It is highly
recommended that you use Type 5 encryption instead of Type 7 where possible. Type 5 encryption is used by the enable
secret command to specify an additional layer of security over the enable password command. The enable secret
command takes preference over the enable password command. The username secret command also uses Type 5
encryption.
Tip
The following URL is an index of password recovery procedures for most Cisco products:
http://www.cisco.com/en/US/products/sw/iosswrel/ps1831/products_tech_note09186a00801746e6.shtml
Creating Strong Passwords
Creating strong passwords is one of the most important issues in device security. Users at times create very simple passwords
using their pet names, maiden name, birth dates, or other similar known terms. These passwords are easily crackable using
dictionary or brute force attacks. An alternative would be to use a completely random combination of numbers and symbols, that is not very practical and very difficult to remember. To help remember passwords, users write them down and keep them
under their keyboard or save them in a text file on their computers. These practices are counter to good security practices.
A strong password is one that is at least eight to ten characters and includes a combination of letters (uppercase and lowercase
combination), numbers, and special symbols (example: !@#$%^&,.
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