Access Control Lists (ACLs)
sponsored by Global Knowledge

In this white paper, we'll take a look at access control lists, often referred to as access lists or ACLs (sometimes pronounced "ackels"). In Cisco IOS, ACLs are used for many things, including but not limited to:

  • Filtering data packets (firewalling)
  • Controlling Telnet or SSH access to a router or switch
  • Filtering routing protocols
  • Specifying Quality of Service (QoS)
  • Controlling encryption
  • Controlling NAT (Network Address Translation)
  • Controlling Dial-on-Demand
  • The idea of an access list is straightforward: it permits some things, and denies others. What exactly is being “permitted” or “denied” varies according to the application of the ACL. Although access lists for other protocols (such as IPX, AppleTalk, MAC addresses, etc.) exist, we'll be focusing on IP access lists. In general, only routers and multi-layer switches understand IP access lists.

    (THIS RESOURCE IS NO LONGER AVAILABLE.)
     
    Available Resources from Global Knowledge
    See what other users are reading via our Daily Top 50 Report
    .

    About TechTarget:

    TechTarget provides enterprise IT professionals with the information they need to perform their jobs - from developing strategy, to making cost-effective IT purchase decisions and managing their organizations' IT projects - with its network of technology-specific Web sites, events and magazines

    All Rights Reserved, Copyright 2000 - 2014, TechTarget | Read our Privacy Statement