I have just purchased a Draytek 2820Vn and am having problems with a DMZ host.
Local Lan is 172.16.17.0/27 (ie. netmask 255.255.255.224).
DHCP starts at 172.16.17.2 through to the max allowed hosts for that subnet.
I have a configured host inside my lan, and have bound the mac address of it to 172.16.17.25.
I have configured 172.16.17.25 as the DMZ Host on my lan. The host at 172.16.17.25 is another firewall that creates its own VPN with an external host on the internet via the DSL router.
I have turned off the 2820's VPN settings to allow passthrough of VPN traffic.
The DMZ host does not seem to be able to communicate back out to the VPN partner on the internet.
I have this exact same config on a Billion 7402 and a Dynalink RTA1046 and it works fine.
What am I missing with the Draytek? There must be a config inside the draytek that I've not set up right.
I am using Australian firmware 3.3.0.
Draytek have a live web demo of their 2820 firmware here: http://www.draytek.com/demo/Vigor2820/index.htm