Specifications

86
Figure 9.5b The dierence between HTTPS (SSL/TLS) and VPN is that in HTTPS only the actual data of a packet is
encrypted. With VPN, the entire packet can be encrypted and encapsulated to create a secure “tunnel”. Both tech-
nologies can be used in parallel, but it is not recommended since each technology will add overhead and decrease the
performance of the system.
VPN tunnel
PACKET
HTTPS or SSL/TLS encryption
DATA
Secure Non-secure
CHAPTER 9 - NETWORK TECHNOLOGIES