Comptia Security Plus | Access Control List

Comptia Security Plus | Access Control List

An access control list (ACL) is a list of access control entries (ACE). Each ACE in an ACL identifies a trustee and specifies the access rights allowed, denied, or audited for that trustee.

In the case of Networking ACLS, they are installed in networking devices (Routers and switches) with the sole purpose of filtering traffic. This is done by using pre-defined rules that decided which packets transferred. Source and destination IP addresses also play a major role in this decision.

Network Access Control List on a network is usually done on the firewall. When setting up an ACL the first question we need to know is what traffic we want to allow or deny on the network.

When creating access control lists (ACL) its important to note access lists are processed from top to bottom. Access lists are usually permit or deny a proptcol from a source IP address/ Source Port to a destination IP and Destination port.

Note: At the end of the access control list there is usually an IMPLICIT DENT ALL

 

Packet filtering improves network security by decreasing network traffic access, restricting device and user access to the involved network.

Cybersecurity threats have always been on the rise, and ACL is one of the many ways enforced to protect networks and quality of service in organizations. ACLs are implemented to solve problems including:

1. Data breaches of confidential information
2. Overtaking of network bandwidth by irrelevant services thereby denying resources to important services
3. Viruses and malicious code from entering the organization


ACLs achieve their main objective through the identification and control of network access behaviors, traffic flow control, and granular monitoring.




Comptia Security Plus | Access Control List

Comptia Security Plus | Access Control List

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