Niveo NWAR33P, Руководство пользователя

Страница: 115 / 155

115
Firewall
Listed are the items under the Firewall section: Packet Filter , Ethernet MAC Filter, Wireless
MAC Filter, Intrusion Detection, Block WAN PING and URL Filter.
Packet Filter
Packet filtering enables you to configure your router to block specific internal / external users (IP
address) from Internet access, or disable specific service requests (Port number) to / from the
Internet. This configuration program allows you to set up different filter rules for different users
based on their IP addresses or their network Port number. The relationship among all filters is
“or” operation, which means that the router checks these different filter rules one by one, starting
from the first rule. As long as one of the rules is satisfied, the specified action will be taken.
Rule Name: User defined description for entry identification. The maximum name length is 32
characters, and then can choose an application that they want from the listbox.
IP Version: Select either IPv4 or IPv6 based on need.
Internal IP Address / External IP Address: This is the Address-Filter used to allow or block
traffic to/rom particular IP address(es). Input the range you want to filter out. If you leave these
four fields empty or enter 0.0.0.0, it means any IP address.
Protocol: Specify the packet type (TCP, UDP, TCP/UDP, RAW, Any) that the rule applies to.
Select TCP if you wish to search for the connection-based application service on the remote
server using the port number. Or select UDP if you want to search for the connectionless
application service on the remote server using the port number. Only when
RAW is selected,
then you can type the protocol number (0-254) to identify the protocol that you want the filter
applies to. When
Any is selected, it means the filter will applies to any protocol.
Action: If a packet matches this filter rule, forward (allows the packets to pass) or drop (disallow
the packets to pass) this packet.