Hi, have you tried smaller MTU size on WAN interface?

Hi Mark_farber, yes, the logs show that NDS failure. Can you ping 8.8.8.8 from the device system management>diagnostic page? If it's not reachable please input another reachable host on the network detection service>remote host. Or you can disable ne...

Hi AndrewCan you check your private messages box? I sent a message to you. Thanks.