In order that Sphera support engineers will be able to enter customers machines, the IPs below needed to be open on the firewall :

212.29.248.194 - Gateway
62.90.238.81 - Gateway
203.124.166.220 - Gateway
69.20.83.199 - Sphera FTP site
212.29.248.217 - Global License Manager

The list below are the external IP's of SWsoft.
The list contains the Primary IP and backup IPs, in case one line goes down.

Please add them to your FW rules.

64.131.90.27
80.89.128.178
82.200.65.190
84.237.120.254
89.251.97.2
208.251.212.1