Allied Telesis AR450S Guide de l'utilisateur télécharger pdf (Page 18)

18 AR400 Series Router User Guide

Software Release 2.5.2

C613-02034-00 REV A

Choosing a Password

All users, including managers, should take care in selecting passwords. Tools

exist that enable hackers to guess or test many combinations of login names

and passwords easily. The User Authentication Facility (UAF) provides some

protection against such attacks by allowing the manager to set the number of

consecutive login failures allowed and a lockout period when the limit is

exceeded.

However, the best protection against password discovery is to select a good

password and keep it secret. When choosing a password:

■ Do make it six or more characters in length. The UAF enforces a minimum

password length, which the manager can change. The default is six

characters.

■ Do include both alphabetic (a–z) and numeric (0–9) characters.

■ Do include both uppercase and lowercase characters. The passwords

stored by the router are case-sensitive, so “/jointfilesconvert/418978/bgz4kal” and “Bgz4Kal” are

different.

■ Do avoid words found in a dictionary, unless combined with other random

alphabetic and numeric characters.

■ Do not use the login name, or the word “password” as the password.

■ Do not use your name, your mother’s name, your spouse’s name, your

pet’s name, or the name of your favourite cologne, actor, food or song.

■ Do not use your birth date, street number or telephone number.

■ Do not write down your password anywhere.

Make sure you remember the new password created as you cannot retrieve a

lost password. Recovery of access to the router is complex.

Once you have logged into the manager account you are able to enter

commands from this guide and from the AR400 Series Router Software Reference.

Using the Commands

You control the router with commands described in this document and in the

AR400 Series Router Software Reference. While the keywords in commands are

not case sensitive, the values entered for some parameters are (especially

passwords). The router supports command line editing and recall. Command

line editing functions and keystrokes are shown in Table 2 on page 18.

Table 2: Command line editing functions and keystrokes .

Function VT100 Terminal Dumb terminal

Move cursor within command line ←, → Not available

Delete character to left of cursor [Delete] or [Backspace] [Delete] or [Backspace]

Toggle between insert/overstrike [Ctrl/O] Not available

Clear command line [Ctrl/U] [Ctrl/U]

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Allied Telesis AR450S Guide de l'utilisateur Page 18