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Full Discussion: iptables port forwarding does not work while I have 2 routes
Special Forums IP Networking iptables port forwarding does not work while I have 2 routes Post 302779333 by DGPickett on Tuesday 12th of March 2013 01:37:33 PM
Old 03-12-2013
Funny, first packet normally is syn no ack no fin, response is syn ack, the all ack until fin and fin ack. Is that sackOK a syn, an ack, ???

When the port changes, I look more to portforwarding examples, which are more than one rule. This works if you shut down either ethernet and address the other in the rule?
 

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LEARN ABOUT DEBIAN

ashunt

ashunt(8)							netsniff-ng-toolkit							 ashunt(8)

NAME

       ashunt - Autonomous System (AS) trace route utility

SYNOPSIS

       ashunt	 -H|--host <host> -i|-d|--dev <dev> [-6|--ipv6]      [-n|--numeric] [-N|--dns] [-f|--init-ttl <ttl>]	  [-m|--max-ttl <ttl>]
       [-q|--num-probes] [-x|--timeout <sec>]	   [-S|--syn] [-A|--ack] [-F|--fin] [-P|--psh] [-U|--urg]      [-R|--rst] [-E|--ecn-syn] [-t|--tos
       <tos>] [-G|--nofrag]	 [-X|--payload <string>] [-Z|--show-packet] [-l|--totlen <len>]      [-w|--whois <server>] [-W|--wport <port>]
       [--city-db <path>]      [--country-db <path>] [-v|--version] [-h|--help]

DESCRIPTION

       This program provides AS information on each hop between the client and the target host.

OPTIONS

       ashunt -i eth0 -N -E -H netsniff-ng.org
	   IPv4 trace of AS with TCP ECN SYN probe

       ashunt -i eth0 -N -S -H netsniff-ng.org
	   IPv4 trace of AS with TCP SYN probe

       ashunt -i eth0 -N -F -H netsniff-ng.org
	   IPv4 trace of AS with TCP FIN probe

       ashunt -i eth0 -N -FPU -H netsniff-ng.org
	   IPv4 trace of AS with Xmas probe

       ashunt -i eth0 -N -H netsniff-ng.org -X "censor-me" -Z
	   IPv4 trace of AS with Null probe with ASCII payload

       ashunt -6 -S -i eth0 -H netsniff-ng.org
	   IPv6 trace of AS up to netsniff-ng.org

OPTIONS

       -h|--help
	   Print help text and lists all options.

       -v|--version
	   Print version.

       -H|--host <host>
	   Host/IPv4/IPv6 to lookup AS route to

       i-|-d|--dev <netdev>
	   Networking device, i.e. eth0

       -p|--port <port>
	   Hosts port to lookup AS route to

       -4|--ipv4
	   Use IPv4 requests (default)

       -6|--ipv6
	   Use IPv6 requests

       -n|--numeric
	   Do not do reverse DNS lookup for hops

       -N|--dns
	   Do a reverse DNS lookup for hops

       -f|--init-ttl <ttl>
	   Set initial TTL

       -m|--max-ttl <ttl>
	   Set maximum TTL (default: 30)

       -q|--num-probes <num>
	   Number of max probes for each hop (default: 3)

       -x|--timeout <sec>
	   Probe response timeout in sec (default: 3)

       -S|--syn
	   Set TCP SYN flag in packets

       -A|--ack
	   Set TCP ACK flag in packets

       -F|--fin
	   Set TCP FIN flag in packets

       -P|--psh
	   Set TCP PSH flag in packets

       -U|--urg
	   Set TCP URG flag in packets

       -R|--rst
	   Set TCP RST flag in packets

       -E|--ecn-syn
	   Send ECN SYN packets (RFC3168)

       -t|--tos <tos>
	   Set the IP TOS field

       -w|--whois <server>
	   Use a different AS whois DB server (default: /etc/netsniff-ng/whois.conf)

       -W|--wport <port>
	   Use a different port to AS whois server (default: /etc/netsniff-ng/whois.conf)

       --city-db <path>
	   Specifiy path for geoip city database

       --country-db <path>
	   Specifiy path for geoip country database

AUTHOR

       Written by Daniel Borkmann <daniel@netsniff-ng.org>

DOCUMENTATION

       Documentation by Emmanuel Roullit <emmanuel@netsniff-ng.org>

BUGS

       Please report bugs to <bugs@netsniff-ng.org>

								    2012-06-29								 ashunt(8)
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