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conntrack_tcp
This module tracks TCP connections based on the source and destination ports. It has many timers. Make sure you know what you are doing before changing them.
- syn_sent_timer
Specifies after how many seconds we assume a connection is closed or unresponsive after a TCP SYN was sent but none was received.
Default : 180 seconds
- syn_recv_timer
Specifies after how many seconds we assume a connection is closed or unresponsive after a TCP SYN was sent and received but no further packet is exchanged.
Default : 60 seconds
- last_ack_timer
Specifies after how many seconds we assume a connection is closed or unresponsive after a TCP FIN was received in both directions and no further packet is exchanged.
Default : 30 seconds
- close_timer
Specifies after how many seconds we assume a connection is closed or unresponsive after a TCP RST was received and no further packet is exchanged.
Default : 10 seconds
- time_wait_timer
Specifies how long we wait for remaining packets on the network after a TCP connection has been closed.
Default : 180 seconds
- established_timer
Specifies how long we keep informations about an established TCP connection while no further packets are exchanged.
Default : 7200 seconds
- enable_reuse_handling
Enable or disable handling of reused connections. Those connections violate the RFC in a way that the same source and destination ports are reused within the two minutes after the connection has been closed. Please note that the SYN packet will be handled as a packet from the first connection.
Default : no