Network gateway

What is a network gateway?

Network gateways are used throughout enterprise networks of all sizes and industries.  Reasons to use gateways include:

• Enhanced security: Gateways provide enhanced security capabilities needed to strengthen security posture. Key elements include IDS/IPS intrusion detection system (IDS) and network detection and response (NDR) to monitor network traffic for malware and suspicious activity, dynamic segmentation for role-based policies, policy enforcement firewall (PEF) for secure access, and guest network support.
• Improved scalability: Cloud-based gateways offload traditional controller functionality to the cloud, allowing control and management of tens of thousands of APs at a single site. 
• Seamless roaming: Gateways support tunneling which allows mobile users to maintain the same Layer 3 address when roaming throughout a multi-VLAN network, enabling users to move seamlessly between building or different networks.
• Cost savings and efficiency with SD-Branch: Gateways combine wireless, wired, and WAN infrastructure with management capabilities to help maximize performance and minimize operational costs compared to traditional solutions with MPLS.
• Simplified management: Network gateways help simplify operations when deployed using zero touch provisioning, with a dynamic RADIUS proxy.

A network gateway connects two discrete networks each with different protocols and acts as a translator.  A router ensures the data goes to the correct address and routes the data on similar networks that use the same protocol.