![]() ![]() When you define an ACL on a routing device for a specific interface, all the traffic flowing through will be compared with the ACL statement which will either block it or allow it. In this article, we will go deep into the functionality of ACLs, and answer the following common questions about ACLs?Īccess Control Lists “ACLs” are network traffic filters that can control incoming or outgoing traffic.ĪCLs work on a set of rules that define how to forward or block a packet at the router’s interface.Īn ACL is the same as a Stateless Firewall, which only restricts, blocks, or allows the packets that are flowing from source to destination. In the computer networking world, an ACL is one of the most fundamental components of security.Īn Access Control Lists “ ACL” is a function that watches incoming and outgoing traffic and compares it with a set of defined statements.
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