Hmm, after unchecking Limit Telnet Access (WAN), a port scan shows that the port is blocked now. I don't understand why that would open port 23 to the internet.
I should've mentioned that remote administration on the Administration->Management->Telnet Management isn't enabled. So, why is this Security-Firewall->Impede WAN DoS/Bruteforce->Limit Telnet Access setting opening the firewall for telnetd?
I can't tell you why you are seeing that behavoir, but I only offer a suggestion that I've been using for years. I use FWBuilder to construct my own firewall rules that is pushed out to my WRT1200ac. I know exactly what is allowed in & out this way. Unless you know iptables extremely well, this is a great tool to construct a comprehensive ruleset.
the option simply limits access to services such as shh, telnet, etc
why the hell do you activate the function if you have not activated shh, telnet remote access?
First, don't make comments that can start a flame war. Second, your last comment doesn't address my issue. Third, there are times when I open the ssh port when I plan to travel. Fourth, those options opens the port(s) when they shouldn't which makes it a serious security concern.
