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I am about to leave on a business trip, which means I once again have to deal with hotel WiFi. I don’t like WiFi in hotels for two reasons – they almost never provision enough network capacity, and they usually have some kind of irritating captive portal system.

Captive portals often have frustrating limitations, like only allowing a small number of devices on the same login, or regularly requiring those devices to login again to the portal. On top of that, hotel WiFi often uses AP isolation (preventing clients from talking to each other directly) or other issues that make Google Chromecast not work. And finally, configuring all my devices to use the different WiFi settings in each location is tedious.

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I still use a Buffalo WZR-HP-G300NH as my home router, although I no longer use it as a wireless AP*. Tonight I upgraded it to OpenWRT 12.09 “Attitude Adjustment”. These are my notes on the upgrade.

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A DNS amplification attack

Late last night, someone began using my home Internet connection in DNS amplification attacks. My Virgin Media cable link was hit with several megabit of “ANY record” DNS queries for ripe.net.

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Immediately after the upgrade to 10.03.1-rc5, the OpenWRT team released 10.03.1-rc6. Since rc5 didn’t fix wireless on my Buffalo WZR-HP-G300NH, I gave rc6 a go.

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A few weeks ago, I upgraded my Buffalo WZR-HP-G300NH home router to OpenWRT 10.03.1-rc5. I followed the same upgrade process as I used to upgrade to previous releases. However, this time most settings were not restored correctly.

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OpenWRT 10.03.1-rc4 has just been released, so I’m once again upgrading my Buffalo WZR-HP-G300NH home router. Each release candidate in the 10.03.1 series has improved performance of the Atheros wireless chipset, but I still see occasional network interruptions when the laptop is idle overnight. How does wireless on rc4 stack up against rc3?

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I’ve run OpenWRT on my Buffalo WZR-HP-G300NH home router for a week now. So far there has been only one problem: wireless performance. The ath9k driver in OpenWRT Backfire 10.03 has a number of bugs, from poor latency jitter to occasionally dropping the connection. I’ve upgraded the router twice, first to 10.03.1-rc2 and then to 10.03.1-rc3. It appears that 10.03.1 final is only a few weeks away.

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I’ve been using a Linksys WRT54GL router running DD-WRT for several years now. It runs OpenVPN and fits a surprisingly large number of features into 4 MB of flash and 16 MB of RAM. It has been stable and reliable, but it’s a very under-powered device by modern standards. I haven’t been happy with the pace of DD-WRT development, which takes a very long time to release large, monolithic updates. First I tried to upgrade it to OpenWRT, but the latest release is too large to incorporate OpenVPN in 4 MB of flash. So I replaced it with a Buffalo WZR-HP-G300NH running OpenWRT Backfire 10.03.

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