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Configuring a DMZ

Helloo all !

I need to configure a DMZ with a Zywall 35.

I have a public IP 212.xxx.xx.xx.

My LAN is now with Private IP in Class A ( and

I want to put a server ( in the DMZ but I don't understand how to configure my firewall ?

I need to do a NAT it seems ! Perhaps put this server on an other network like ?

What about the subnet ?

Thanks a lot

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1 Solution
It needs to be a different subnet. your mask of means everything 10.x.x.x is on the same network.
Setup your DMZ as something like 172.16.1.x or 192.168.1.x utilizing a mask
As far as the config of Zywall, I can't help. Wish you luck with it.
s2000_comAuthor Commented:
Thanks TannerMan !

I have only one public IP.

If I put the webserver and the exchange front-end serveur in the DMZ, how many public IP I need ?

I am not a Zywall guru, but you need only ONE external IP address. Then, inside of Zywall you would do port mapping like.........

port 80/443 goes to (web server)
ports 25/110 goes to 172.16.3 (exchange server)

and so on.....

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