Firewall recommendations for call home

This topic describes port access and firewall protection during call home activities.

IBM Storage Scale IBM® Support server is accessible through port 443. The following table lists the port and the Host/IP for communicating with the IBM Support server.

Table 1. Recommended port numbers that can be used for call home
Port Number Function Protocol Host/ IP
443 Call home TCP and UDP
esupport.ibm.com:
  • 192.148.6.11
  • 2620:1f7:c010:1:1:1:1:11
Note:
  • esupport.ibm.com works for the Call Home uploads as a proxy by forwarding data to ECuRep. Therefore, allowing any direct connections to ECuRep IPs is not required.
  • Start of changeesupport.ibm.com must be resolvable to its IP address on call home nodes. Because the call home stack contacts it by its hostname instead of the IP. This is done to make sure that no software updates are needed, if the underlying IP address changes in the next years. Due to the same reason, it is recommended to implement this via DNS instead of, for example, hardcoding the current hostname–IP pair in /etc/hosts.End of change