Firewall requirements for block storage replication
Configure your firewall to meet the requirements for block storage replication.
If you are enabling block storage replication between
two Cloud Pak System,
you need to permit the following connections in your data center network
between the system management IP addresses on each system. The communication
is bidirectional, which allows the systems to communicate to manage block storage replication:
| Protocol | Source and destination IP address | Source port | Destination port |
|---|---|---|---|
| ICMP | System management IP addresses on either system | N/A | N/A |
| TCP | System management IP addresses on either system | Any | 443 |
If you use IP replication, TCP ports 3260 and 3265 must be available for IP partnership communications. Port 3260 is used by systems to initially discover each other. Port 3265 is used for IP replication sessions that are used to transmit data. Both ports must be open to any firewalls.