38Using the Configuration Utility (continued)To maintain an adequatelevel of security, each clienton the network can bemanaged. To allow somedevices to be unmanaged,input their IP addresses orMAC addresses in thisinterface. Up to 20 IP ad-dresses and 10 MAC ad-dresses can be assignedunmanaged access. MACaddress format isXX:XX:XX:XX:XX:XXAdvanced > Pass-ThroughCaution: Allowing unmanaged access from specific IP or MACaddresses could adversely affect the security of your network.Advanced > Virtual ServerThis feature allows you todefine up to 10 virtualservers to enable access toservers connected to theauthentication and localnetwork port from outside ofthe managed network.Depending on the serviceprovided, the service mightrun on TCP ports, UDP portsor both. Click Enable toactivate the rule. Changes tothe settings of virtual serverswill take effect immediatelyafter you click the Applybutton.Note: Each local server connected to the authentication port must also be allowed IPor MAC address pass-through. Please enter its IP or MAC address via the interfaceshown in the pass-through configuration screen.