Puzzle of the Day
The UNIX system reserves network ports numbered 1023 and below for
root-owned processes only. User processes must use ports with higher
numbers. So, if the source port from a remote host has a source port of 536, it
must have originated with a process that was at one time root. This is a
UNIX standard, not an Internet one.
What problems can this scheme cause in a heterogeneous network?
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Page last modified on 2/28/98