Siemens ADSL 50 - Manual (Page 54)

SANTIS ADSL 50/500 User Manual
Intrusion Detection
This page displays the rules for intrusion detection.
You can select Disable and click Apply to disabled intrusion detection. Select Enabled to invoke this function. In
addition, click Modify Rules to enter or modify details for the rules if necessary. After finishing the modification,
click Apply.
Virtual Server
This page shows all virtual server rules configured in your ADSL Router.
The Router implements NAT to let your entire local network appear as a single machine to the Internet. The typical
situation is that you have local servers for different services and you want to make them publicly accessible. With
NAT applied, it will translate the internal IP addresses of these servers to a single IP address that is unique on the
Internet. NAT function not only eliminates the need for multiple public IP addresses but also provides a measure of
security for your LAN.
When the router receives an incoming IP packet requesting for access to your local server, the router will recognize
the service type according to the port number in this packet (e.g., port 80 indicates HTTP service and port 21
indicates FTP service). By specifying the port number, you tell the router which service should be forwarded to the
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