As an ISP we would like to allow our subscribers as much freedom to the content on the web as possible. Unfortunately, virus proliferation has forced to block some ports to minimize the impact to our customers. We have tried to keep this list to a minimum and will continue to assess the dangers of opening and closing future ports. If you require access to an application that uses these ports we can work with you, please contact us at support@wispertel.com for questions or concerns. Thanks.

Currently Blocked TCP Ports: 25*, 135, 136, 137, 138, 139, 445, 593, 2001, 2280, 2281, 2282, 2283, 2284, 2285, 4444.

Currently Blocked UDP Ports: 123 (NTP), 445, 995, 996, 997, 998, 999, 8998, 1555, 2001 2280, NetBIOS-ns and NetBIOS-dgm, and NetBIOS-ss.

*Please note that because of spam, virus and other trojan horse issues, we have been forced to block outbound port 25 SMTP or Outgoing Mail traffic on our system to all servers except our mail server.  If you are on our network, our mail server will allow you to send through it.   If you are a static or routable IP address customer, this will not affect you.