On Tue, 2011-07-26 at 13:59 +0200, Tiemen Ruiten wrote:

> I've got a problem routing traffic through a shorewall firewall server: 
> I want to connect two networks, the internal 10.0.0.0/8 of my VPS's at a 
> datacenter and my home 192.168.1.0/24 LAN.
> 
> I've setup a point-to-point (10.42.1.1 <-> 10.42.1.2) OpenVPN connection 
> between my router at home and the shorewall firewall server that should 
> act as a gateway for the zone the other VPS is in. I can ping the gw-VPS 
> on the OpenVPN endpoint and the local 10.0.0.200 interface, I can even 
> ping any host on my home LAN, however I can't connect to the other VPS 
> (with address 10.0.1.75).
> 
> I've attached the output of shorewall dump. Any thoughts? Thanks in advance.
> 
You have defined your dmz network to be enormous:

3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state 
UNKNOWN qlen 1000
    inet 10.0.0.200/8 brd 10.255.255.255 scope global eth1

If 10.0.1.75 has the same VLSM (e.g., it's NIC has address 10.0.1.75/8),
then that host thinks that 10.42.1.2 is on its own LAN and has no idea
that 10.42.1.2 must be routed via 10.0.0.200. So you either must add a
route to 10.42.1.2 via 10.0.0.200 to the VPS's routing table, or you
must come up with a more reasonable IP configuration for your DMZ LAN.

-Tom
-- 
Tom Eastep        \ When I die, I want to go like my Grandfather who
Shoreline,         \ died peacefully in his sleep. Not screaming like
Washington, USA     \ all of the passengers in his car
http://shorewall.net \________________________________________________

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