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ACL’s control the flow of traffic through a device and can prevent unwanted traffic from a particular source to a specific destination. This lab will discuss and demonstrate numbered access list which are not very common due to the newer named access-list advantages.
If there is no ACL the router switches the packet out that interface to its destination. If there is an ACL the router checks the packet against the access list
How routers use Access Lists (Outbound Port - Default) The router checks to see if the packet is routable. If it is it looks up the route in its routing table. The router then checks for an ACL on that outbound interface. If there is no ACL the router switches the packet out that interface to its destination.
An ACL consists of sequential series of statements known as an Access Control Entry (ACE). Each ACE specifies a matching criteria and an action which can be either Permit or deny.
Learn how to configure an ACL to control specific networks and/or host access to establish an exec session via VTY lines used for remote administration.
In this Lab we cover all basics plus EIGRP , GRE , ACL ...etc. Lab pdf attached with pkt file configured till part 5 of it. See you in Lab 2 where we will cover the following topics: • Cisco Router as DHCP relay agent • OSPFv2 multiple areas • NAT static, dynamic and PAT • BGP • PPP with CHAP • IOS 15 Licensing
How routers use Access Lists (Outbound Port - Default) The router checks to see if the packet is routable. If it is it looks up the route in its routing table. The router then checks for an ACL on that outbound interface. If there is no ACL the router switches the packet out that interface to its destination.
