Port Authority Edition – Internet Vulnerability Profiling
by Steve Gibson,  Gibson Research Corporation.





Goto Port 81
Probe Port 82
Enter Port: 0-65535
Goto Port 83



Port Authority Database

Port 82

Name: 
xfer

Purpose: 
XFER Utility

Description: 
We have no idea what this port's historical use was, and neither, apparently, does anyone else. It is listed (as shown above) on everyone's "port list", but no further information is ever offered.

Its current use, and its importance today, is due to is adjacency to the super-popular "http" world wide web port 80. Sometimes an "off the beaten path" web server will be established to listen not to port 80, but to an alternate related port such as 81, 82, 8080, or 8090. (Related by proximity or appearance.) So port 82 is only noteworthy today because it is a near neighbor to port 80 and is sometimes used in the same way.

Related Ports: 
80, 81, 443, 8080, 8090




Background and Additional Information:

Please see the discussion on the port 81 page for information about URL defaults and overriding the default ports used by Internet protocols.

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