90% of Incoming DNS Requests Blocked, But Why?
It's become apparent that about 90% of the incoming external DNS requests are being blocked at the firewall.
Config:
Our public NS1 is a Windows 2012R2 server, running in a DMZ. There is a simple DNAT rule (Any -> DNS -> External IP ==> Change dest…
Sophos UTM9 Firewall appears to be blocking all dot tk DNS lookups from the LAN
Sophos SG135 running UTM9.4
If I do an nslookup of dot.tk using 8.8.8.8 as the server from inside my LAN I get timeouts. From another workstation that is connected directly to the ISP it works fine. All other DNS lookups from inside the LAN work fine…
Why are google.com and gmail not trusted?
Out of the blue today our UTM 9 started dropping (I think) all google domain related sites. All google related sites fail with:
Your connection is not private
Attackers might be trying to steal your information from www.google.com (for example, passwords…