Download Internetworking Case Studies by Mark McGregor PDF

By Mark McGregor

Half 1: Internetwork layout presents a suite of common directions for making plans internetworks and particular feedback for a number of key internetworking implementations. half 1 makes a speciality of making a choice on the fundamental applied sciences and applicable implementations for particular environments. half 2: Internetworking Case reports presents useful examples illustrating how readers can enforce Cisco platforms software program positive aspects. Case reports handle implementation matters and exhibit how you can observe positive factors. exact configuration dossier examples and community diagrams are incorporated.

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Physical access to a network link usually allows a person to tap that link, jam it, or inject traffic into it. It makes no sense to install complicated software security measures when access to the hardware is not controlled. • Security is pervasive Almost any change you make in your system may have security effects. This is especially true when new services are created. Administrators, programmers, and users should consider the security implications of every change they make. Understanding the security implications of a change is something that takes practice.

This modified code is not directly available from Cisco. The token card system relies on a physical card that must be in your possession in order to provide authentication. By using the appropriate hooks in the TACACS server code, third-party companies can offer these enhanced TACACS servers to customers. One such product is the Enigma Logic SafeWord security software system. Other card-key systems, such as Security Dynamics SmartCard, can be added to TACACS as well. Simple Network Management Protocol (SNMP) Access SNMP is another method you can use to access your routers.

68 ! 65 ! dialer-list 1 protocol IP PERMIT Multiple telephone numbers are configured for serial interface 4. The two dialer map commands have the same next hop address. The software first attempts to call the telephone number specified in the first dialer map command. If this number fails—that is, if no connection is made before the wait-for-carrier timer expires—the second number is dialed. Each of the other backup interfaces uses 2-28 Internetworking Case Studies Summary a dialer string for the backup telephone number.

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