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664T Advanced Filters
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- Zuletzt aktualisiert am Donnerstag, 09. August 2007 09:56
664T Advanced Filters
Filters
Filters are used to deny LAN computers from accessing the Internet. The Router can be setup to deny internal computers by their IP addresses. The DSL-G664T can also block users from accessing restricted web sites.
IP Filters-Outbound
Use IP Outbound Filters to deny LAN IP addresses from accessing the Internet. You can deny specific port numbers or all ports for the specific IP address. Source IP - IP address criteria for the source computer(s) from which the packet originates. Destination IP - IP address rule criteria for the destination computer(s) (i.e., the IP address of the computer to which the packet is being sent). Source Port - Port number criteria for the computer(s) from which the packet originates. This field will be dimmed (unavailable for entry) unless you have selected TCP or UDP as the protocol. See the description of Source IP Address for the selection option. (safe port- any port number above 1024 is considered as safe port) Destination Port - Port number criteria for the computer(s) (i.e., the port number of the type of computer to which the packet is being sent). This field will be dimmed (unavailable for entry) unless you have selected TCP or UDP as the protocol. See the description of Source IP Address for the selection option. Protocol - drop down menu allows you to select the transport protocol for this access policy. Now "TCP", "UDP" or both of them are provided. Action - menu helps in defining this policy as Allow or Deny type policy. Allow type policies allow the traffic matched by the policy selectors to pass through, where as Deny type policy blocks that traffic.
IP Filters-Inbound
Use IP Inbound Filters to deny WAN IP addresses from accessing the internal network. You can deny specific port numbers or all ports for the specific IP address. Source IP - IP address criteria for the source computer(s) from which the packet originates. Destination IP - IP address rule criteria for the destination computer(s) (i.e., the IP address of the computer to which the packet is being sent). Source Port - Port number criteria for the computer(s) from which the packet originates. This field will be dimmed (unavailable for entry) unless you have selected TCP or UDP as the protocol. See the description of Source IP Address for the selection option. Destination Port - Port number criteria for the computer(s) (i.e., the port number of the type of computer to which the packet is being sent). This field will be dimmed (unavailable for entry) unless you have selected TCP or UDP as the protocol. See the description of Source IP Address for the selection option. Protocol - drop down menu allows you to select the transport protocol for this access policy. Now "TCP", "UDP" or both of them are provided. Action - menu helps in defining this policy as Allow or Deny type policy. Allow type policies allow the traffic matched by the policy selectors to pass through, where as Deny type policy blocks that traffic.
