How to crack Router Passwords

http://www.vadapt.com/2009/04/cracking-cisco-passwords-with-john-the-ripper/ http://www.question-defense.com/2011/08/30/crack-juniper-router-passwords-juniper-password-hash-details http://www.governmentsecurity.org/forum/topic/27416-cisco-password-decrypt-question/ http://www.ethicalhacker.net/component/option,com_smf/Itemid,54/topic,2196.msg9264/ http://www.wikihow.com/Crack-Cisco-Switch-Password-for-Catalyst-2950 http://comments.gmane.org/gmane.comp.security.openwall.john.user/2533