Server Management

Fail2Ban watches configured logs and applies temporary blocks when activity matches a filter and jail policy. It can reduce repeated login attempts re...

If a website opens on a phone but not on one computer, the server may still be healthy. Compare the failing computer with a working device to isolate ...

A query that appears stuck may be waiting for a lock held by another transaction. Finding the blocker is safer than cancelling sessions at random, bec...

When CPU load climbs, a disk fills up or an RDP connection drops, the first step is to gather the right evidence. My Linux and Windows GitHub reposito...

A fresh Ubuntu Server installation is a starting point, not a finished service. Before putting an application on it, verify the release, maintenance p...

SSH is a powerful remote administration channel, so protect both the account and the path that reaches it. Moving the listener to another port can red...

An AutoSSL request that remains pending is waiting on a validation or provider step. Repeatedly clicking “Run AutoSSL” may produce more requests witho...

Moving an SSH server to key-based authentication can improve account security, but changing the server before testing the key creates an avoidable loc...

iptables is a command-line interface to Linux packet-filtering rules. Before editing a server firewall, find out which tool manages the rules and whet...

Installing unattended-upgrades does not, by itself, tell you whether a machine is applying the updates you expect. Configuration, timers, repository s...