• UTM Default drop rule on DNS and DHCP traffic

    I've been doing some network refreshing over the past week. Today I spun up a new DHCP server pointing to new DNS servers. The setup is pretty straightforward - we have two VLANs phones and data. The new DHCP and DNS Servers worked fine on the Data…

  • Why my UTM does not resolve AWS ELB or example names (google.com)

    Hello I have a UTM but when wanting to do a Network object, it does not solve the Balancers (AWS ELB) and it does not solve the names like google.com, etc, making the requests in support tools I throw a ping and it does not solve the error of (The ping…

  • DNS traffic from SSL VPN clients allowed any DNS server

    Hi all, While testing some stuff on travel, I've discovered that my SSL VPN connected client can make DNS requests to ANY dns server (home ISP router, Google public DNS etc). That's a little weird to me because my Network Protection --> Firewall --> Rules…

  • 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…
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