Technical problems and solutions:
When you’re using ICS and you have an application with many ports and protocols, you will have to repeat steps 3 through 6 for every port and protocol that the application need. There is no specifying a range; this makes ICS a hassle to work with.
If you follow my other guide and you’re behind a router, you will probably need to configure your router to port forward the ports to the host computer, which in turn should take that request and port forward to the client.
A little problem I've been hearing about, for those of you who have D-Links router and any router that assigns a LAN address in the 192.168.0.0 network please use a different network other than this for your ICS connection for example:
ISP===Router===192.168.0.0 network===computer1===192.168.50.0 ICS====computer2.
You'll need to use something other than 192.168.0.1 in my guide, like maybe 192.168.50.1 or 192.168.100.1 just so it doesn't conflict with the existing router.
Linksys are known to use 192.168.1.0 network
D-Link are known to use 192.168.0.0 network
Belking are known to use 192.168.2.0 network
Netgear are known to use 192.168.1.0 network