Configuring Security
Use this table to configure the router with some security measures.
Step
Task
Specify a password to prevent unauthorized access to the router.
1
Configure the router with a host name, which is used in prompts
2
and default configuration file names.
For PPP authentication, the host name entered with this
command must match the username of the central-site router.
Configuring the Fast Ethernet Interface
Use this table to configure the Fast Ethernet interface, which connects your router to the local
network.
Step
Task
Enter configuration mode for the Fast Ethernet interface.
1
Configure this interface with an IP address and a subnet mask.
2
This interface must have an IP address assigned in order for the
serial interface to be configured for IP unnumbered routing.
Enable IPX routing on this interface, assign the IPX network
3
number, and configure the interface for IPX SAP encapsulation.
Configure a secondary IPX network on this interface that uses
4
the default NetWare encapsulation.
5
Enable the interface and the configuration changes you have just
made on the interface.
Exit configuration mode for this interface.
6
Configuring the Serial Interface
Use this table to configure the serial interface, which connects your router to the central-site router.
Step
Task
Enter configuration mode for the serial interface.
1
Add a description of this interface to help you remember what is
2
attached to it.
3
Enable IP routing on this interface without assigning an IP
address.
Enable IPX routing on this interface and assign an IPX network
4
number.
Router Prompt
Command
enable password <1700user>
Router(config)#
hostname 1700
Router(config)#
Router Prompt
Command
interface fastethernet0
1700(config)#
ip address 10.1.1.1 255.0.0.0
1700(config-if)#
ipx network 100 encapsulation sap
1700(config-if)#
ipx network 100 encapsulation
1700(config-if)#
novell-ether secondary
1700(config-if)#
no shutdown
exit
1700(config-if)#
Router Prompt
Command
interface serial0
1700(config)#
description leased line to
1700(config-if)#
headquarters
1700(config-if)#
ip unnumbered FastEth0
ipx network AAAA
1700(config-if)#
Configuring Security
Configuring a Leased Line 4-3
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