Open cmd, type ipconfig, find your ipv4
enter that in your dns thing starting with 192.168, enter in your ipv4 ip.
After that assign it to port 28000, do this for both.
1 Then click start button >>
2 search for firewall >>
3 click on "allow a program through windows firewall" >>
4 click on "change settings" near top right >>
5 scroll down to blockland in that list >>
6 click on the unmarked check boxes next to the name. >>
7 click ok and walla it should work.