Multiple ip server

Posted on 2006-11-21
Last Modified: 2010-03-17
What if I run my application server on say 5556 port and my machine has 2 ips (2 network interface card). On which ip the 5556 port will bind?

Platform needs some ip to connect to.

How different server reacts in the same situation?

Question by:Shabzt
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Expert Comment

by:Lopo Pegado
ID: 17995091

In IIS you can force the IP wich is used for a WebAplication.

Open the IIS console, right click on the site  (ie Default web Site) of the aplication and choose properties.

On Web Site Tab you have Web site identification on top.

The second box (Ip address by default have (All Unassigned).

If you click on the drop box button you can see the ip's of the machine, just choose the one you want.

Hope it Helps

Best Regards


Author Comment

ID: 18001483
Thanks for your mail

What about other App servers. Or if you develop your own server, how it will react in the same scenario

Expert Comment

by:Lopo Pegado
ID: 18001524

For default, the servers respond to all netword cards they have.

If you wanna to force only to one IP, the best to do its use DNS and use the name to force an IP, If you dont have a DNS Server or the hosts file.


Server001  - 3 Networks cards
IP1 (Administration)
IP2 (Aplication A on port 80)
IP3 (Aplication B on port 80)

DNS or Host Files of client



Author Comment

ID: 18001563

1. So it means if I have one server application running on port 5556 and that machine has two ips, for example, IP1 and IP2, my client application can connect to any ip i.e. IP1:5556 or IP2:5556 by default.

2. Can I run 2 server applications on same port but on different ips (same machine) i.e. application1 on IP1:5556 and application2 on IP2:5556

Accepted Solution

Lopo Pegado earned 500 total points
ID: 18002333

1. Yes, true

2. With IIS you can do that in Apache its possible to but i dont have here instaled atm.
I dont know about other Aplication Servers, but if you specify, i can check it.

Hope it Helps

Best Regards


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