Dual Public IP's

Posted on 2012-09-17
Last Modified: 2012-10-24
Hi Experts,

I have 2 servers, one exchange and 1 web application. Both of which require 443 to run optimally. However 443 is currently used for exchange. I can get my ISP to configure a second IP but how would I configure it. Can I have 443 on 1 IP go to exchange and 443 on the second IP go to the web server?

What hardware would i need?

Do I need a second phone line installed?

Look forward to reading your comments.
Question by:isdd2000
    LVL 77

    Expert Comment

    by:Rob Williams
    You would need a dual WAN router that supports independent port mapping or you can place a switch between the modem and 2 single WAN port routers
    LVL 7

    Expert Comment

    You need to configure a static NAT for inbound connections like ext.ernal.ip:443 to in.ternal.ip:843 and you need to do the same for your exchange server.

    More info here on a cisco router.

    Author Comment

    Will check it out cheers.
    LVL 16

    Expert Comment


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    Author Comment

    I've currently got a static NAT inplace where 443ex and 443in is for mail then configured 444ex and 443in for the application, but the application has small issues.

    So with a dual WAN router that supports independent port mapping will require a second phone line is that correct?
    LVL 16

    Accepted Solution


    in case of single WAN port router, you can consider Expert Robwill Solution.

    you dont you change application port to 80? and use strong password policy or you can do same for email services as 443 is https port.

    "So with a dual WAN router that supports independent port mapping will require a second phone line is that correct? "-------------YES, you need one more line for ISP connection.

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