$cat /proc/sys/net/ipv4/tcp_keepalive_time 7200 $ tcp_keepalive_time the interval between the last data packet sent (simple ACKs are not considered data) and the first keepalive probe; after the connection is marked to need keepalive, this counter is not used any further source :http://tldp.org/HOWTO/TCP-Keepalive-HOWTO/usingkeepalive.html linux/net/ipv4/tcp.c – 8 identical 365: * TCP Keep-Alives (4.2.3.6) 366: * MAY provide keep-alives. …
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