Welcome to the second instalment of the ssh files. In this instalment, we’ll be taking a look at logging in without a password, using public key authentication. The major benefit of logging in through public key authentication, is that you will only have to remember the pass phrase of your key and no longer a dozen or more passwords on different servers. Also, setting your ssh daemon to only allow public key authentication will foil any attempts by script kiddies to brute force your password…because there isn’t one. Continue reading The ssh files (2)
Online or offline, we are constantly bombarded with all kinds of messages trying to convince us to buy this or give money to that. I tend to be a little allergic to advertising messages.I tend to be a bit careful with the kind of information I want to allow in. Well, I’ve got that pretty well covered…except for one last area. Continue reading Door to door spam
If you have ever had to administer Linux (or Unix) servers, you are probably familiar with ssh, the secure shell client. For those of you not familiar with ssh, think “telnet on steroids”. For those of you not familiar with telnet or ssh…what are you doing administering servers? Ssh is like the Swiss army knife of remote connectivity. It can do so much that I think that no one has ever used all of the features it offers. This article is an exploration of the basics of ssh, future articles will explore its functionality in more depth. Continue reading The ssh files (1)
I don’t know why but generally it seems that the Dutch are simply poor drivers. For instance, when there’s fog, rain or snow, you get either people who panic and suddenly think it’s best to drive at a speed that would embarrass an asthmatic hippo. Or you get people that drive on with an attitude of “damn the torpedoes, full speed ahead!”. Either one is fairly dangerous, the second obviously more so than the first, but still. If people would just match their speed to the circumstances and the traffic around them, things would be fine, but no, they simply don’t look further than the hood of their cars. Continue reading Drivers from hell
This article is as much a “how to” as it is for myself to document how I built a postfix front-end mail server for MS Exchange and integrated spam and virus scanning. The base for this server is a HP DL360, running openSUSE Linux 11.3., but it should work for most other distributions out there. It assumes you already have a running installation of Linux. We’ll be using postfix, amavisd-new, clamav and spamassassin.
Continue reading Using postfix as a front-end for MS Exchange
Today, for some reason, we had a major power interruption here in the area. It didn’t take very long, only a couple of seconds, but it was long enough for one of our UPS’s to crap itself. And not just a little bit because in crapping itself it took with it a 3TB disk enclosure. Poof, just like that, all 12 disks showed orange LEDs, which is never a good sign. Power cycling the enclosure didn’t solve anything. Continue reading A special kind of idiot
There’s been a lot of talk about a major calamity striking the Earth in the year 2012, on December 21 (or other dates in the year, depending on who you’re talking to) no less. Now, that’s a fairly precise date and that alone should raise a few questions. How can someone make a prediction of an approaching calamity with such amazing precision? In my opinion, the more precise a number is, the more likely it is false. For example, if I told you that 371.346 civilians died in World War 2 as a direct result of bombing, you might be surprised at the detail of my research but the truth is that nobody knows exactly how many people died during World War 2, let alone as a result of bombing.
Okay, so what is this calamity that is going to befall the planet in 2012? Well, the experts making these claims aren’t exactly sure about that. They know the date (but don’t seem to agree on it), but they don’t know exactly what’s going to happen. Some say there’s going to be some kind of shift of Earth’s magnetic poles, or some kind of planetary or even galactic alignment. Others are talking about a comet impact, earthquakes, solar flares, a rogue planet or even a brown dwarf (a star with not enough mass to sustain fusion) wandering through our solar system. No matter the method, we’re all going to die. Or are we? Continue reading 2012, are we all going to die?