Asus RX3041 - Manual (Page 46)

RX3041 Router User's Manual
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LAN client. Use the Refresh button to get the latetly updated
situation
3.6 NAT
3.6.1 Virtual Server
If you configure the router as a virtual server, remote users
access services such as Web or FTP at your local site via
public IP addresses can be automatically redirected to
local servers configured with private IP address. In other
words, depending on the requested service (TCP/UDP port
number), the router redirects the external service request to
the appropriate server.
Example:
ID Private IP Private Port Type Public Port Comment
1 192.168.2.20 200 TCP 80 Web Server
2 192.168.2.12 333 TCP 21 FTP Server
3 192.168.2.28 455 TCP 23 Telnet Server