slaptijack

While setting up a new blog for an old site the other day, I ran into a situation where the main page would work, but individual posts would result in a 404 (page not found) error. Checking the error log revealed that Apache could not find the file it was …

I would hope there is a better way to do this. The other day, I had a need to see all the interfaces on a router and how much input and output traffic they were passing. This just seems like something that should be built in, but I've not seen …

Configuring your syslog server to accept logging output from your Cisco routers and switches requires a few basic steps. We'll assume that you are using a new server and haven't made any previous changes to the syslog configuration. I use <acronym title="Red Hat Enterprise Linux">RHEL</acronym> 5 most …

This problem happened on a Mac Mini running OS X 10.4 (Tiger) not too long ago. The user was trying to run tshark against interface en2 — a USB <acronym title="Network Interface Card">NIC</acronym>. The tshark command produced the following output.

# tshark -w /tmp/slap -i en2
Capturing …

This seems to be a pretty common problem for Cisco users. Not that Cisco devices have more queue drop problems, just that more Cisco users are a little confused by the information generated in the show interface command.

Specifically, we're talking about the lines that look something like this:

Input …

I always forget to do this. Long ago I installed XQuartz on my Mac OS X 10.5 (Leopard) desktop. For the life of me, I can't remember why I installed it. XQuartz replaces the X11 that comes with Mac OS X. I might have done this since XQuartz is …

I hate losing useful SQL queries, so I tend to save them. Ever so often, I stumble across a file of queries from some work I was doing months ago. The following two queries are just such a case. I was analyzing some call data for a call center that …

It seems like I have been working with Mac OS X serial ports a lot lately. Since the Mac in question is hundreds of miles away, I've been doing all of this via the command line using tools like kermit and minicom. One error that we ran into recently was …

Considering the economy and the crunch that many IT departments are feeling, it is no surprise that many small to medium businesses are curious about using Microsoft's free security product as a replacement to the enterprise security solutions they have been using. Individual businesses will have to decide if Microsoft …

If you find yourself in the situation where a Cisco 7200 series router has a corrupted IOS image or the flash drive has gone on the blink, the following documents may be useful to you. Not all of these documents are Cisco 7200 specific, but they are all useful.

• Standard …

If you've worked on networks long enough, you're probably familiar with iperf. This application is great for testing throughput between two computers on your network. Unfortunately, if you find yourself in a situation where you have less than two computers to test with, iperf is less than ideal.

Fortunately, Cisco …

This is one of those annoying little things I have to do ever so often. There are two different commands to accomplish this task depending on the specific situation.

If you've made a lot of changes to a file and need to back all of those changes out, you can …

I got a call from GoDaddy the other day warning me that VeriSign is raising the price of domain registrations. This seems like a big deal because the price hike is happening on July 1st. The truth, though, is that VeriSign announced the price increase six months ago in December …

If you have SSH open toward the Internet, you are surely aware of the number of brute force password attempts your server sees everyday. Although a good password policy may make these attempts nothing more than an annoyance, each connection to your SSH daemon takes up valuable server resources. I …