HMC network connections

You can use different types of network connections to connect your HMC to managed systems. For more information about how to configure the HMC to connect to a network, see Configuring the HMC. For more information about using the HMC on a network, see the following:

Types of HMC network connections
Learn how to use the HMC remote management and service functions by using your network.
Deciding which connectivity method to use for the call-home server
Learn more about the connectivity options you have when you use the call-home server.
Simplified connectivity
Learn about the IP addresses the HMC uses when it is using simplified connectivity.
Using Internet SSL to connect to remote support
All the communications are handled through TCP sockets initiated by the HMC and use a high-grade SSL to encrypt the data that is transmitted. The destination TCP/IP addresses are published (see Internet SSL address lists) so that external firewalls can be configured to allow these connections.
Choosing an Internet Protocol
Determine the IP address version used when the HMC connects to your service provider.
Internet SSL address lists
Learn about the addresses the HMC uses when it is using Internet SSL connectivity.
Using a virtual private network to connect to remote support
A virtual private network (VPN) provides security when you connect to remote support.
VPN server address list
Lists the servers used by an HMC when the HMC is configured to use Internet VPN connectivity.
Using the telephone and modems to connect to remote support
If you want to use a modem to connect to remote support, you must provide a dedicated analog line to connect to the HMC modem. The HMC uses the modem to dial the global network and to connect to IBM® service and support.
Using multiple call-home servers
This topic describes what you need to know when you decide to use more than one call-home server.

Parent topic: Choosing network settings on the HMC

Last updated: Mon, April 13, 2020