0" # ${oif} Public Interface.
# iif="re1" # ${iif} Internal nic.
# iip="172.16.140.0/24" # ${iip}
${fwcmd} add 10 pipe 1 all from ${iip} to any xmit ${oif}
${fwcmd} pipe 1 config mask src-ip 0xffffff00 bw 35Kbits/s queue 40Kbytes
${fwcmd} add 20 pipe 2 all from any to ${iip} recv ${oif}
${fwcmd} pipe 2 config mask dst-ip 0xffffff00 bw 4000Kbits/s queue 40Kbytes
I've found lots of stuff on "how" to set it up but I can't seem to find
anything on where the rules go. Any help would be greatly appreciated.
Regards,
Mark
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