Configuring a DMZ

Posted on 2004-11-02
Last Modified: 2010-04-09
Helloo all !

I need to configure a DMZ with a Zywall 35.

I have a public IP

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

Question by:s2000_com
    LVL 9

    Expert Comment

    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.

    Author Comment

    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 ?

    LVL 9

    Accepted Solution

    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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