tcp keepalive?

Daniel Nielsen djn at
Sun Aug 10 06:03:58 PDT 2003


I'm behind a NAT (over which I have no control), And it seems to kill idle tcp 
connections quite fast. Is there anyway to make freeBSD 5.1 send tcp 
keepalives with smaller intervals?

It was possible in linux with sysctl net/ipv4/tcp_keepalive_time=300...
In freeBSD I have not been able to locate the equivalent option. Any help is 


There are no great men, only great challenges that ordinary men are forced
by circumstances to meet.
		-- Admiral William Halsey

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