#Firewall
Sep 06, 2026
Linux Network Troubleshooting and Security Hardening: Diagnosing Latency, Packet Loss, Firewall Rules, and TCP Kernel Tuning
A masterclass in Linux networking: diagnosing elusive packet loss and latency with ss, tcpdump, and traceroute, hardening firewalls with NFTables/UFW, and tuning TCP kernel parameters for high throughput.