howto/IPsecWithPublicKeys.md
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### Notes
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1. Best practice is to generate the private key on the router itself, and not transfer it to another machine. This part should be kept secret!
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2. Generate a key of at least 2048 bits, preferably 4096 if both ends support it.
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-3. Some implementations support more than one key format. The examples here only show how to use one of them (usually PEM) for brevity.
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+3. Some implementations support more than one key format. The examples here only show how to use one of them (usually PEM) for brevity.
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+4. RFC 3110 format is the same as that described in RFC 2537. The former obsoletes the latter.
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