Cisco network security little black book by Joe Harris

By Joe Harris

With this concise, problem-solving advisor you'll how to determine community defense threats and enforce uniform safety all through your community. step by step directions and fast options may help you enforce and replace protection defenses. Plus, each configuration during this e-book used to be thoroughly demonstrated and perfected with genuine Cisco routers. No different concise consultant presents the protection services awarded during this booklet. writer- Joe Harris

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Most corporations provide access to the Internet over point−to−point links, thus providing an efficient way to access their service provider locally. The Internet community has adopted the Point−to−Point Protocol (PPP) scheme for the transmission of IP datagrams over serial point−to−point lines. PPP is a Data Link layer protocol that provides router−to−router and host−to−network connections over synchronous and asynchronous circuits. PPP has the following three main components: • It has a method for encapsulating datagrams over serial links.

Define the key chain using the command key−chain < name> in global configuration mode. This command transfers you to the key chain configuration mode. 2. Specify the key number with the key < number> command in key chain configuration mode. You can configure multiple keys. 3. For each key, identify the key string with the key−string < string> command. 4. Configure the period for which the key can be sent and received. Use the following commands: accept−lifetime {infinite|end−time|duration − seconds} send−lifetime {infinite|end−time|duration seconds} 5.

0 no auto−summary eigrp log−neighbor−changes Notice that both routers are now using a different routing protocol. This was done to demonstrate that route filters work with any routing protocol. 0 network to Router B. 25. 25: Router A configured with an outbound route filter. 252 ! 0 distribute−list 3 out Serial0/0 no auto−summary ! 0 network and has an outbound distribute−list applied to the EIGRP routing process. This should achieve the necessary results. 26. 26: Route table of Router B after applying an outbound route filter on Router A.

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