When we had 5 Static IP addresses I used the BT Business Hub to allocate each server an internet-facing IP address.
We moved most of our servers to cloud services and downgraded our BT Business service to a single fixed IP address.
At this time I was advised by BT to turn off the "Static IP address" in the BT Business Hub 5 and revert to DHCP and port forwarding to the single remaining internet-facing server.
This works fine; the Mac Server is offering its services to the internet as required ... except ...
- I cannot ping the server from the internet, only the router.
- Some reachability functionality on the (Mac) Server is not working as I suspect it requires ICMP. This is not a critical issue.
- I cannot ping the server from the intranet LAN using its internet-facing IP address.
Q: Why should I not use the "Static IP Address" setting on the router as I was doing when we had 5 static addresses?
Since the Mac Server needs to be available nearly 24/7 I am reluctant to experiment before understanding whether there is a very good reason for not using the router's "Static IUP Address" setting. I have been caught out by some quirks of previous BT Business Hubs. The unintended consequences of network misconfiguration can be stressful and time-consuming!
