AirLive RS-2500 - Manual (Page 109)

16. VPN
AirLive RS-2500 User’s Manual 104
 Optional Item (Figure 16-9).
Figure 16-9 Optional Item WebUI
 Main Mode:
 This is another first phase of the Oakley protocol in establishing a security
association, but instead of using three packets like in aggressive mode, it uses six
packets.
 Aggressive mode:
 This is the first phase of the Oakley protocol in establishing a security association
using three data packets.
 GRE/IPSec:
 The device Select GRE/IPSec ( Generic Routing Encapsulation) packet seal
technology.