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Filtering example #2
Suppose a filter is configured to block all incoming IP packets with the source IP address of
200.233.14.0, regardless of the type of connection or its destination. The filter would look
like this:
This filter blocks any packets coming from a remote network with the IP network address
200.233.14.0. The 0 at the end of the address signifies
any
host on the class C IP net-
work 200.233.14.0. If, for example, the filter is applied to a packet with the source IP
address 200.233.14.5, it will block it.
In this case, the mask, must be set to 255.255.255.0. This way, all packets with a source
address of 200.233.14.x will be matched correctly, no matter what the final address byte
is.
☛
Note:
The protocol attribute for this filter is
Any
by default. This tells the filter to
ignore the IP protocol or type of IP packet.
Summary of Contents for 3342
Page 1: ...Netopia Software User Guide April 2006 Netopia 2200 and 3300 Series Gateways Version 7 6 ...
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Page 150: ...150 Example filter set page This is an example of the Netopia filter set page ...
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