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IPSec Tunnel and IPSec over GRE

what are the differences between IPSectunnel and IPSec over GRE tunnel?

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Re: IPSec Tunnel and IPSec over GRE

IPSec tunnel is your IP data entrypted/tunneled in IPSec packet.

IPSec over GRE is when you first put IP packet in a GRE (another IP) packet and then apply IPSec encryption/tunneling.

Thanks.

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