BGP Filtering Extended Access-List

Scenario:

Ever since Diablo was defeated Deckard Cain decided to become a network engineer. Two decades have passed and the village of Tristram has upgraded their network for inter-AS connectivity. Recently some security issues have been reported and Deckard asked you to help him to filter some of the prefixes through BGP. Unfortunately the router does not support prefix-lists so you'll have to use access-lists to accomplish this.

Goal:

• All IP addresses have been preconfigured for you.
• Configure EBGP between router Tristram and Sanctuary.
• Advertise the loopback interfaces on both routers in BGP.
• Configure a summary that advertises 10.0.0.0/8 towards router Sanctuary.
• Configure an extended access-list on router Sanctuary that will block the 10.0.0.0/8 prefix but allows all other prefixes.
• Configure an extended access-list on router Tristram that blocks network 10.2.2.0/24.

It took me 1000s of hours reading books and doing labs, making mistakes over and over again until I mastered all the routing protocols for CCNP.

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You will learn all the secrets about BGP, access-lists, filtering and more.

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IOS:

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