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Whitepaper

Remote Access Without Open Ports

MultiFusion Tunnel

Many sites sit behind carrier-grade NAT, a mobile router or a firewall that its owner will not open. This paper describes MultiFusion Tunnel: remote access with one switch, no inbound firewall ports, no static IP and no certificate work — what it needs, what that means for a site, and how to turn it on and off. It is off by default and LAN access never depends on it.

  • No inbound ports
  • Works behind CGNAT
  • Automatic HTTPS address
  • Off by default
  • Requirements stated
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