To ensure users have access to a Cornerstone server newly installed on the internal LAN without endangering the computers linked through the LAN, use port forwarding on the firewall to direct the TCP/IP traffic to the proper computer. Port forwarding is used by most routers/firewalls. Put simply, port forwarding literally forwards data incoming on a specific port to the same port on a different computer.


During port forwarding, the firewall will redirect traffic to the Cornerstone server based on IP address.Therefore, the LAN computers must use a static IP address the firewall can always refer to. If the Cornerstone Server’s IP address is DHCP (Dynamic Host Configuration Protocol) based, the firewall could forward the data to the wrong computer.


For more detailed information on setting up a static IP or other configuration information for Cornerstone and firewalls, see our Cornerstone Servers and the Corporate Firewall QuickStart.