34,333
edits
Changes
→Layer 2 Tunneling Protocol (L2TP)
Some advantages of L2TP over PPTP include greater security, support for public key insfrastrcuture (PKI) and header compression.
== Internet Protocol Security (IPSec) ==
Internet Protocol Security (IPSec) is used for the authentication and encapsulation of communications over a secure Virtual Private Network (VPN) and operates at the Network Layer of the OSI model.
IPSec provides authentication and data encapsulation services through the Internet Key Exchange Protocol (IKE). The IKE is a key management standard designed to specify separate key protocols for use during data encryption. IKE works within the Internet Security Association and Key Management Protocol which defines the key and authentication data appended to each transmitted packet.
IPSec provides two key services. The ''Authentication Header'' (AH) service provides a mechanism for checking the authenticity of a data packet header allowing the authentication of the sender to be verified. The ''Encapsulating Security Payload (ESP)'' provides authentication of both the sender in addition to the encryption of the data contained in the packet (i.e the ''payload'').
== 802.11x Wireless Connections ==
