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A DD-WRT USB print server

Dave Farquhar DD-WRT, Servers and Networking March 31, 2016August 11, 2018DDWRT, usb port, windows 7

If your router has a USB port and is running DD-WRT, you can turn it into a DD-WRT USB print server. It can still do wireless duty while it allows your computers to print to your wired USB printer over your wired or wireless network. It’s not very intuitive or user friendly, but it works. Here’s how to set it up with Windows 7. Other Windows versions will be about the same.

Dave Farquhar

David Farquhar is a computer security professional, entrepreneur, and author. He started his career as a part-time computer technician in 1994, worked his way up to system administrator by 1997, and has specialized in vulnerability management since 2013. He invests in real estate on the side and his hobbies include O gauge trains, baseball cards, and retro computers and video games. A University of Missouri graduate, he holds CISSP and Security+ certifications. He lives in St. Louis with his family.

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Linksys EA6200 DD-WRT installation

Dave Farquhar DD-WRT, Servers and Networking March 28, 2016January 11, 2021asus, DDWRT, DLNA, linksys, NVRAM, wrt54g

I picked up a couple of refurbished Linksys EA6200 routers this past weekend. For whatever reason, DD-WRT isn’t officially supported on them, though it does seem to be a popular DD-WRT router. A lot of people make the upgrade far more difficult than they need to. With some simple hacks, Linksys EA6200 DD-WRT installation is pretty straightforward.

I came up with an 18-step process that I simplified just as much as I could. Unlike some methods I’ve seen, I don’t have you editing any binary files or creating custom startup scripts.

Dave Farquhar

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Use guest networks to secure IoT “smart” devices

Dave Farquhar security February 8, 2016February 2, 2019AP, DDWRT, steve gibson

A neighbor asked me about a recommendation Steve Gibson and Leo Laporte made a couple of weeks ago about securing your IoT household “smart” devices, like doorbells, thermostats, televisions, and anything else that wasn’t traditionally computerized, by putting it on a guest network.

The short answer is yes, it’s something you should do. It doesn’t make them perfectly safe, but it’s the best you can do, so you should. But I would do it a bit differently from Gibson–I think the ideal setup has two guest networks.

Dave Farquhar

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Recommended DD-WRT settings

Dave Farquhar DD-WRT, security December 24, 2015January 26, 2022AES, AP, chrome, DDWRT, firefox, firewall, lowercase letters, malware, nintendo, SSID, vulnerability, WAN, WEP, wi-fi

I’ve been asked a few times now for my recommended DD-WRT settings, or at least my good-enough settings. I think that’s a great idea, so I’ll walk through how I configure a DD-WRT router. Follow these steps and I can almost guarantee you’ll have the most secure network on your block.

For the purposes of this tutorial, I am going to assume you are configuring DD-WRT as your primary router.

Dave Farquhar

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What to do when your router isn’t in the DD-WRT router database

Dave Farquhar DD-WRT, Servers and Networking May 22, 2015August 14, 2016d-link, DDWRT, TL, tp link

If you have a router and want to run DD-WRT on it, but can’t find the router in the router database, you may have learned the hard way that the router database is a couple of years out of date.

But not all hope is lost. Here’s how to find a build, if one exists.

Dave Farquhar

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How to find inexpensive routers to run DD-WRT

Dave Farquhar DD-WRT, Servers and Networking April 1, 2015August 3, 2017Broadcom, cisco, DDWRT, linksys, TL, WAN, wrt54g

I’ve been using and recommending DD-WRT for years, but it’s getting harder to find inexpensive routers to run DD-WRT. Many inexpensive routers now use non-Broadcom chipsets that DD-WRT and other third-party firmware don’t support well, or at all.

But there’s still a way to get inexpensive, compatible routers that isn’t likely to change any time soon.

Dave Farquhar

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Build the best, most secure wifi in your neighborhood

Dave Farquhar DD-WRT, Servers and Networking March 24, 2015August 26, 2017AES, android, apple, cat5, DDWRT, lowercase letters, malware, Meraki Wifi Stumbler, Micro Center, netflix, Roku, SSID, TL, wi-fi

My neighbor asked me for advice on setting up wi-fi in his new house. I realized it’s been a while since I’ve written about wi-fi, and it’s never been cheaper or easier to blanket your house and yard with a good signal.

Blanketing your house and yard while remaining secure, though, is still important.

Dave Farquhar

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DD-WRT as an access point

Dave Farquhar DD-WRT, Servers and Networking January 7, 2014August 18, 2017android, cat5e, DDWRT, Meraki Wifi Stumbler, TL, wi-fi

There’s an addition on the back of our house, probably added in the 1970s or 80s, where the wi-fi reception is exceptionally poor. Something about the walls makes it tricky, and I also suspect we get some interference from the neighbors behind us. I solved the problem with a cheap router running DD-WRT as an access point. Read more

Dave Farquhar

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How I upgraded a TP-Link TL-WR841N to DD-WRT

Dave Farquhar DD-WRT, security, Servers and Networking January 6, 2014January 11, 2021cat5, command prompt, dd wrt, DDWRT, TL, tp link

If you want a nice router or access point, you can do a lot worse than upgrading a TP-Link TL-WR841N to DD-WRT. The TL-WR841N is inexpensive and reliable, and DD-WRT runs well on it once you get the right build.

You can configure it to be a router, an access point, or a repeater, based on what you need. It usually costs $25 and sometimes you can find one on sale for $20 or even $15, so it’s a huge bargain. Even if you want 802.11ac speeds, a TL-WR841N makes a fantastic secondary access point to improve your connectivity.

Let’s get on with the upgrade. In the case of the TP-Link TL-WR841N (or TL-WR841ND, which uses the same build), it’s really easy–10 steps. Read more

Dave Farquhar

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Upgrading a D-Link DIR-615 to DD-WRT

Dave Farquhar DD-WRT, Hardware, security, Servers and Networking December 2, 2013January 31, 2022AES, CGI, code execution, d-link, dd wrt, DDWRT, firefox, Micro Center, Universal Plug and Play

Last year I bought my mother in law a D-Link router, an oddball DIR-615 revision E1 that was only sold at a few stores. It was supposed to be a Fry’s exclusive, but I bought hers at Micro Center. It worked for a while, then gave her trouble, so this year I was working with it again, and when I was setting it up, I noticed it had some security vulnerabilities–remote code execution, UPnP vulnerabilities, and who knows what else. So that got me some practice upgrading a D-Link DIR-615 to DD-WRT.

DD-WRT’s track record and attitude towards security research could be better, but I’d rather trust my mother in law to DD-WRT’s B+ security than D-Link’s F.

Dave Farquhar

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