Encrypting Packets

teancum144

Which of the following is a form of encrypting packets for save, secure data transmission within a network?
A. RAS
B. PPTP
C. IPSec
D. ICA

The answer is C. Why is B not the answer? Is it because the question states "within a network"?

paulgswanson

The PPTP specification does not describe encryption or authentication features and relies on the PPP protocol being tunneled to implement security functionality.

Where as IpSec:
is a protocol suite for securing Internet Protocol (IP) communications by authenticating and encrypting each IP packet of a communication session.

So basically what it boils down to is (from how i understand it anyways) PPTP secuirty is optional (because it doesn't have specific security functionality in its protocol) where as IPsec can use its own security instead of relying on other services