Monday, October 5, 2020

Which ISP's routers support hairpinning (NAT loopback)?

NAT loopback, also known as hairpinning is that two hosts on the LAN behind the NAT gateway can communicate with each other via the NAT gateway's external address. Which ISP's router out of the box supports NAT loopback? Based on experience thus far in October, 2020, my experience is as follows,

  • Optimum. Yes
  • Verizon Fios. Yes
  • Spectrum. No

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