FULLFORMDEFINITION
Maximum segment lifetime is the time a TCP segment can exist in the internetwork system. It is arbitrarily defined to be 2 minutes long.
The Maximum Segment Lifetime value is used to determine the TIME_WAIT interval (2*MSL)
The command that can be used on many Unix systems to determine the TIME_WAIT interval is:
60000 (60 seconds) is a common value.
On FreeBSD systems this description and value can be checked by the command sysctl:
which gets the result:
On some Linux systems, this value can be checked by either of the commands below:
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