Port 81

Modified by:

Port 81 is an alternative HTTP port used for web traffic, commonly used for testing and development purposes. It can also be used as a backup port, in case the standard HTTP port 80 is unavailable or blocked by a firewall.

Ports those registered with IANA are shown as official ports. The same port number may be unofficialy used by various services or applications. The official usage are listed separately below its usage may change from time to time.

Official

Port Protocol (TCP/UDP) Title Description Port Type

UnOfficial

Unofficialy or sometimes with conflict, the same port may be used by different applications.

Port Protocol (TCP/UDP) Description
Port 81 Torpark�Onion routing
TCP UDP Ports
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Port 1679
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Port 1868
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Ports 4100 – 4200
Port 4100- Port 4200 Port 4200- Port 4300 Port 4300- Port 4400 Port 4400-
Port 2017
Ports those registered with IANA are shown as official ports. The same port number
Port 8206
Ports those registered with IANA are shown as official ports. The same port number
Port 1970
Port 1970 is not a well-known or assigned port number and is not registered
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