We are writing an application that will be creating a large number
of tcp connections. What we need to know is:
How many tcp sockets (outgoing and incoming) can a process create/manage?
and (on an unrelated note):
Is there a way to adjust the amount of time an un-ACKed SYN will remain in
the queue to be processed?
We are trying to reduce our vulnerability to SYN floods and along with syn
cookies and increasing the tcp_max_syn_backlog, we would like to set an
upper bound on the amount of time linux will wait for a host to respond to
the syn acknowledgement. Is there a way to do this? It appears that, by
default, a SYN will stay in the queue for several minutes before being
dropped - we'd like to set it to something like 30 seconds.
We're using 2.2.14.
Thanks in advance,
Matthew Zito
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