Router Firewalls control inbound and outbound Internet access. They do so by controlling different protocols and ports. A Router Firewall can prevent FT Comm 2 from accessing our servers. They can block your access to getting data. If you cannot connect to our servers or get an Invalid Socket Descriptor error message, the router as well as, any other firewall needs to be investigated. Here are some useful support links to help you resolve the firewall problem. How Routers Work Support for Many Router Brands Support for Wireless Routers Cisco Systems Router Support Linksys Router Support 2Wire Router Support