Which protocol is an open standard protocol framework that is commonly used in VPNs, to provide secure end-to-end communications?
A. PPTP
B. IPsec
C. RSA
D. L2TP
Which protocol is an open standard protocol framework that is commonly used in VPNs, to provide secure end-to-end communications?
A. PPTP
B. IPsec
C. RSA
D. L2TP