Netopia R7100-C User Reference Manual page 158

13-8 User's Reference Guide
By matching on a port number, a filter can be applied to selected TCP or UDP services, such as Telnet, FTP, and
World Wide Web. The tables below show a few common services and their associated port numbers.
TFTP
Port number comparisons
A filter can also use a comparison option to evaluate a packet's source or destination port number. The
comparison options are:
No Compare: No comparison of the port number specified in the filter with the packet's port number.
Not Equal To: For the filter to match, the packet's port number cannot equal the port number specified in the
filter.
Less Than: For the filter to match, the packet's port number must be less than the port number specified in the
filter.
Less Than or Equal: For the filter to match, the packet's port number must be less than or equal to the port
number specified in the filter.
Equal: For the filter to match, the packet's port number must equal the port number specified in the filter.
Greater Than: For the filter to match, the packet's port number must be greater than the port number specified
in the filter.
Greater Than or Equal: For the filter to match, the packet's port number must be greater than or equal to the
port number specified in the filter.
Other filter attributes
There are three other attributes to each filter:
The filter's order (i.e., priority) in the filter set
Whether the filter is currently active
Whether the filter is set to pass (forward) packets or to block (discard) packets
69 who 513