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Chapter 6 - RouteFinder Manager
Multi-Tech Systems, Inc. RouteFinder RF802EW User Guide
4. To filter packets to be passed or blocked, use the Packets Defined by list to select
TCP/IP or User.
Packets Defined by TCP/IP - If you choose to define by TCP/IP, you must enter
the packet IP information.
IP Address - Enter the IP address of the packet to be Blocked or allowed to Pass.
Netmask - Enter the subnet mask for the packet.
TCP/IP Service Port - Enter the Socket Port you would like to block or allow to
pass (for example, HTTP= 80)
Privilege Level - Use the Privilege list box to select an appropriate level for this
filter. It is common to set many filter rules for a particular client. At times, the rules
you have set may conflict with one another. When a conflict occurs, the filter with
the higher privilege level will override the other filters.
Note: Level one is the highest level; level sixteen is the lowest privilege level.
Example: Lets say you configure a filter rule for IP address 192.168.100.72
with a privilege level of 16 to Pass using socket number 80. At the same time,
you set the same filter rule to block IP Address 192.168.100.72 with a privilege
level of one. The RF802EW will implement the filter to block the IP address
192.168.100.72 because the privilege level is higher.
Note: If conflicting rules have the same privilege level, then the RF802EW will
block the packet.
Click Insert to add each IP address to the list.
To remove a defined packet, select the packet youd like to delete from the table and click
Delete.
Packets Defined by User - If you choose to define by User, you must define the
byte pattern of the packets. The RF802EW uses the defined byte patterns to block
or pass packets from the WAN or from the LAN.
1. In the Block dialog box, select Enable Block User Defined Pattern Function.
2. In the Packets defined by User list, select From LAN or From WAN.
Starting from which byte number - Indicate the first byte in the packet the
RF802EW should read to determine if the byte pattern (in Hex) is one that should be
filtered. Exclude the PPP header. Start from byte 0 of the network protocol.
Byte Pattern (in Hex) - Enter the packet byte pattern that you would like the
RF802EW to recognize as a packet to be filtered. (Block/Pass from the WAN to the
LAN). The maximum pattern size is 12 bytes.
Click Insert to add each byte pattern to the table.
To delete a defined packet, select the packet in the table and click Delete.