Security
Hardening, certificates, and what to do if you are compromised.
SSH keys and turning off password login
SSH password attacks can be stopped completely by disabling password authentication and using cryptographic keys instead. This guide walks through ...
SecurityThe first hour on a new server
Learn how to secure a new server in your first hour of access. This guide walks you through OS patching, SSH hardening, and automatic updates in th...
SecurityFirewall rules that will not lock you out
A firewall needs fewer rules than most admins think. This guide shows you how to allow SSH and application ports on AlmaLinux 9 with firewalld or U...
SecurityHow to tell if your server has been compromised
A compromised server shows signs of unexpected access, unfamiliar processes and changes you did not make. Check SSH logs, authentication records an...
Securityfail2ban and automatic security updates
Fail2ban watches for repeated failed login attempts and automatically blocks the source IP using your system firewall. Pair it with automatic secur...
SecuritySetting up an alert for when your server goes down
Set up external HTTP and port monitoring to catch outages before customers report them. Add local disk and certificate checks to prevent failures. ...
SecurityReading your server logs when something looks wrong
When something goes wrong on your Linux server, knowing which logs to read and how to filter them saves troubleshooting time. This guide covers the...
SecurityWhat DDoS protection covers, and what it does not
Hostworld's UK VPS network includes always-on DDoS filtering that stops volumetric network floods before they reach your server. This guide explain...
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