ZyXEL Communications Prestige 662HW Series, User Manual

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Prestige 662HW Series User’s Guide
VPN Screens 16-21
When there is outbound traffic but no inbound traffic, the SA times out automatically after two
minutes. A tunnel with no outbound or inbound traffic is "idle" and does not timeout until the SA
lifetime period expires. See
section 16.6 on keep alive to have the Prestige renegotiate an IPSec SA
when the SA lifetime expires, even if there is no traffic.
Figure 16-9 VPN: SA Monitor
The following table describes the fields in this screen.
Table 16-10 VPN: SA Monitor
LABEL DESCRIPTION
No This is the security association index number.
Name This field displays the identification name for this VPN policy.
Encapsulation This field displays Tunnel or Transport mode.
IPSec Algorithm This field displays the security protocols used for an SA.
Both AH and ESP increase Prestige processing requirements and communications latency
(delay).