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Dual Ethernet ProxyServer User Guide
Filtering
The IP Filtering Setup dialog provides tabs that let you configure the ProxyServer so that IP
packets that are received by the server can be selectively filtered or forwarded based on their
addresses or by the protocol ports to which they are destined.
The three filtering methods are:
• IP Protocol Port Based Filtering - In this method, IP packets can be filtered based on their
specific purposes; e.g. Telnet packets (TCP based) or TFTP (UDP based) can be filtered or
forwarded.
• IP Address Based Filtering - In this method, filtering is based on the source and destination
IP addresses in the packet.
• ICMP Filtering - Separate filtering support is provided for specific kinds of received ICMP
packets.
For a more detailed description of filtering, refer to the on-line help provided with your Firewall
software.