Jump to content

Systat (protocol)

From Wikipedia, the free encyclopedia
This is the current revision of this page, as edited by Trappist the monk (talk | contribs) at 21:54, 15 March 2019 (top: remove unsupported |month= paramter;). The present address (URL) is a permanent link to this version.
(diff) ← Previous revision | Latest revision (diff) | Newer revision → (diff)

Systat or Active Users is a simple Internet protocol ostensibly useful for "debugging and measurement".[1] A connection to port 11, by either TCP or UDP, elicits a list of users currently logged into the system. Though it remains an official Internet protocol, its use is considered a security vulnerability.[2]

References

[edit]
  1. ^ Postel, J. (May 1983). Active Users. IETF. doi:10.17487/RFC0866. RFC 866.
  2. ^ "systat and netstat". eTutorials.