Networking & Firewall Configuration

Network architecture, firewall configurations, routing, VPN, and Sophos XG Firewall documentation.

📋 Contents

Sophos XG Firewall

Complete Sophos firewall deployment and configuration:

• Cluster configuration and bridge bonding
• Port forwarding and NAT rules
• Firewall deployment and troubleshooting
• Oracle Cloud integration

Network Architecture

Network design, routing, and bonding:

• Bonding configuration (active-backup, LACP)
• Routing architecture and diagrams
• Network topology documentation
• Email routing configuration

VPN Configuration

VPN setup and management:

• Oracle Cloud VPN configuration
• VPN interface options and testing
• Site-to-site VPN guides

Port Forwarding & Routing

Specific routing fixes and port configurations:

• Port 2087 routing diagnosis and fixes
• TCP dump analysis
• Smart routing configurations
• NGINX proxy routing

🔧 Key Configurations

Sophos XG Firewall

• Bridge mode with bonding
• High availability cluster setup
• Port forwarding rules
• Oracle Cloud integration

Network Bonding

• Active-backup configuration
• LACP (802.3ad) setup
• Pre-reboot validation
• Success reports and verification

Routing

• Domain routing maps
• Email routing fixes
• Smart routing with NGINX
• Port-specific routing solutions

📚 Documentation Structure

docs/
├── sophos/      # Sophos XG Firewall configurations
├── networking/  # Bonding, routing, architecture
├── vpn/         # VPN configurations
└── routing/     # Port forwarding, routing fixes

🎯 Purpose

• Network architecture reference
• Firewall configuration guide
• Troubleshooting documentation
• Deployment procedures

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Last Updated: January 23, 2026