System Administration Guide: Security Services

Advice on Choosing a Password

Your password can include almost any character that you can type. The main exceptions are the Control keys and the Return key. A good password is a password that you can remember readily, but no one else can easily guess. Examples of bad passwords include the following:

A good password is at least eight characters long. Moreover, a password should include a mix of characters, such as uppercase and lowercase letters, numbers, and punctuation marks. Examples of passwords that would be good if they didn't appear in this manual include the following:

Caution – Caution –

Don't use these examples. Passwords that appear in manuals are the first passwords that an intruder will try.