2nätverk

2nätverk is a term used in information technology, particularly in Swedish-language contexts, to describe architectures that connect two distinct computer networks to enable controlled communication while maintaining network segmentation.

A typical 2nätverk setup involves a border gateway (router or firewall), VPN or dedicated links, and routing and security policies. Logical separation is often achieved with VLANs and access control lists, while inter-network routing uses protocols such as BGP or OSPF, and may employ SD-WAN overlays.

Common patterns include point-to-point connections, hub-and-spoke designs, and multi-homed configurations for redundancy. Multiple parallel links may be used to improve availability and throughput between networks.

Benefits include improved security through segmentation and policy enforcement, resilience via redundant paths, and easier control of traffic between trusted domains. It also supports hybrid cloud and partner integrations.

Challenges involve design and operational complexity, potential latency, higher costs for dedicated links or VPNs, and risks from misconfiguration. Strong identity management and continuous monitoring are essential.

Use cases include enterprises linking internal networks to supplier networks, connecting on-premises data centers to cloud environments, and separating sensitive data domains while enabling controlled collaboration.

See also: network segmentation, multi-homed networks, SD-WAN, VPN, BGP.