Cisco 2501 - Router - EN Instrukcja Użytkownika Pobierz pdf (Strona 23)

Router and Switch Administrative Configurations

201

Banners

A banner is more than just a little cool—one very good reason for having a banner is to give

any and all who dare attempt to telnet or dial into your internetwork a little security notice.

And you can create a banner to give anyone who shows up on the router exactly the informa-

tion you want them to have.

Make sure you’re familiar with these four available banner types: exec process creation

banner, incoming terminal line banner, login banner, and message of the day banner (all illus-

trated in the following code):

Todd(config)#banner ?

LINE c banner-text c, where 'c' is a delimiting character

exec Set EXEC process creation banner

incoming Set incoming terminal line banner

motd Set Message of the Day banner

prompt-timeout Set Message for login authentication timeout

slip-ppp Set Message for SLIP/PPP

Message of the day (MOTD) is the most extensively used banner. It gives a message to every

person dialing into or connecting to the router via Telnet or an auxiliary port, or even through

a console port as seen here:

Todd(config)#banner motd ?

LINE c banner-text c, where 'c' is a delimiting character

Todd(config)#banner motd #

Enter TEXT message. End with the character '#'.

$ Acme.com network, then you must disconnect immediately.

Todd(config)#^Z

Todd#

00:25:12: %SYS-5-CONFIG_I: Configured from console by

console

Todd#exit

Router con0 is now available

Press RETURN to get started.

If you are not authorized to be in Acme.com network, then you must

disconnect immediately.

Todd#

47020.book Page 201 Wednesday, January 2, 2008 4:31 PM

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Cisco 2501 - Router - EN Instrukcja Użytkownika Strona 23