Outbound Ports

By default, with most hosting environments, all Outbound ports are open to all, and this is usually acceptable. However, if you wish to tighten security even further, you can restrict access to all of the above ports mentioned (TCP: 443, 1935, 5080, 6262, 8554; UDP: 40000-65535, to Anywhere), plus the MySQL port, 3306 and the default HTTP port, 80.