![]() If your product or web site uses a port which is blocked by Mozilla's default If a user attempts to access a URI on a blocked port, Mozilla will issue theĪccess to the port number given has been disabled for security reasons. Port blocking can cause problems if a site or web application requiresĪccess to one of the ports which is blocked in Mozilla. Potential Problems caused by Port Blocking Override this blocking for itself in order to enable the required access for that Vulnerabilites due to "Cross-Protocol Scripting". How to Change Mozilla port blocking permanentlyįor a "Cross-Protocol" scripting attack, known as the HTMLįorm Protocol Attack which allowed sending arbitrary data to most TCP ports.Ī simple exploit of this hole allows an attacker to send forged unsigned mail throughĪ mail server behind your firewall: A really nasty hole.īy modifying how protocols can access ports.īy default, Mozilla now blocks access to specific ports which are used by vulnerable.Modifying Mozilla's port blocking at Run Time.Potential Problems caused by Port Blocking.
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