Introduction
Secure communication between users, offices and partners
VPN types:
- IPSec VPN
- Two phase protocol
- Phase I
- Two peers establish communication over a Secured and authenticated channel
- Phase I exchange is accomplished by One of the two following modes
- Phase II
- Negotiates Security Associations
- Phase II exchange is accomplished by Quick mode
- SSL VPN
- Clientless
- Uses standard browsers as the client
- Ideal for web based applications
- Thin Client
- Java applet on user's PC
- Ideal for specific TCP port applications such as email and telnet
- Full Tunnel (SVC)
- SSL VPN Client (SVC) on user's PC
- Independent of applications
- IP layer