How to see historical root logins to a server
1 June 2025
2:49 pm
Command: last -F | grep root journalctl _COMM=sshd | grep root
Knowledgebase
Amazonbot and Bingbot excessively crawls websites, query parameters, and shop filters
1 June 2025
12:31 pm
Symptoms At times websites might appears super busy, with 10s of gigs of bandwidth usage per month, but it doesn’t make sense. After viewing the
Apache on WHM/cPanel randomly stops working – intermittently – possible PHP-FPM issue
1 June 2025
12:18 pm
Symtoms Randomly, perhaps once or twice a month, Apache completely stops serving sites. No obvious errors, except web sites aren’t loading anymore. From HTTP monitoring
The quickest way to find brute force attackers on a server using Netstat
30 May 2025
11:20 am
Step 1. Identify the bastard: netstat -an | grep ‘:443’ | grep ESTABLISHED | awk ‘{print $5}’ | cut -d: -f1 | sort | uniq
How to recognise and outbound attackers and a website compromise
23 May 2025
11:28 am
Platforms: Outdated CentOS 7 Virtualmin Client suddenly added to 8 block lists visible on MX Toolbox. Server’s top shows many users of the same name.
Consolidated List of Pronounced RBLs (Real-time Black Lists) and Experiences in De-Listing
4 June 2025
Background Getting your IP address blacklisted as is not fun at all. A simple breach leads to discomfort a few hours, a more serious breach
How to create or increase the swap file space for Debian or Red Hat
2 June 2025
Background Here are bare minimal instructions on how to set up a swap file for Debian (e.g. Ubuntu Linux) and Red Hat based operating systems
Amazonbot and Bingbot excessively crawls websites, query parameters, and shop filters
2 June 2025
Symptoms At times websites might appears super busy, with 10s of gigs of bandwidth usage per month, but it doesn’t make sense. After viewing the
How to see historical root logins to a server
1 June 2025
Command: last -F | grep root journalctl _COMM=sshd | grep root
Apache on WHM/cPanel randomly stops working – intermittently – possible PHP-FPM issue
1 June 2025
Symtoms Randomly, perhaps once or twice a month, Apache completely stops serving sites. No obvious errors, except web sites aren’t loading anymore. From HTTP monitoring