Background: I have an Asus RT-AC68U router running the stock Asus firmware (currently version 3.0.0.4.386_51729). I have two IP cameras which I have set up for WAN access via DDNS and port forwarding (I'm aware of the negative security implications of port forwarding, but so be it). This setup has worked flawlessly for years--I can view the cameras' livestream feeds, manage the cameras, etc. from anywhere. However, about 2-3 months ago I lost WAN access to the cameras, although they still work fine via my LAN. Moreover, I can't even ping my WAN IP address, which suggests to me that the router is blocking all inbound traffic.
Questions:
- Does the RT-AC68U router have some sort of global setting that blocks all inbound traffic? Conceivably I may have inadvertently turned that setting on, although I have no recollection of making any changes to the router's setup for a long time.
- Is it possible to do a detailed inspection of the router's inbound firewall rules (e.g. can I dump iptables)?
- Is it possible to reset the router's inbound firewall rules without affecting the router's other settings (except any port forwarding rules)? This would enable me to start over with a clean slate.
