The Need for Intrusion Detection
The need for intrusion detection is based on the increasing number of threats faced by the computer networks in today's world. Here are some of the fundamental reasons why so many attacks are being launched on computer networks: Computer networks are used to carry information that is valuable not only to the intended receiver but can also be valuable to anyone else who gets his or her hands on it. Therefore, computer networks are an important source of information theft. Thi..
The point-to-multipoint model is very similar to the point-to-point model. It provides one subnet for an entire cloud, and it maintains host routes to all the routers within the cloud. This also allows the use of non-meshed routers. TIP A new command was recently introduced to overcome the problem of sending multicast OSPF packets on the media that form dynamic connections, such as ATM SVC. By default, OSPF sends multicast packets to discover neigh..
Enhanced IGRP and Passive Interface
If you do not want to enable Enhanced IGRP on an interface, you must set it in passive mode. This prevents Enhanced IGRP from sending multicast hellos to an interface. The question then becomes: When would you want to set a passive interface? There are situations in which you should set Enhanced IGRP in passive mode. First, you would use the passive mode when a router is connected to a large number of customer sites and you do not want to run Enhanced IGRP on th..
This lab should assist you in your final preparation for the CCIE Security lab exam. Sample solutions are provided here, but you need to research other various solutions on your own. Feel free to modify the questions to suit any design scenario and discover new IOS commands by using the Cisco Universe CD-ROM. This lab is not the only tool you should use; rather, it is provided here to demonstrate the minimum level of difficulty you will encounter when attempting the CCIE Sec..
Configuring SDLC for Multidrop Connections
SDLC supports multidrop connections. These are serial links that connect to several downstream devices in series. Each device has its own SDLC address, which must be configured in the router. The global DLSw configuration for this example is omitted here because it is identical to the previous example: dlsw-branch#configure terminal Enter configuration commands, one per line. End with CNTL/Z. dlsw-branch(config)#interface Serial1 dlsw-branch(config-if)#description Conn..
