ComStar USA Filtered Access Dial-Up service gives customers the option to activate dial-up accounts, either analog or ISDN, through a filtered access service. Filtered Access provides "Family Friendly" or "G-rated" access control for the end-user. Dial-up customers do not have direct control or override capability for this service, making it secure and safe for consumer use.

StarNet™ maintains all of the applicable access restrictions via an X-Stop™ filter server. This filtering approach removes the filter equipment from any inclusion in the connection path, as the connection never flows through the filter equipment. Instead, it monitors the connections invisibly and filters them without being involved in the connection itself. If the filter equipment were to become inactive for any reason, the network flow proceeds as it normally would, but is unfiltered.

This approach also removes any performance considerations about the filter equipment and the network performance. Since this type of filtering does not require the filter equipment to be included anywhere in the network path physically or logically, there is no chance of the performance of filtered or unfiltered connections being affected in any way by the performance of the filter equipment itself. It is totally transparent to both ends of the network communication. There is no performance change before or after connecting the filter equipment and using it for filtering.