Firefox Reserved Ports Restricted For Security Reasons
| Posted by watashii | Filed under Software
When browsing to web sites based on non standard HTTP ports, such as port 636 for LDAP SSL, Firefox bans access with the above message. By default, a number of ports are blocked from access due to a number of potential security vulnerabilities. These banned ports are usually reserved for specific services and are not ideal for web browsing.
To unblock these ports, we can specify the network.security.ports.banned.override preference in about:config. This is a new preference inside about:config, so right-click on the screen and create a new String preference to the port you want to allow access. You can also specify a range instead of a single port number, such as 1-1024. Just a word of warning, unblocking ports will pose a security risk.
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