2.11.3.2. Virtual Server Mappings
Fig. 63. Virtual server mappings.
The gateway enables you to expose internal servers on the intranet through NAT to the Internet for public use. The exposed internal servers are called virtual servers because from perspective of hosts on the Internet, these servers are invisible in terms of TCP/IP.
To expose “preset” internal servers:
1.Select the corresponding Enabled check boxes for the kinds of servers (FTP, IMAP4, SMTP, POP3, TELNET, and HTTP) you want to expose.
2.Specify the private IP addresses of the internal servers.
To expose other internal servers:
1.Specify the Service Name, Private IP Address, Port Number, and whether the service is
2.Select the corresponding Enabled check box for the internal server.
3.Repeat Steps 1 to 2 for other
2.11.4. DHCP Server
2.11.4.1. Functionality
There are three mode of DHCP Server to be defined in ‘Functionality’: Disable, DHCP Server , and DHCP Relay.
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