ZyXEL Communications P-660HN-F1, Руководство пользователя

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Chapter 16 VPN
ADSL Series User’s Guide
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16.5 Viewing SA Monitor
Click Security > VPN > Monitor to open the screen as shown. Use this screen to display and
manage active VPN connections.
A Security Association (SA) is the group of security settings related to a specific VPN tunnel. This
screen displays active VPN connections. Use Refresh to display active VPN connections. This
screen is read-only. The following table describes the fields in this tab.
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 16.6.6 on page 217 on keeping alive to have the ZyXEL Device
renegotiate an IPSec SA when the SA lifetime expires, even if there is no traffic.
Figure 109
Security > VPN > Monitor
The following table describes the fields in this screen.
16.6 IPSec VPN Technical Reference
This section provides some technical background information about the topics covered in this
chapter.
16.6.1 IPSec Architecture
The overall IPSec architecture is shown as follows.
Table 65
Security > VPN > Monitor
LABEL DESCRIPTION
No This is the security association index number.
Status Displays whether the security association is active or not
Tunnel Name This is the name of the new tunnel.
IPSec Algorithm This field displays the encryption algorithm, and authentication algorithm used in
each VPN tunnel.
Disconnect Select one of the security associations, and then click Disconnect to stop that
security association.
Refresh Click Refresh to display the current active VPN connection(s).