Re: Tuning NAT timeout values

[ludi <myhapwcforever@gmail.com>]

it maybe help you.
/usr/src/linux/net/ipv4/netfilter/ip_conntrack_proto_udp.c
#define UDP_TIMEOUT (30*HZ)
#define UDP_STREAM_TIMEOUT (180*HZ)
To change these values you can set up the udp timeout values.

tcp

/usr/src/linux/net/ipv4/netfilter/ip_conntrack_proto_tcp.c:


static unsigned long tcp_timeouts[]
= { 30 MINS, /* TCP_CONNTRACK_NONE, */
5 DAYS, /* TCP_CONNTRACK_ESTABLISHED, */
2 MINS, /* TCP_CONNTRACK_SYN_SENT, */
60 SECS, /* TCP_CONNTRACK_SYN_RECV, */
2 MINS, /* TCP_CONNTRACK_FIN_WAIT, */
2 MINS, /* TCP_CONNTRACK_TIME_WAIT, */
10 SECS, /* TCP_CONNTRACK_CLOSE, */
60 SECS, /* TCP_CONNTRACK_CLOSE_WAIT, */
30 SECS, /* TCP_CONNTRACK_LAST_ACK, */
2 MINS, /* TCP_CONNTRACK_LISTEN, */
};
I only find these , but I am not sure whether it work.