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DD-WRT bypass PPTP for certain protocols/ports

Posted on 2011-09-28
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Last Modified: 2012-08-13
I need to know what commands to use to set my newsgroup traffic (port 119) to bypass my PPTP VPN tunnel.  I am using VyprVPN for secure tunneling/browsing, but my newsgroup traffic is too heavy to tunnel, so I'd like anything on port 119 to bypass the PPTP tunnel and just hit the regular WAN.  There IS information to do this available, I was directed to follow howto's on "iptables" commands to change the routing, but I'm not very savvy with CLI.  The instructions I used to set up my PPTP tunnel are here: http://www.giganews.com/vyprvpn/setup/dd-wrt/pptp.html 

Thanks!
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Question by:dbestcomputers
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arnold earned 500 total points
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http://www.dd-wrt.com/wiki/index.php/Iptables
http://linux.die.net/man/8/iptables detail explanation of iptables

iptables -t nat -I PREROUTING 1 -p tcp -m tcp --dport 119 --to-destination `nvram get wan_ipaddr`-j DNAT

to remove make sure it is in the list
iptables -t nat -L PREROUTING --line-numbers
iptables -t nat -D PREROUTING 1

look at the  existing iptables prior to adding the above to see where the PPTP client's route is added
iptables -t nat -L

look at netstat -rn

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