@Pablo_Martinez From your screenshot it appears that a device in your LAN is querying your router via SNMP protocol and the router thinks that it's an actual threat. That's not an actual threat -...

@Pablo_Martinez Something's wrong with your IP address settings: At least two different devices are receiving the same IP address as your printer in question (192.168.0.206). If you're trying to bind...

@Jasson_Hong Try disabling Smart Connect feature of your main router and test if there's any improvement. By disabling Smart Connect you can separate your 2.4 GHz and 5 GHz networks with a different...

@Ramsun Make sure you're with the latest FW release for the RE - you can get it from here. Reset the RE to it factory default by pressing the reset button fro abut 10 seconds. Then use this video to...

@Manas4938 Leave it as it is.

@Manas4938 Yes, If you have older hosts in your network you would lose the source-filtering benefits for those specific clients The easiest way to check if that suits your needs - switch to IGMP v3...