# Web : Browsers #### Restricted Ports *In the 1024-9999 range.* **Mozilla** - 1719 — h323gatestat - 1720 — h323hostcall - 1723 — pptp - 2049 — nfs - 3659 — apple-sasl - 4045 — lockd - 4160 — sieve - 5060 — sip - 5061 — sips - 6000 — x11 - 6566 — sane-port - 6665 — irc (alternate) - 6666 — irc (alternate) - 6667 — rc (default) - 6668 — irc (alternate) - 6669 — irc (alternate) - 6679 — osaut - 6697 — irc+tls - 10080 — amanda > [!NOTE] To Disable Restrictions > Go to `about:config`, search for setting `network.security.ports.banned.override`, create as string with value "0-65535". **Chrome** - 2049 — nfs - 3659 — apple-sasl / PasswordServer - 4045 — lockd - 6000 — X11 - 6665 — Alternate IRC [Apple addition] - 6666 — Alternate IRC [Apple addition] - 6667 — Standard IRC [Apple addition] - 6668 — Alternate IRC [Apple addition] - 6669 — Alternate IRC [Apple addition] **References** - https://reddit.com/r/firefox/comments/ttms50/since_when_was_this_a_thing_in_firefox_trying_to/ - https://neo4j.com/developer/kb/list-of-restricted-ports-in-browsers/ - https://searchfox.org/mozilla-central/source/netwerk/base/nsIOService.cpp#106 - https://en.wikipedia.org/wiki/List_of_TCP_and_UDP_port_numbers