What is the difference between a standard ACL and an extended ACL?
Consequently, which type of ACL is better standard or extended?
It's the letter S, it is a great way to remember that standard access lists only look for source. Extended access control lists, or extended ACLs, on the other hand, they're far more powerful, they can look at source and destination, they can look at transport layer protocols such as TCP and User Data Protocol, or UDP.
Furthermore, what is an extended ACL? Extended Access Control Lists (ACLs) allow you to permit or deny traffic from specific IP addresses to a specific destination IP address and port. It also allows you to specify different types of traffic such as ICMP, TCP, UDP, etc.
Correspondingly, which benefit does an extended ACL offer over a standard ACL?
Extended ACLs can be named, but standard ACLs cannot. Unlike standard ACLs, extended ACLS can be applied in the inbound or outbound direction. Based on payload content, an extended ACL can filter packets, such as information in an e-mail or instant message.
What is a standard ACL?
A standard ACL can permit or deny trafiic based only on the source address(s). An extended ACL can permit or deny traffic based on both the source and destination address(s) as well as tcp/udp/icmp trafic types.