Topic
Linux administration, WHM/cPanel, VPS tuning, DNS architecture and cloud deployments from the trenches.
Standard SSH hardening fails against web-shells; true host security requires kernel sysctl isolation, execution blocking on temporary mounts, and auditd logging.
Every new VPS ships wide open. Here is the exact sequence we run at Paj Digital Solutions before a single site goes live — SSH keys, fail2ban, kernel tuning and firewall rules.
Deploying Nginx as an Apache reverse proxy shields cPanel servers from resource exhaustion while retaining legacy .htaccess compatibility.
Multi-region DNS failover breaks in production because third-party resolvers routinely ignore low TTLs, bypass ECS data, and cache stale records.