While installing a new server last week, my (SSH / TCP) connection seemed to suffer from some sort of hanging; randomly. I tried to figure out what was going on and it didn’t take long to find…
An IPv6 MTU path discovery bug
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Category: IPv6
IP addresses for your Hetzner machine
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We lease a couple of machines at Hetzner.de and recently, I looked to improve my initial Easy Setup manual, so I could also use the IPv4 “main” address for a virtual machine. This leaves the main server (the “host”) without an IPv4 address. Please read below how to proceed.
Syslog-ng intrusion detection
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There seems to be a problem using the file() destination for /proc files in Linux. When implementing Securing Your Server With Syslog-NG you will run into it. Please read below.
Securing your server with Syslog-ng
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There are many programs that help you secure your servers. There are simple firewalling programs and there are complex network intrusion detection systems. Depending on your demands, there seems to be a solution for everyone. Unless you’re picky and you think you can do better – like I did, when I wrote my own combination…