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mvampire:
As I understood, Your problem is NAT+port forwarding, not any kind of programming problem or Lazarus problem.
You will need router setup anyway if You have NAT. That's how Internet works now...

Jishaxe:
So there is absolutely no way to do this without port forwarding?

fabienwang:
using port 443 would go through any firewall, but requires a SSL communication

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