How to configure IIS to use a specific IP in Multi IP configuration server .
There can be times when you want to run apache and IIS simultaneously on your single Server and also on port 80 , in that case the only option is to get an extra ip allotted to your machine and assign each one of them to each server .
Now configuring apache is simple just go to this below link
http://www.codeproject.com/Tips/395286/How-to-Access-WAMP-Server-in-LAN-or-WAN
and for configuring IIS 7 to use 1 IP you will have to explicitly change that , changing binding settings in IIS to specific IP wont work until and unless you reconfigure IIS using this blog post http://support.microsoft.com/kb/954874
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IIS
IIS 1 IP, Multiple IP IIS Apache