1. Configure the firewall, for example, Eudemon 1000E-X. Log in to the configuration tool, for example, PuTTY.
a) Open Internet Explorer, enter https://www.putty.org/ in the address box, and press Enter. Click the download link to obtain the PuTTY tool.
b) Double-click the PuTTY program. The Basic options for your PuTTY session page is displayed.
Figure 2 Basic options for your PuTTY session page

c) Enter the firewall IP address in the Host Name text box, use the default port number 22, and click Open.
d) Enter the user name and password. The default user name is admin and the default password is Admin@123.
e) Run the system-view command to enter the system view.
f) Run the following commands to configure the NAT server:
nat server global 10.10.10.10 inside 192.168.10.10
nat server global 10.10.10.11 inside 192.168.10.11
nat server global 10.10.10.12 inside 192.168.10.12
2. Configure NAT IP addresses on the OMU portal of the VCN. During IP address mapping configuration, you need to configure the NAT IP addresses corresponding to service-related ports (ports of the SMU, MU, OMU modules) and set the NAT IP addresses of the modules to the public IP address of the corresponding server. This topic describes how to configure IP address mapping for the MU.
a) Log in to the OMU portal as the admin user.
b) Choose Maintenance > Unified Configuration.
c) In the System Domains panel, set Module name to MU and Parameter type to MU media configuration, and click Search.

d) Click Edit in the record where the value of Parameter type is NatIP and set Parameter Name to the public IP address (10.10.10.10) corresponding to the server.
e) Configure NAT IP addresses for other modules on the server. The table describes the parameters to be set when you configure the NAT IP addresses.
