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What is a port ACL?
The port ACL (PACL) feature provides the ability to perform access control on specific Layer 2 ports. A Layer 2 port is a physical LAN or trunk port that belongs to a VLAN. Port ACLs are applied only on the ingress traffic.
What are extended ACLs?
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. Needless to say, it is very granular and allows you to be very specific.
Where do you put an extended ACL?
Extended ACL “Should be placed closest to the source network.” because it filter base on much more specific criteria such as source, destination ip address, protocol and port number.
What are the advantages of extended ACL?
The biggest advantage of an extended access control list is the ability to distinguish and filter packets based on source address, destination address, protocol and port number. This gives greater flexibility to the system administrator in designing the network.
What is the standard ACL range?
Table 1 – ACL Number Ranges
| Protocol | Range |
|---|---|
| Standard IP | 1–99 and 1300–1999 |
| Extended IP | 100–199 and 2000–2699 |
| Ethernet type code | 200–299 |
| Ethernet address | 700–799 |
Can we configure ACL on switch?
The switch can use ACLs on all packets it forwards. You configure access lists on a switch to provide basic security for your network. If you do not configure ACLs, all packets passing through the switch could be allowed onto all parts of the network.
What is the difference between standard ACL and extended ACL?
The main difference between Standard and Extended ACL is1-to-many traffic filtering. As standard can only works on either source IP or destination IP, suggested to make as close as to destination IP. Extended works on both source and destination IP as well as on some other aspects like protocols, ports they even make logs too.
What is system access control list?
In a Microsoft context, the Access Control List (ACL) is the list of a system object’s security information that defines access rights for resources like users, groups, processes or devices. The system object may be a file, folder or other network resource.
What are the types of access control lists?
There are several types of access control lists and most are defined for a distinct purpose or protocol. On Cisco routers, there are two main types: standard and extended. These two types are the most widely used ACLs and the ones I will focus on in this and future articles, but there are some advanced ACLs as well.
What are the benefits of access control list?
Benefits of IP Access Lists. Access control lists (ACLs) perform packet filtering to control the flow of packets through a network. Packet filtering can restrict the access of users and devices to a network, providing a measure of security. Access lists can save network resources by reducing traffic.