Manager behind a NAT
Consider the case where the eG manager and agents are in a private Intranet (see Figure 1). All the agents can be configured to communicate with the manager using its private IP address. In this case, if external access from the Internet is required for the eG manager, network address translation can be setup, so the eG manager can be accessed using a public IP address from the Internet. In the example in Figure 5.1, the manager is installed on a private address - 10.5.20.12. The agents are installed on private addresses 10.5.20.4, 10.5.20.11, 10.5.20.19. The manager is accessible from the Internet via a public address - 184.108.40.206. In this case, users inside the Intranet (eg., User A) can use the URL http://10.5.20.12 to connect to the manager, while users on the Internet (eg., User B) must use the URL http://220.127.116.11/ to connect to the manager (see Figure 1).