Section cuatro. Passwords and you can Right Accounts
Section step 3 managed earliest availability control and utilizing passwords in your neighborhood and off access manage servers. It chapter covers just how Cisco routers store passwords, how important it is the passwords selected is good passwords, and ways to ensure that your routers make use of the very secure strategies for space and you can addressing passwords. It then covers privilege levels and the ways to incorporate him or her.
Password Security
Cisco routers has about three ways of representing passwords about setting file. Regarding weakest so you can strongest, it are obvious text message, Vigenere encryption, and you will MD5 hash algorithm. Clear-text passwords was portrayed within the people-readable format. Both the Vigenere and you will MD5 encoding actions rare passwords, but for each and every possesses its own strengths and weaknesses.
Vigenere Versus MD5
Part of the difference between Vigenere and you can MD5 is the fact Vigenere is actually reversible, when you are MD5 is not. Getting reversible makes it easier to have an opponent to-break the latest encoding acquire the latest passwords. Getting unreversible means an attacker have to fool around with reduced brute push guessing attacks so that you can get the passwords.