5. Configuring the FrameSaver SLV Router

IP Filtering

When NAT is enabled and the IP filters are active, filtering is done on the Ethernet port: upstream first, then downstream.

TUpstream: From the client to the server

Downstream: From the server to the client

Land Bug Prevention

The router drops all packets received on a network PVC interface or the Ethernet interface when the Source IP address is the same as the Destination IP address.

Smurf Attack Prevention

The router ignores requests to send an ICMP echo reply to the broadcast address and ICMP echo requests with a destination of the broadcast address.

Provisioning the Router Interface

The FrameSaver SLV Router defaults to bridge mode. Routing without bridging, and simultaneous routing and bridging, are also options.

Use the bridge command from the router’s CLI to configure the bridge and routing attributes. Also, enter an Ethernet IP address and a DHCP IP address.

Refer to Appendix C, Router CLI Commands, Codes, and Designations, for command line syntax and information about CLI commands. For a list of default settings, see CLI Command Default Settings in Appendix D, Router Command Line Summaries and Shortcuts.

9128-A2-GB20-80

September 2002

5-15

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Paradyne 9126-II, CSU, DSU Provisioning the Router Interface, IP Filtering, Land Bug Prevention, Smurf Attack Prevention