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Access Control List Basics and Extended Ping

The LAN users connected to the Vista router are concerned about access to their network from hosts on network 10.0.0.0. You must use a standard access list to block all access to Vista’s LAN from network 10.0.0.0/24. | 1.4.3 Introductory Lab 3 Access Control List Basics and Extended Ping Workstation 192.168.3.2 24 Objective This lab activity reviews the basics of standard and extended access lists which are used extensively in the CCNP curriculum. Scenario The LAN users connected to the Vista router are concerned about access to their network from hosts on network 10.0.0.0. You must use a standard access list to block all access to Vista s LAN from network 10.0.0.0 24. You must also use an extended ACL to block network 192.168.3.0 host access to Web servers on the 10.0.0.0 24 network. Step 1 Build and configure the network according to the diagram. Use RIPv1 and enable updates on all active interfaces with the appropriate network commands. The commands necessary to configure SanJose1 are shown here as an example SanJose1 config router rip SanJose1 config-router network 192.168.1.0 SanJose1 config-router network 10.0.0.0 Use the ping command to verify your work and test connectivity between all interfaces. Step 2 Check the routing table on Vista using the show ip route command. Vista should have all four networks in its table. Troubleshoot if necessary. 1 - 4 Semester 5 Advanced Routing v2.0 - Lab 1.4.3 Copyright 2001 Cisco Systems Inc. Access Control List Basics Access Control Lists ACLs are simple but powerful tools. When the access list is configured each statement in the list is processed by the router in the order in which it was created. If an individual packet meets a statement s criteria the permit or deny is applied to that packet and no further list entries are checked. The next packet to be checked starts again at the top of the list. It is not possible to reorder an access list skip statements edit statements or delete statements from a numbered access list. With numbered access lists any attempt to delete a single statement results in the entire list s deletion. Named ACLs NACLs do allow for the deletion of individual statements. The following concepts apply to both .