As it it sates in title.
Every router I had couldn't connect back to itself over Internet, for example:
- I open forward port 22 for ssh on my PC.
- I try to connect to that ssh with other PC in same network, with
ssh firstname.lastname@example.org I get refused by router
- I can connect from other network (other public IP) just fine, with same
Is that just my bad luck with routers or there is something behind it?