Standard Access Control List

Standard Access Control Lists (ACL) are Cisco IOS-based commands used to filter packets on Cisco routers based on the source IP Address of the packet. Extended Access Control Lists have the ability to filter packets based on source and destination IP addresses.

Numbered Standard Access Control Lists

Numbers between 1 and 99, or Any Number between 1300 and 1999 can be used in a Standard ACL. The number used in this range doesn't affect how the ACL is processed or which ACL is more important to the router.A standard ACL is concerned with only one factor, the source IP address of the packet. The destination is not considered.

Named Standard Access Control Lists

The difference between Named and Numbered ACL's is the name associated with the ACL and not the number. Names are easier to remember than a number.

Configuration of Named and Standard Access Control Lists

Creating Numbered Standard Access Control Lists

From Global Configuration mode, type in:

 access-list access-list-number [deny/permit] source-ip-address [source wildcard mask]

Creating Named Standard Access Control Lists

From Global configuration mode type:

 ip access-list standard [name]
  deny [source ip or keyword any] [wildcard mask or keyword any]
  OR
  permit [source ip or keyword any] [wildcard mask or keyword any]

See also

• Access Control List
• Role-Based Access Control (RBAC)