Asus router QoS

posted on 08:18 PM on Monday 27 October 2014

I run this website via dynamic DNS from a home server connected to the internet via a ASUS RT-n66u which is a great router. A couple of weeks ago, our internet connection got a bit wonky and Singtel send a technician over who could not solve the problem. The problem is that internet connectivity would be lost for a hour or two almost every day which was the reason for the script that I wrote. The problem has since disappear and since I have not changes any equipment, it must have been an issue with Singtel's backend. But during the problem period, I was tweaking the settings on the router in the hopes of solving the problem which it did not. But what I did do was to screw up the internal network access to this website. The routing used to work within the internal network when computers at home accessed this website but since the tweaking exercise, it has not. But the external world is fine. After much searching and head scratching, I finally found out the issue was due to the QoS option not being turned on in the ASUS router. Why would NAT loopback only work when QoS is enabled is beyond me. But it works now and I am happy.