I'm newbie in ipfw and natd.
Config like this:
fxp0 - IP public (to my ISP)
fxp1 - IP public 213.216.67.81 (on this IP work www, mail, dns and ftp)
and 10 workstations with public IP conected
fxp1_alias - 192.168.0.1
fxp1 conect to LAN (in LAN 10 workstations from my subnet 213.216.67.80/28 and 150 from 192.168.0.0/24).
In /etc/rc.conf: ... gateway_enable="YES" firewall_enable="YES" #firewall_type="OPEN" firewall_script="/etc/fwrules" natd_enable="YES" natd_interface="fxp0" // is this correct?? natd_flags="-f /etc/natd.conf" ...
/etc/fwrules
fwcdm="/sbin/ipfw"
$fwcdm -f flush
# lo0
$fwcdm add 40 pass all from any to any via lo0 $fwcdm add 41 deny all from any to 127.0.0.0/8 $fwcdm add 42 deny all from 127.0.0.0/8 to any
$fwcdm add 50 divert natd all from any to any via fxp0 $fwcdm add 51 allow tcp from any to me 53 setup $fwcdm add 52 allow udp from any to me 53 $fwcdm add 53 allow tcp from any to me 80 setup $fwcdm add 54 allow tcp from any to me 25 setup $fwcdm add 55 allow tcp from any to me 995 setup
$fwcdm add 60 allow tcp from 192.168.0.0/24 to any 53 setup $fwcdm add 61 allow udp from 192.168.0.0/24 to any 53 keep-state $fwcdm add 62 allow tcp from 192.168.0.0/24 to any 80 setup $fwcdm add 63 allow tcp from 192.168.0.0/24 to any 8074 setup $fwcdm add 64 allow tcp from 192.168.0.0/24 to me 25 setup $fwcdm add 65 allow tcp from 192.168.0.0/24 to me 995 setup $fwcdm add 66 fwd 213.216.67.91,8080 tcp from 192.168.0.0/24 to any 80 $fwcdm add 67 deny all from 192.168.0.0/24 to any
$fwcdm add 80 allow tcp from 213.216.67.80/28 to any 53 setup $fwcdm add 81 allow udp from 213.216.67.80/28 to any 53 keep-state $fwcdm add 82 allow tcp from 213.216.67.80/28 to any 80 setup $fwcdm add 83 allow tcp from 213.216.67.80/28 to any 8074 setup $fwcdm add 84 allow tcp from 213.216.67.80/28 to me 25 setup $fwcdm add 85 allow tcp from 213.216.67.80/28 to me 995 setup $fwcdm add 86 allow tcp from any to 213.216.67.92 113 setup $fwcdm add 87 allow tcp from 213.216.67.92 to 150.254.64.64 6667 $fwcdm add 88 deny all from 213.216.67.80/28 to any
$fwcdm add 65000 deny log ip from any to any
And now question: Is this rules OK?
I don't connect server to internet before check rules.
So if anybody can tell me what could i change, i do this. Or is this correct, and i can put server to internet.
All man and how-to talk about 1 public and 1 private IP so i don't know what put in rules.
Is anybody can help me?
Thank you, Arek
P.S. My english is awful, sorry.
-- Arek Czereszewski | jid: aro(at)chrome.pl arek(at)wup-katowice.pl | gg: 1349941 "*nix is like a wigwam: no windows, no gates, apache inside."
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