2 wans, 1 lan how to connect and secure

January 4, 2011 at 18:25:55
Specs: win2k3
Ok here goes (tell me if this is possible) I have a ISA 2006 server with a static WAN IP that runs our Office, 2 DC's (1 file server), One sharepoint, and 20 Desktops, In the same rack i have a webserver with its own static WAN IP NOT connected to the Local network (to keep it secure and keep Users from using that as web access). The cable modem has 2 ip's. that goes to a switch , one leg feeds the ISA which in turn feeds the LAN switch. the other leg feeds the webserver. Is it possible to connect the Webserver to the LAN, but keep the WAN IP and not allow users to use that connection to the internet. ( keep all internet traffic going through the ISA ) but allow the webserver to transfer backups and such to the File Server on the LAN. FYI: the Webserver has 4 NIC's

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#1
January 5, 2011 at 08:25:34
You would connect one of the web servers nics to the intranet and give it a local ip with no gateway.

Users would not be able to gain internet access thru the server unless you engage RRAS.

Be aware that you have now created a path a hacker can use via the web server to get to your intranet.

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#2
January 5, 2011 at 08:56:01
Yes thats what i was thinking. I hooked it up like that this morning. and checked with a Tracert All LAN traffic is flowing through the ISA and the Webserver is only using its WAN to go in and out. I have a sonicwall in place before the WebServer hits the Internet. So fingers Crossed.

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#3
January 5, 2011 at 09:54:36
Sonicwalls are great so no worries there

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