Managing Directors – When was the last time you left a window open in your office on purpose?
Why not? Is it because you would be inviting thieves in to steal the equipment in your office?
If so, then when was the last time that you asked your IT service provider to give you a list of open ports on your firewall?
Open ports on your firewall is essentially the same as leaving your windows and doors open in your office . Sometimes it’s justified to leave these windows and doors open however you must ensure that you understand which ports are open and why they are open.
Ask your IT service provider for a list of your firewall rules and ask them to justify why each of the ports is open