About This Site

I'm a Tech Guy for over 30 Years Knowledge of Computers, Networks, PC Gadgets. This site is to be used to share some of my knowledge and reviews
If you find info useful from this site then please consider to Donate

PPTP Server Not Working On Tomato Router

I love Tomato Router. I normally use the Shibby Firmware that has VPN options built in. Strange thing is when I enable the PPTP server option on the router some will work as normal. Others I have to add a script to open Port 1723. I troubleshooted the issue I had with a client by using nmap. Great utility to see what ports are open or not. When I ran nmap  on the LAN side to the router port 1723 was open when PPTP server was enabled. When I ran in on the WAN side it was not. Sometimes your ISP will block 1723 but this was a business account and the ISP did not. I search online and found the answer.

In the Tomato Firmware go to Administration-Scripts-Firewall. Add the following script:

#!/bin/sh
iptables -A INPUT -p tcp –dport 1723 -j ACCEPT
iptables -t nat -I PREROUTING -p tcp –dport 1723 -j ACCEPT
iptables -I INPUT -p tcp –dport 1723 -j ACCEPT

Save and then reboot the router. (IMPORTANT before the dport on the 3 lines is a double dash. When copy and paste it will only make 1 so you will need to add the -)

Once I did this I tested nmap and port 1723 was then open. I could then connect to my VPN server.

Print Friendly, PDF & Email

Leave a Reply

You can use these HTML tags

<a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>