To help ensure security and stability on the AQnet network and to protect users, ITS has restricted access on the ports listed on this page. These ports have been identified by the National Security Agency as regularly used for malicious hacking attempts at computer networks and are not commonly used for internet browsing. Because of this, most users will not notice that these ports have been restricted. If you have any questions about the restrictions, please call the ITS Help Desk at ext. 2050.