Finding and blocking an abusive host from your Apache log

Finding and blocking an abusive host from your Apache log

My web site slowed to a crawl last night, my CPU usage soared to 100%, and my built-in security measures weren’t helping. I ended up having to do some old-school Linux sysadmin work to stop them.

I haven’t been an everyday sysadmin since 2009. But every once in a while I can still come off the bench and do this stuff.

Read more

What happened to Compuserve?

What happened to Compuserve?

Compuserve was an online service for dialup modems from the 1970s to the 1990s. It was a way of getting online and communicating with others before the Internet was generally available to individuals. Later, it became a primary way for individuals to connect to the Internet. But over time, it faded away into history. Here’s what happened to Compuserve.

Read more

Asuswrt-Merlin vs Cisco

I recently saw advice to buy a Cisco RV130W instead of buying an Asus router such as an RT-AC66U and souping it up with Asuswrt-Merlin. I can see both sides of the argument but in the end I favor the Asus solution when I consider Asuswrt-Merlin vs Cisco. Here’s why.

Now, if you’re arguing business vs personal use, there’s no contest. In a business setting, buy the Cisco.

Read more

Clean malware from a router

Clean malware from a router

I see a few misleading articles out there promising to tell you how to scan your router for malware or viruses. Unfortunately they don’t really explain the problem. They also don’t explain the alternative way to solve the problem you want to solve. What you really want to do is clean malware from a router–and viruses too. And that’s something you can do pretty easily. For free.

Yes, that’s right. You won’t have to pay 50 bucks a year for a subscription to keep your router clean.

Read more

AT&T U-Verse vs Charter Spectrum Internet

AT&T U-Verse vs Charter Spectrum Internet

I’ve had high speed Internet for about as long as anyone in my ZIP code–as soon as DSL was available, I signed up and paid through the nose for it. It took a while for fiber to become an option, but I switched once I did. I’ve been a Southwestern Bell/AT&T customer for a good 17 years. Over the years I weighed it and AT&T U-Verse vs Charter Spectrum.

Recently I switched to Charter though. There are pros and cons to each of them, so I thought going through them might be helpful. Keep in mind Charter recently acquired Time Warner Cable and Bright House Networks, so this applies to former Time Warner Cable and Bright House areas as well.

Read more

Recommended DD-WRT settings

Recommended DD-WRT settings

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.

Read more

You might need a new router

Do you need a new router? If your Internet is slow after upgrading to a faster service, and if your wifi range and reception is poor, or your Internet connection just generally misbehaves a lot, you might need a new router.

Even the New York Times, of all places, has published articles extolling the virtues of new routers. If your wi-fi at home is bad, they say, think about picking up a TP-Link Archer C7 router. I like the Asus RT-AC66U myself,  but in my experience, and the experience of my colleagues, a new router makes a huge difference.

When one longtime friend upgraded to a TP-Link Archer, he told me his wi-fi improved so much his wired network was suddenly struggling to keep up with it.

Read more

How to mitigate MS15-078 or future Microsoft font driver vulnerabilities

Microsoft rushed out an out-of-band patch, MS15-078, to deal with active exploits in their font driver yesterday. Since pushing out patches takes time, my boss asked me what we could do to mitigate the issue in the meantime.

The biggest threat, by far, is exploit-bearing fonts being downloaded from web sites. Ideally you only install trusted fonts from trusted sources locally on your workstations, right? If not, I suggest you start that practice as well.

You have a couple of options when it comes to blocking fonts in browsers.

Read more

WordPress Appliance - Powered by TurnKey Linux