@icysummer What have you set Block TCP Scan with RST to, it is off by default, if you enable it you will get an failed when scanning

@icysummer You can try a roule like this to block all to managment interface. then you also need to know that you are blocking other services on the router such as openvpn, this is not possible and...

same problem on ubuntu and windows controller, suspect it has something to do with daylight saving time, I have adjusted the clock at the os level but it seems to make no difference

@Krade yes I see now that you have the latest official version, I don't quite understand why you have a problem with the default vlan, what ip do you have on the wan interface on the router?...

@Krade you have a fairly old router firmware, try upgrading to the latest one. you can find it here. https://community.tp-link.com/en/business/forum/topic/857570?moduleId=794 What controller version...

@Vishlamba No, there hasn't been any firmware for the ER605 yet.