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by vetinari 610 days ago
Even in this situation, your ISP can port forward to you.

While not universal, some ISPs support PCP, where you can ask for a port mapping to your CGNAT-ed IP and port. They might or might not honor the external port (if it is taken, they obviously cannot), but you will get some hole punched.
1 comments
doublerabbit 610 days ago
> your ISP can port forward to you

But will they? Domestic ISPs are pretty hesitant to offer such, or anything at that manner.

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vetinari 610 days ago
Some do. But when they don't, it is not a fault of CGNAT - which does provide the capability -- but a fault of specific ISP, that's not willing to use it.
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