Standard Access List ACL Full Explanation and Configuration For Cisco CCNA With Packet Tracer
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Standard Access List ACL Configuration For Cisco CCNA 2018
Access-list (ACL) is a set of rules defined for controlling the network traffic and reducing network attack. ACLs are used to filter traffic based on the set of rules defined for the incoming or out going of the network.
ACL features –
The set of rules defined are matched serial wise i.e matching starts with the first line, then 2nd, then 3rd and so on.
The packets are matched only until it matches the rule. Once a rule is matched then no further comparison takes place and that rule will be performed.
There is an implicit deny at the end of every ACL, i.e., if no condition or rule matches then the packet will be discarded.