X.509: A widely used specification for digital certificates, X.509 binds
an entity's distinguished name to its public key.
DHCP: Dynamic Host Configuration Protocol allows a server to assign Internet
Protocol addresses to connected computers on the fly.
IPSec: Internet Protocol security is a set of security measures for verifying
the originating address in the header of packets sent over the Internet.
L2TP: Layer 2 Tunneling Protocol is a standard tunneling protocol for
virtual private networks. L2TP also supports non-IP protocols, including
AppleTalk and IPX.
3DES: Data Encryption Standard is a 56-bit private-key algorithm developed
by IBM Corp. in 1977 for encrypting data. With 3DES, the algorithm is applied
to the data three times in succession.