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I know that /etc/security/limits.conf provides the persistent soft and hard limits for several values.
However, in the relevant list there is no indication about imposed limits on:
a) concurrent open tcp connections
b) number of unix domain sockets
Where and how can anyone set/get these?
Are these values interrelated somehow?
https://stackoverflow.com/questions/2332741/what-is-the-theoretical-maximum-number-of-open-tcp-connections-that-a-modern-lin specifies a theoretical maximum of 65,535 per user per server port, but a better method to determine your maximum is to find your maximum number of file descriptors for every socket connection must have one. The configuration can be altered with sysctl, but the ceiling is normally over 300,000.
