Enhancing OT Network Security with a 2.5 DMZ

In our OT network, we're considering adding a Level 2.5 DMZ to bolster security. This would serve as an additional layer of protection between the control systems (Level 2) and the enterprise network ...
Sophos SG135 WAN side firewall configuration

I have revisited my firewall configuration and have a problem. I have found that the destination for internet bound traffic on a subnet had been set to all rather than WAN. This didn't look right so...
Multiple old SG firewalls - Too many failed logins from same IP

Hi there, How many chances to see all my customers SG firewwall with "Too many failed logins from" same IP ? I have only 4 customers left on SG models and all of them have the same problem, starting...
Sophos SG135 WAN side firewall configuration new problem creating a Vlan interface

I have a few subnets and have been trying to bring some discipline to my firewall configuration. Because the system is live I am trying to create a new interface Test_Network on a VALN using my private...