Firewalls: Stateful Firewalls, Stateless Firewalls, Next-Generation Firewalls (NGFW), Web Application Firewalls (WAF), Packet Filtering, Proxy Firewalls, Network Address Translation (NAT), Port Address Translation (PAT), Intrusion Detection Systems (IDS), Intrusion Prevention Systems (IPS), Deep Packet Inspection (DPI), Firewall Rule Management, Unified Threat Management (UTM), Virtual Firewalls, Cloud Firewalls, Firewall Policies, Application Control, URL Filtering, Threat Intelligence Integration, Firewall Logging and Reporting, SSL Inspection, Firewall Clustering, High Availability (HA) Configurations, Firewall Performance Tuning, IPSec VPNs, SSL VPNs, Firewall Auditing and Compliance, Zero Trust Networks, Firewall Change Management, Network Segmentation, Identity-Based Firewalls, Content Filtering, DDoS Protection, Firewall Load Balancing, Security Information and Event Management (SIEM) Integration, Endpoint Protection Integration, Wireless Firewall Security, BYOD Security Policies, Geo-IP Filtering, Botnet Protection, Anti-Spam Filtering, Email Security Integration, VoIP Security, IoT Security, Sandboxing, Threat Emulation, Customizable Dashboards, API Security Gateways, Multi-Factor Authentication (MFA) Integration, Risk-Based Firewall Policies, Firewall Failover Systems
Windows Firewall, Linux Firewalls (iptables, ufw - Uncomplicated Firewall, firewalld, nftables, pfsense), macOS Firewalls (Little Snitch), Cisco Firewalls, navbar_firewalls - see also navbar_security, navbar_iam