Back to My Mac warning: no NAT-PMP or UPnP

[cjw]

When I turn on Back to My Mac, it shows me this error dialog. I do have UPnP turned on, but I’ll double check it… How do I turn on NAT-PMP?

—–

Back to My Mac may be slow because NAT Port Mapping (NAT-PMP) or Universal Plug and Play (UPnP) is turned off on your router.

Turn on NAT-PMP or UPnP. See the documentation that came with your router for instructions.

[ OK ]

—–

[cjw]

Hmm, I checked and my configuration is as follows:

Configuration:

[x] Enable NAT-PMP
[x] Enable UPnP
[x] Enable Secure Mode

Rules:

Allowed External Ports
[ 1-65535 ]

Allowed Internal Addresses
[ 192.168.0.0/24 ]

Allowed Internal Ports
[ 1-65535 ]

[support]

Did you set up port forwarding while UPnP is enabled? If port forwarding sends incoming packets to a different internal host, then your Mac won’t get those incoming packets.

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