Security Settings
- Enabling or Disabling the Firewall
The supports the firewall function to control the transmission of data streams and protect your local area network from unauthorized access.
- Setting LAN IP Filtering
The LAN IP address filtering function is used to block specified clients in the LAN from accessing specified Internet services.
- Setting the Service Access Control
Service Access Control is used to control the number of service users who can access your . By default, access from all services is disabled. To set the Service Access Control:
- Configuring a Virtual Server
The supports the virtual server to enable external users to use the services provided in the local area network (LAN) using the Hypertext Transfer Protocol (HTTP), File Transfer Protocol (FTP), and other protocols.
- Configuring a Special Application
The supports the function to use a special application to configure dynamic port forwarding. Certain applications in the local area network (LAN) must use a specified port of the firewall to access remote applications. To set up a Transmission Control Protocol and User Datagram Protocol (TCP/UDP) connection between an application in the LAN and a remote application, the firewall uses this port forwarding function to open the required port.
- Setting the DMZ
If external users cannot access certain network services provided by the local area network (LAN), use the DMZ function provided by the to set the client that provides the required network services as the DMZ host; external users can then access these services properly. DMZ is an acronym for the demilitarized zone in networks.
- Setting the SIP ALG
The Session Initiation Protocol (SIP) is a control protocol at the Application Layer. It is used to initiate, change, or end a session. An application-level gateway (ALG) is a specific application of SIP and is used to check the status of data packages. To complete a SIP application, enable the SIP ALG.
- Setting the UPnP
The Universal Plug and Play (UPnP) service realizes intelligent connection between two UPnP devices using port forwarding. UPnP devices can obtain IP addresses automatically and access the Internet dynamically.
- Configuring NAT
Network address translation is the process of modifying source and destination IP addresses when IP packets are transmitted across a router or firewall. The purpose of this process is to translate internal (private) IP addresses into external (public) IP addresses to provide a solution to the impending exhaustion of IP addresses. supports port-restricted cone NAT and symmetric NAT. You can configure the NAT settings as required.
- Filtering Specified Websites
The enables you to specify and filter websites.
- Setting the DDNS
The Dynamic Domain Name Server (DDNS) is a system that associates a network address with a dynamic IP address. After you configure the DDNS, the sends the dynamic IP address of a computer to the DDNS. The DDNS then associates the updated IP address with the specified network address so that Internet users can use this network address to access the resources that you provide.
- Filtering Specified Devices
The MAC filtering function of the can filter specified devices on the local area network (LAN) so these devices are prevented from accessing the Internet or other devices on the same LAN.