> For the complete documentation index, see [llms.txt](https://docs.verge.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.verge.io/learn-the-platform/module-4-networking.md).

# Module 4: Networking

- [Overview](https://docs.verge.io/learn-the-platform/module-4-networking/04-networking.md): Configure external and internal networks, VLANs, firewall rules, and dynamic routing in VergeOS.
- [Network Concepts & Types](https://docs.verge.io/learn-the-platform/module-4-networking/01-network-concepts.md): Understand VergeFabric SDN architecture, the five VergeOS network types, built-in networking services, and how traffic flows through the system.
- [Lab: Network Configuration](https://docs.verge.io/learn-the-platform/module-4-networking/lab.md): Build a multi-network VergeOS environment with external access, internal segmentation, VLANs, and firewall rules.
- [External Networks](https://docs.verge.io/learn-the-platform/module-4-networking/02-external-networks.md): Learn how to create and configure VergeOS external networks — connecting your environment to upstream LAN, WAN, and Internet infrastructure with VLANs, bonding, static IPs, and high availability.
- [Internal Networks & DHCP/DNS](https://docs.verge.io/learn-the-platform/module-4-networking/03-internal-networks.md): Create and manage isolated virtual networks in VergeOS with built-in DHCP, DNS, inter-network routing via the DMZ, and tenant self-service networking.
- [Firewall Rules, NAT & VLANs](https://docs.verge.io/learn-the-platform/module-4-networking/04-firewall-nat-vlans.md): Master VergeOS network rules — firewall policies, NAT/PAT translation, static routes, VLAN trunking, VPN connectivity, and micro-segmentation strategies.


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