Changing HMC firewall settings

In an open network, a firewall is used to control outside access to your company network. The HMC also has a firewall on each of its Ethernet adapters. To control the HMC remotely or give remote access to others, modify the firewall settings of the Ethernet adapter on the HMC that is connected to your open network.

1. In the navigation area, click HMC Management.
2. Click Change network settings.
3. Click the LAN Adapters tab.
4. Select the LAN adapter that you want to work with and click Details.
5. Click the Firewall tab.
6. Using one of the following methods, you can allow any IP address using a particular applications through the firewall, or you can specify one or more IP addresses:
   • Allow any IP address using a particular application through the firewall:
     1. From the top box, highlight the application.
     2. Click Allow Incoming. The application displays in the bottom box to signify that it has been selected.
   • Specify which IP addresses to allow through the firewall:
     1. From the top box, highlight an application.
     2. Click Allow Incoming by IP Address.
     3. On the Hosts Allowed window, enter the IP address and the network mask.
     4. Click Add and click OK.
7. Click OK.