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and welcome back in the authentication phase of aaa we have some fantastic technical options for validating who the user is one of those options is of course to use a password now passwords however can be problematic because if an attacker learns or steals a password the attacker could use that password to impersonate the user also suppose we have a password that is used with plain text protocols including http ftp or other protocols such as password authentication protocol or pap which you can use on the back end iamp;#39;ll talk more about that in just a moment in those cases where weamp;#39;re using a password with plain text protocols that password could be compromised just by somebody eavesdropping or sniffing the network so hereamp;#39;s an example of that imagine we have bob here and bob is at his computer which is connected to this port on the switch and letamp;#39;s imagine also that weamp;#39;re doing 802.1x in this environment which basically means we want to make bob p