Hi, a company we work with needs the following completed on our firewall. We only use a Draytek 2830 to connect to the web. There is no additional firewall. They asked for the following:

Please open your firewall to the following IP address range on all ports: 64.78.22.112/29. You must establish a direct NAT rule that routes us to the exchange server from the firewall

Our exchange server is on 192.168.1.10

Can anyone offer the steps I need to take - eternally grateful if you can

James