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Shell Programming and Scripting
How to check empty port using netstat?
Post 302911506 by Skrynesaver on Friday 1st of August 2014 05:41:34 AM
08-01-2014
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LEARN ABOUT DEBIAN
netstat-nat
netstat-nat(1) General Commands Manual netstat-nat(1) NAME
netstat-nat - Show the natted connections on a linux iptable firewall SYNOPSIS
netstat-nat [options] DESCRIPTION
netstat-nat Displays NAT connections managed by netfilter/iptables which comes with the > 2.4.x linux kernels. The program reads its information from '/proc/net/ip_conntrack' or '/proc/net/nf_conntrack', which is the temporary conntrack-storage of netfilter. OPTIONS
-h displays help -n don't resolve IPs/portnumbers to host/portnames -p <protocol> display NAT connections with protocol selection (see /etc/protocols) -s <source host> display connections by source IP/hostname -d <destination host> display connections by destination IP/hostname -S display SNAT connections -D display DNAT connections -L display only connections to NAT box self (doesn't show SNAT & DNAT) -R display only connections routed through the NAT box (doesn't show SNAT & DNAT) -x extended view of hostnames -r <src|dst|src-port|dst-port|state> sort connections -o no output header -N display NAT box connection information (only valid with SNAT & DNAT) -v prints version FILES
/proc/net/ip_conntrack or /proc/net/nf_conntrack SEE ALSO
http://www.tweegy.nl/projects/netstat-nat/ http://www.netfilter.org/ AUTHOR
netstat-nat has been written by D.Wijsman danny@tweegy.nl The manual page has been written by marceln@xs4all.nl July 2002 netstat-nat(1)