Bryan,

The devil was in the details, particularly the fact that your
external interfac uses an RFC 1918 address...

On Mon, 20 Jan 2003 14:32:06 EST Bryan Payne wrote:


> # ip addr show
    [..]
> 3: eth0: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast qlen 100
>     link/ether 00:a0:24:e4:66:ea brd ff:ff:ff:ff:ff:ff
>     inet 192.168.0.4/24 brd 192.168.0.255 scope global eth0
> 4: eth1: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast qlen 100
>     link/ether 00:a0:cc:57:e7:a1 brd ff:ff:ff:ff:ff:ff
>     inet 192.168.1.254/24 brd 192.168.1.255 scope global eth1

> Here's what the problem is:
> 
> Jan 20 11:40:49 firewall kernel: Shorewall:man1918:DROP:IN=eth0 OUT=
> MAC=00:a0:24:e4:66:ea:00:30:ab:06:6c:9c:08:00 SRC=128.8.129.2
> DST=192.168.0.4 LEN=64 TOS=0x00 PREC=0x00 TTL=56 ID=17230 DF PROTO=TCP
> SPT=22 DPT=39534 WINDOW=25920 RES=0x00 ACK SYN URGP=0

Notice the rule that was hit:  "Shorewall:man1918".  Do you have
the "norfc1918" option set for eth0 in /etc/shorewall/interfaces ?

E.g.:

  net     eth0            detect          dhcp,routefilter,norfc1918
                                                           ^^^^^^^^^
which is the Bering 1.0-stable default I believe.

--Brad



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