05-14-2007
about TCP connection
Hi Experts,
need help about release or refresh TCP Connection:
i have the sample like below :
application log connection:
0500 ( 192.168.0.1:36053) 00919 2007/05/10 23:30:25 112 13 2007/05/10 23:30:25 1969/12/31 17:00:00
0500 ( 192.168.0.1:36054) 00920 2007/05/10 23:30:26 000 00 1969/12/31 17:00:00 1969/12/31 17:00:00
0500 ( 192.168.0.1:36055) 00921 2007/05/10 23:30:26 000 00 1969/12/31 17:00:00 1969/12/31 17:00:00
0500 ( 192.168.0.1:42699) 00314 2007/05/14 07:07:23 097 13 2007/05/14 07:07:23 1969/12/31 17:00:00
0500 ( 192.168.0.1:36057) 00923 2007/05/10 23:30:26 000 00 1969/12/31 17:00:00 1969/12/31 17:00:00
0500 ( 192.168.0.1:49175) 26426 2007/05/10 23:54:46 000 00 1969/12/31 17:00:00 1969/12/31 17:00:00
netstat -a | grep 500
hostname.500 192.168.0.1.36053 16560 0 66608 0 ESTABLISHED
hostname.500 192.168.0.1.36054 5840 0 66608 0 ESTABLISHED
hostname.500 192.168.0.1.36055 5840 0 66608 0 ESTABLISHED
hostname.500 192.168.0.1.36057 5840 0 66608 0 ESTABLISHED
hostname.500 192.168.0.1.36067 5840 0 66608 0 ESTABLISHED
hostname.500 192.168.0.1.36073 16560 0 66608 0 ESTABLISHED
the application connection its connect through port 500 to another application, but if we see the bold one is mean that the tcp connection not binded to the another application server.
how to release or refresh the tcp connection to not bind "bold" ?
please advices
thank you
bucci
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LEARN ABOUT FREEBSD
nos-tun
NOS-TUN(8) BSD System Manager's Manual NOS-TUN(8)
NAME
nos-tun -- implement ``nos'' or ``ka9q'' style IP over IP tunnel
SYNOPSIS
nos-tun -t tunnel -s source -d destination -p protocol_number [source] target
DESCRIPTION
The nos-tun utility is used to establish an nos style tunnel, (also known as ka9q or IP-IP tunnel) using a tun(4) kernel interface.
Tunnel is the name of the tunnel device /dev/tun0 for example.
Source and destination are the addresses used on the tunnel device. If you configure the tunnel against a cisco router, use a netmask of
``255.255.255.252'' on the cisco. This is because the tunnel is a point-to-point interface in the FreeBSD end, a concept cisco does not
really implement.
Protocol number sets tunnel mode. Original KA9Q NOS uses 94 but many people use 4 on the worldwide backbone of ampr.org.
Target is the address of the remote tunnel device, this must match the source address set on the remote end.
EXAMPLES
This end, a FreeBSD box on address 192.168.59.34:
nos-tun -t /dev/tun0 -s 192.168.61.1 -d 192.168.61.2 192.168.56.45
Remote cisco on address 192.168.56.45:
interface tunnel 0
ip address 192.168.61.2 255.255.255.252
tunnel mode nos
tunnel destination 192.168.59.34
tunnel source 192.168.56.45
AUTHORS
Nickolay N. Dudorov <nnd@itfs.nsk.su> wrote the program, Poul-Henning Kamp <phk@FreeBSD.org> wrote the man-page. Isao SEKI
<iseki@gongon.com> added a new flag, IP protocol number.
BUGS
We do not allow for setting our source address for multihomed machines.
BSD
April 11, 1998 BSD