The following statement about IPSec VPN is correct ?qo

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Andrea Ciovati · Accepted Answer

The two routers establish IPSecVPN in main mode, and from the 5th packet (included), the payload's data will be encrypted.

Andrea Ciovati · Answer

Two routers establish an IPSec VPN in brutal mode, so that the two devices can interact with a minimum of 4 messages to establish a tunnel.

Andrea Ciovati · Answer

Brutal mode can support NAT traversal, while main mode does not support NAT traversal.

Andrea Ciovati · Answer

The two routers can establish OSPF neighbor relations and exchange intranet routes through the IPSec VPN tunnel

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