I'm not sure if they are trying to hack or are looking for bugs in my WIFI network, but its very suspicious.
I've observed that in the new firmware most of the clients that are auto-connect to the WIFI is none than the previous version or is it just me, but from their I'm greatful because I can monitor how many guest WIFI network are really connected. As that said I saw this Unknown hostname which is connected for more that 2hrs in the WIFI but didn't authenticate. I tried to force reconnect them and realized that they set their IP to static (my dhcp starts at x.x.x.20 but their ip are x.x.x.15-19 at first) so I banned it but after an hour or i saw another one connected and the first 3 mac address no is almost the same, I presume this is a pc or have an app that change its Mac address.
Its annoying that they are connected for several hours without authentication and scary that they are trying to hack the WIFI network? the network is in guess mode but no Vlan but I'm looking for a tut for Vlan setup.
Any input or help are welcome and thanks in advance.