User Manual

Enterasys X-Pedition User Reference Manual 369
Chapter 22
Access Control List
Configuration Guide
This chapter explains how to configure and use Access Control Lists (ACLs) on the XP. ACLs are
lists of selection criteria for specific types of packets. When used in conjunction with certain XP
functions, ACLs allow you to restrict Layer-3/4 traffic going through the router.
This chapter contains the following sections:
• ACL Basics on page 370 explains how ACLs are defined and how the XP evaluates them.
• Creating ACLs on page 374 describes how to create new ACLs and ACL rules.
• Applying ACLs on page 375 describes the different kinds of ACLs: Interface ACLs, Service
ACLs, Layer-4 Bridging ACLs, and Profile ACLs, and gives examples of their usage.
Note: You may not apply ACLs to interface EN0 of the control module.
• Modifying ACLs on page 382 explains how to edit ACLs remotely or by using the XP’s built-in
ACL Editor function.
• Enabling ACL Logging on page 384 explains how to log information about packets that are
permitted or denied because of an ACL.
• Monitoring ACLs on page 385 lists the commands you can use to display information about
ACLs active on the XP.