If you are using PLDT MyDSL HG530 Modem, your default gateway should be 192.168.1.1.
- Enter 192.168.1.1 on the address bar, when prompt with login. use username: adminpldt, password: 1234567890
- On the left pane, click Basic, under that choose NAT.
- click on DMZ, enter the IP address you would want to access in WAN.
- click submit.