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[HOW-TO] Fix ports not forwarding in DD-WRT

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wifiI recently re-flashed my Linksys WRT54G and Motorola WR850G routers with updated DD-WRT firmware after running into some stability issues. So far they have both been stable since the re-flash and have not required manual restarting (I still put them on a scheduled reboot at 3AM). However, when I attempted to run my BitTorrent client, qBitTorrent, after all the appropriate ports were forwarded in the router’s firewall and settings applied in the client itself, no connection could be made. I did some digging around the internet and finally stumbled across this little firewall command for DD-WRT. The problem was fixed after entering the command and rebooting the router.

To apply the command, log into your router’s DD-WRT web interface and navigate to Administration > Commands. Paste the following within the command box and press ‘Save Firewall’. Afterward, you can either ‘Run Command’ or reboot the router to execute.

iptables -t nat -A POSTROUTING -j MASQUERADE

By the way, I’m using DD-WRT v24-sp2 mini build 14929 on the Linksys WRT54G v2 router and build 14896 on the Motorola WR850G v2. The WRT54G operates as the main wireless router; the WR850G is wired to the WRT54G and only operates in AP mode.


Written by falcon1986

10 November, 2013 at 10:54 PM

Posted in Networking

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Improve performance on Digicel’s 4G wireless modem [Part 1]

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wifiLate last year, I moved into a new students’ residence on my university’s campus. The residence is set up like an apartment complex with rooms on 6 levels. However, because the place was still new, it was not wired for easy internet access. The closest wireless access points that my laptop could detect proved to be unreliable so I decided to purchase a Digicel 4G wireless modem (Green Packet DX250). I paid for a month’s service and was successful at setting up the device. However, after about the first week, I noticed that the performance started to dwindle. Here is what I did to improve the wireless performance on this device.

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Written by falcon1986

23 March, 2013 at 10:26 AM

Setting up WDS with the WRT54G and the WR850G

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The following was an article I posted on my Blogspot.com blog that I am reproducing here...

Recenly, I got my Motorola WR850G wireless router fixed after being bricked for quite some time. I wanted to use it to extend my existing wireless network to areas in the house where my wireless laptop could not detect a signal. Here is how I got my Motorola WR850G v2 wireless router to wirelessly bridge to my Linksys WRT54G v2 wireless router.

The theory behind this is based on a Wireless Distribution System.

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Written by falcon1986

18 August, 2007 at 5:41 PM

Posted in Networking