In general, for ALEX/AXEL to operate unrestricted access outbound from Alex to ports 80 and 443 is required, and unrestricted UDP 123 port traffic in both directions for NTP time sync is advised. ALEX/AXEL also requires a minimum of 5 Mbps constant and stable upload and download internet speed.
We have also compiled a detailed document on ALEX/AXEL’s network requirements here. We recommend working together with your Local IT to review it.