Due to the fact that the interface seems broken you have to use telnet. Tough it establishes the same mappings via telnet they do! work.
Steps.:
Using telnet
=>service host add name myService
=>service host rule add name=myService protocol=udp portrange 27000-27030
=>service host rule add name=myService protocol=udp portrange=28960
=>service host rule add name=myService protocol=tcp portrange 27014-27050
=>service host assign name myService host <192.168.0.2>