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Cisco Exam
10.5. Key Management
We recommend creating user keys at least 1024 bits long. Protect your key with a good passphrase. Make it lengthy and use a mixture of lowercase, uppercase, numeric, and symbolic characters. Don't use words found in a dictionary.
Empty passphrases should be avoided unless you absolutely need to use one, for example, in an automated batch script. [
Section 11.1.2.2, "Using a plaintext key"
]
10.4. Per-Account Configuration
10.6. Client Configuration
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