Lately I’ve noticed a steady increase in the amount of referrer spam I’m getting, so I decided to see if there was a simple way to trap and ban these bots. The typical approach is usually to maintain a blacklist of domain names and deny them using mod_rewrite rules. The downside to this approach is the amount of time and effort that goes into maintaining your blacklist.

I recently bought a new Raspberry Pi 3 and installed Slackware ARM current (hard float) on it. My goal was to compare the performance of the hard float port against Slackware ARM 14.2 (soft float), which is currently powering this RPi3 hosted website.

That tag “stuff” is not working on our corporate website, please fix asap the costumer complained. Sure, will do immediately I replied confidently, believing this to be a simple matter of purging some old cache or refreshing permalinks. Sadly that was not to be the case so I ended up having to get my hands dirty. To my absolute horror, the site was running one of those godawful themeforest themes.

With the latest Red Hat release I experienced an issue with increasing the screen resolution above 1027×768. After checking out the VirtualBox forums, I found my answer and a solution to the issue.

So the annual “Slackware needs PAM and Kerberos” thread is going strong over at linuxquestions.org at the moment. This particular topic always seem to awaken a collective inferiority complex within the Slackware community, where users are aggressively refuting any claim that Slackware is not a viable choice for business use (you can do anything with some lines of bash right?…). At the opposite side you have users arguing that Slackware has become a niche hobbyist distribution due to its reluctance to implement mainstream technologies.

My plan was to have a Zimbra e-mail server running in VirtualBox using the internal networking model with a local domain. To make this work, I have a virtual pfSense box running on the same internal network to provide “outside” access. Additionally, pfSense is also running a DNS resolver so I figured it would be a trivial matter to add the local records I needed.

Looking through my server logs I noticed how Baidu’s web spider was causing an unexpected redirect loop while trying to index an image attachment page. Since I deliberately redirect all attachment page requests to the actual post owning the attachment, I decided to take a closer look. The following request triggered the loop:

I was recently surprised to discover that I could no longer manage my posts (invalid post type) or modify any of my installed plugins (sorry, you are not allowed to access this page). I’ve been exposed to these kind of problems before, both through database corruption and by my own hand so to speak. However, this time around everything checked out so I enabled debugging to track down the error.

Microsoft bingbot is a repeat offender on my RPi and as a consequence it’s subjected to extended periods of jail time. However, being a good netizen I like to provide an even playing field for all web crawlers. With that in mind, what would be the easiest way of purging all IP addresses from fail2ban?

Let’s Encrypt suffered from a major service disruption today leaving users unable to access various services. The cause of the problem seems to have been an update to Boulder (ACME CA) which has since been reversed.