You need to make sure that you know how to verify IP access- list configurations and how to monitor their usage. Access lists can be quite deceiving, even for the most experienced network administrator. Read the full story

Integrated Services Digital Network (ISDN) is a very popular type of connectivity, if you can get it. It provides enough bandwidth to allow voice and data transmission at fast speeds, making it very useful for telecommuters. Read the full story

This section looks at the tools provided to verify the configuration and connectivity on a Cisco IOS router. You’ll examine a router’s configuration and learn how to view the configuration, status, and statistics on a router’s interface. Read the full story

This section talks about extended access lists, which can filter data traffic at more specific variables. Let’s take a close look at these lists and then check out an actual production router’s configured access lists. Read the full story

Essentially, access lists are lists of conditions; they’re powerful tools that control access both to and from network segments. They can filter unwanted packets and can be used to implement security policies. Read the full story