Which extended ACL entry command option matches the specified range of ports?

Which extended ACL entry command option matches the specified range of ports?

• A. next lowest-number highest-number
• B. eq lowest-number highest-number
• C. range lowest-number highest-number
• D. between lowest-number highest-number

Answer: (C)

The correct answer is "range lowest-number highest-number" because this command option in an extended Access Control List (ACL) allows you to specify a range of port numbers for matching purposes. When defining an ACL, it's crucial to control traffic based on both source and destination IP addresses as well as the port numbers used by protocols. The “range” keyword effectively tells the ACL to permit or deny traffic that uses any port within the specified range, making it versatile for scenarios where you need to manage multiple ports rather than a single one. Understanding the functionality of ACLs is crucial for network security and management, as it helps to control the flow of traffic based on the defined rules. This command significantly enhances your ability to manage traffic efficiently by grouping related ports together, especially in environments where multiple services operate on various ports within a given range.

The correct answer is "range lowest-number highest-number" because this command option in an extended Access Control List (ACL) allows you to specify a range of port numbers for matching purposes. When defining an ACL, it's crucial to control traffic based on both source and destination IP addresses as well as the port numbers used by protocols. The “range” keyword effectively tells the ACL to permit or deny traffic that uses any port within the specified range, making it versatile for scenarios where you need to manage multiple ports rather than a single one.

Understanding the functionality of ACLs is crucial for network security and management, as it helps to control the flow of traffic based on the defined rules. This command significantly enhances your ability to manage traffic efficiently by grouping related ports together, especially in environments where multiple services operate on various ports within a given range.