Hi. Have the same problem, but with wlan. With rule like below
Ipfw add deny log all from any to any
i do not see any packets in ipfw -d show output.
LAN behind wlan interface gets ip-addr, but inet is blocked, of course.
----
Vitaliy
--- Original Message ---
From: "Olivier Cochard-Labbé"
Date: 5 January 2015, 12:33:46
> I'm using a pretty simple configuration:
>
> My rc.conf:
> ifconfig_sis0="DHCP"
> firewall_enable="YES"
> firewall_logging="YES"
> firewall_script="/etc/ipfw.rules"
>
> My /etc/ipfw.rules:
> #!/bin/sh
> fwcmd="/sbin/ipfw -q".
> ${fwcmd} -f flush
> ${fwcmd} add pass ip from any to any via lo0
> ${fwcmd} add deny log ip from any to any
>
> But after a reboot this machine is still able to get an IP address by DHCP
> and nothing (related to DHCP) is logged on the firewall:
>
> [root@wrap]~# ifconfig sis0
> sis0: flags=8843 metric 0 mtu 1500
> options=83808
> ether 00:0d:b9:02:76:58
> inet 192.168.100.68 netmask 0xffffff00 broadcast 192.168.100.255
> media: Ethernet autoselect (100baseTX )
> status: active
>
> [root@wrap]~# ipfw show
> 00100 0 0 allow ip from any to any via lo0
> 00200 4 1631 deny log ip from any to any
> 65535 0 0 deny ip from any to any
>
> [root@wrap]~# cat /var/log/security
> Jan 1 01:16:45 wrap newsyslog[923]: logfile first created
> Jan 1 01:17:18 wrap kernel: ipfw: 200 Deny UDP 192.168.100.254:138
> 192.168.100.255:138 in via sis0
> Jan 1 01:17:18 wrap kernel: ipfw: 200 Deny UDP 192.168.100.254:138
> 192.168.100.255:138 in via sis0
>
> I've got the same behavior on FreeBSD 8.2 and 11.0-CURRENT r275821.
>
> Are DHCP packets exluded from the filtering/logging engine of ipfw ?
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