System information

42 Logical Partitions on System i5
A server is an HMC you want to access remotely. In Figure 2-11, HMCs 1, 3, and 4 are
servers. A client is a system from which you want to access other HMCs remotely. In
Figure 2-11, Web-based System Manager Remote Clients A, B, and C, and HMCs 1, 2, and 5
are clients. As shown in Figure 2-11, you can configure multiple servers and clients in your
private and open networks.
An HMC can be in multiple roles simultaneously. For example, an HMC can be a client and a
server like HMC1 in Figure 2-11. An HMC can also be a CA, server, and client at the same
time.
Figure 2-11 System manager security servers and clients
Each server must have a unique private key and a certificate of its public key signed by a CA
that is trusted by the clients. Each client must have a copy of the CA's public key.