Perhaps an alternative is pagekite ( https://pagekite.net/ ) an opensource (Python) tunneling service. It's also more avanced then this one.
And yes, it can modify your localhost:9999 to mydomain:80. Why is that usefull? My ISP blocks ports upto 8999, so i wouldn't run a webserver / ftp / smtp / ... without paying extra for unlocking those ports :)
And yes, it can modify your localhost:9999 to mydomain:80. Why is that usefull? My ISP blocks ports upto 8999, so i wouldn't run a webserver / ftp / smtp / ... without paying extra for unlocking those ports :)