Question

a transport layer security (tls) virtual private network (vpn) requires a remote access server listening on port 443 to encrypt traffic with a client machine. an ipsec (internet protocol security) vpn can deliver traffic in two modes. one mode encrypts only the payload of the ip packet. the other mode encrypts the whole ip packet (header and payload). what are these two modes? (select all that apply.)

Answer 1

There are two ways that an IPSec (Internet Protocol Security) VPN can transport communications. One encryption method just protects the IP packet's payload. The other mode completely encrypts each IP packet (header and payload).

Vehicle type

The transport mode, which is IPSec's default mode, offers end-to-end security. Communications between a client and a server can be shielded. When using the transport mode, just the IP payload is encrypted. IP payload is protected by ESP or AH.

Internet-based

Use tunnel mode for network-to-network, host-to-host, and host-to-host Internet connections. When in tunnel mode, the complete IP packet (data plus message headers) is encrypted and/or authenticated.

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