What F/W is currently used by the WiFi routers that PLDT provides?

I live in a townhouse compound that next to a squatter colony. Ang dami sa kanilang naka tambay sa labas ng compound namin gumagamit ng tablets.
I frequently check the MAC address list in my PLDT router and so far, okay pa naman.

I have a spare router lying around. I might just flash it with DDWRT or Tomato. Then I'll kill the WiFi on the PLDT modem and use my router instead.