Listing 2 TACACS+ client configuration

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! Backup user 
username backdooruser password AreallyhardtoGuessPassword
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tacacs-server host 192.168.42.3 key SecureTacKey
no tacacs-server directed-request
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aaa new-model
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aaa authentication login default group tacacs+ local
aaa authentication enable default group tacacs+ enable
aaa authorization exec default group tacacs+ local
aaa accounting exec default start-stop group tacacs+
aaa accounting commands 15 default start-stop group tacacs+
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