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Module 7: WAN Concepts - Coggle Diagram

- - - - Links provided by carriers (leased lines, MPLS, Metro Ethernet, etc.).
      - Frame Relay and ATM are older WAN technologies.
      - WAN encapsulation defines how data is transmitted across provider links.
- - - - Organizations now use the Internet as a WAN backbone.
      - VPNs (Virtual Private Networks): create secure tunnels over the Internet.
      - IPsec VPN: secure site-to-site communication.
      - SSL VPN: remote user access through browsers.