Security Hardening Guide

Understanding Security Hardening

Security hardening strengthens your ad blocking setup against threats and bypasses. Key aspects include:

  • Rule optimization
  • Attack prevention
  • Bypass protection
  • System security

Hardening Layers

Browser Level

  • Extension settings
  • Security features
  • Privacy options
  • Update management

Network Level

  • DNS security
  • Firewall rules
  • Proxy settings
  • VPN configuration

Security Measures

Filter List Security

# Prevent filter bypasses
||*$script,domain=example.com
@@||trusted.example.com^$script
||*.example.com/ads^$important

Browser Security

// Security-focused browser settings
privacy.resistFingerprinting = true
network.dns.disablePrefetch = true
privacy.trackingprotection.enabled = true

Common Threats

  • Filter list bypasses
  • Anti-adblock scripts
  • Browser fingerprinting
  • DNS manipulation
  • SSL stripping

Protection Strategies

Rule Hardening

  • Important flag usage
  • Wildcard protection
  • Domain verification
  • Exception management

System Hardening

  • Host file protection
  • DNS security
  • Process isolation
  • Update automation

Implementation Steps

  1. Audit current setup
  2. Identify vulnerabilities
  3. Apply security measures
  4. Test effectiveness
  5. Monitor and maintain

Advanced Configuration

DNS Security

# DNS over HTTPS configuration
[Resolve]
DNS=127.0.0.1:5335
DNSOverTLS=yes
DNSSEC=yes

Firewall Rules

iptables -A INPUT -p tcp --dport 53 -j DROP
iptables -A INPUT -p udp --dport 53 -j DROP
iptables -A OUTPUT -p tcp --dport 53 -j ACCEPT

Best Practices

  • Regular security audits
  • Update management
  • Backup strategy
  • Incident response plan