Cisco Systems CCNA 2 Login banners, Configuring message-of-the-day Motd, Host name resolutions

Ask students the following questions:

•Which configuration mode is used to enter the description?

•What are the commands to add a description to an interface?

3.2.4Login banners

Students must realize that a login banner can be seen by anyone.

This login banner should be a warning that users should not attempt to log in unless they are authorized. A message such as “This is a secure system, authorized access only!” instructs unwanted intruders to beware. A login banner is a message that is displayed at login and can be used to convey messages that affect all network users such as system shutdowns. Make sure students understand that these banners should be warnings and not invitations.

Ask students the following questions:

•Who can see a login banner?

•What is an example of a good login banner?

•Where is the login banner displayed?

3.2.5Configuring message-of-the-day (MOTD)

Amessage-of-the-day (MOTD) banner can be displayed on all connected terminals. Students must enter global configuration mode to configure a message-of-the-day banner. They should use the banner motd command, followed by a space and a delimiting character such as the pound sign (#). Next, students should add a message of the day followed by a space and the delimiting character again. Instruct students to follow these steps to display a message-of-the- day:

1.Enter global configuration mode with the configure terminal command.

2. Enter the banner motd # message of the day # command.

3.Save changes with the copy running-config startup-config or copy run start command.

3.2.6Host name resolutions

Protocols such as Telnet use host names to identify network devices or hosts. Network devices such as routers must be able to associate host names with IP addresses to communicate with other IP devices.

Each unique IP address can have a host name associated with it. The Cisco IOS software maintains a cache of host name-to-address mappings for use by EXEC commands. A host name resolution is the process a computer system uses to associate a name with a network address.

35 - 238 CCNA 2: Routers and Routing Basics v3.1 Instructor Guide – Module 3 Copyright ♥ 2004, Cisco Systems, Inc.