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How do I host multiple physical Web servers behind a single IP address?

Posted on 2014-02-24
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Last Modified: 2014-05-13
I need to host multiple physical web servers behind a single IP address. The web servers use Apache. I have a Cisco ASA 5505 firewall, the servers will reside in the DMZ of this firewall.

I have 4 public IP address for this site. One is the the router, the other is the outside interface of the firewall. Giving me only 2 public IP address to host 6 web servers.

Thanks, Greg
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Question by:gpr130
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6 Comments
 
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becraig earned 1500 total points
ID: 39882795
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Expert Comment

by:Jan Springer
ID: 39882895
The ASA will need the static NAT for the webserver and in apache, you will use the VirtualHost section to configure each webserver.
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Expert Comment

by:ffleisma
ID: 39882906
you can use port forwarding basically

certain ports pertain to a particular server. will all these 6 be web servers? can you specify use of each server why it needs published IP?

ex:
x.x.x.x:80 --> web server
x.x.x.x:25 --> mail server

etc

if you have multiple web servers, then you might map the same public IP but different ports to each web servers. you'll need to setup the servers to accept those ports as well.

what ASA version are you running?
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by:Jan Springer
ID: 39882915
Using one IP address and apache VirtualHosts means that he doesn't have to and shouldn't use port forwarding.
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Author Comment

by:gpr130
ID: 39885591
All of the server will be web servers. I am running version 8.2(1) on my Cisco ASA. Looks like Apache VirtualHost is the way to go, but I did not want to get the web admins to involve with this project.  I wish I could host the web server using one IP address just using the ASA.

Thanks, Greg
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by:becraig
ID: 39896398
No matter the Network approach you take, the web admins will have to be involved to some extent since SSL configurations etc will have to be handled at that level.
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