I do know a little about networking but im having some trouble trying to figure out in my head how to make this work before comcast comes to do the install on thursday.
Right now we have AT&T DSL with one dynamic IP so im using dyndns to run a webpage, a sharepoint site, a helpdesk site, and email all using port forwarding thru a Linksys gigabit wireless router. We have a small domain with about 10 workstations also. We will be getting comcast business class and 5 static IP's
My problem is trying to figure out how to get the computers that will be using the public IP's to be able to talk to our DC which will be behind the linksys router. From what i have been reading i know i could just allow one public IP to pass thru the comcast router to my linksys router and life would go on as normal just as it is now. However, once i take our web server, which needs to talk to the DC because we have some apps that require AD usernames/passwords, and move it out from behind the linksys router to give it one of the public IP's i dont think it will be able to get thru the router to talk to the DC. The DC is also running our DHCP server.
To make this work, would i need to just scrap the idea of using our linksys router and just use the comcast router/gateway? If i did that can i just have the DC give out IP's in our private 192.168.5.* scope, and give out the IP's in the public space as well? does it work like that?
Right now the linksys router only allows me to forward port 80 or 443 to one IP, im assuming the comcast router will allow me to forward 80 thru to whichever public IP its intended to go to?
Sorry if im making this more confusing then it needs to be but i cant figure it out in my head!