Re: A / V / Text encryption methods

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Paul Rubin <http> wrote:
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IPsec (lowercase `s') works at the IP level, either by inserting an
additional header between the IP header and the next-layer protocol, or
by encapsulating an entire IP packet.  It can therefore carry any
protocol based on IP, including TCP, UDP, ICMP, and others.

Use the `tunnel mode' (which does indeed encapsulate the entire packet);
`transport mode' fails to protect the integrity of the outer IP header.

-- [mdw]

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