![]() This is noted in the discussion of each type. Some of these are present since Cisco IOS Software Releases 8.3 and others were introduced in later software releases. This document discusses various types of ACLs. This is noted under each access list feature. The concepts discussed are present in Cisco IOS ® Software Releases 8.3 or later. There are no specific prerequisites for this document. A discussion of these functions is outside the scope of this document. Note: ACLs might also be used for purposes other than to filter IP traffic, for example, defining traffic to Network Address Translate (NAT) or encrypt, or filtering non-IP protocols such as AppleTalk or IPX. RFC 1918 contains address allocation for private Internets, IP addresses which should not normally be seen on the Internet. RFC 1700 contains assigned numbers of well-known ports. It also contains brief descriptions of the IP ACL types, feature availability, and an example of use in a network.Īccess the Software Advisor ( registered customers only) tool in order to determine the support of some of the more advanced Cisco IOS ® IP ACL features. This document describes how IP access control lists (ACLs) can filter network traffic.
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