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How to DMZ in Cisco ASA 5520?

Posted on 2007-10-17
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What is a DMZ. We are upgrading our Router to a Cisco ASA 5520. The mail server and the FTP server are in a DMZ. I would like to know how to setup a DMZ. Do you setup  a DMZ by telling the router that one of the ports on the router is a DMZ or do you setup a DMZ based on the server address behind the firewall. Whats the difference of just putting the servers behind the ISPs router than the ASA 5520.

Thank you,
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Question by:netcomp
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Pete Long earned 2000 total points
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Firstly a 5505 is NOT a router its a statefull firewall :) though it can provide routing functionality

>>Do you setup  a DMZ by telling the router that one of the ports on the router is a DMZ

Yes you set a particular interface as the DMZ port - give it a sensible name like DMZ and a security number (like 50 - so its less than the outside interface=100 and more than the inside interface=0) then you allow traffic from the DMZ to either the outside world or the "inside" network as required.

mail server in the DMZ how to set up
http://www.cisco.com/en/US/products/hw/vpndevc/ps2030/products_configuration_example09186a00806745b8.shtml

As for FTP the config is the same but you allow FTP as well as smtp :)

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by:netcomp
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Ok thanks for the link, I read up the link and I am not clear. Can someone give me the sample commands and tell me how it works.
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by:Pete Long
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What IP addresses do you want to use?
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ThanQ
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