ZoneAlarm security software monitors the VPN protocols listed in the table below.
Networking Protocol
|
Explanation and Comments
|
AH
|
Authentication Header Protocol
|
ESP
|
Encapsulating Security Payload protocol
|
GRE
|
Generic Routing Encapsulation protocol
|
IKE
|
Internet Key Exchange protocol
|
IPSec
|
IP Security protocol.
|
L2TP
|
Layer 2 Tunneling protocol. L2TP is a more secure variation of PPTP.
|
LDAP
|
Lightweight Directory Access protocol
|
PPTP
|
Point-to-Point Tunneling protocol
|
SKIP
|
Simple Key Management for Internet Protocol
|
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