Sa monitor, 16 sa monitor – ZyXEL Communications Internet Security Gateway ZyWALL 2 Series User Manual

Page 239

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ZyWALL 2 Series User’s Guide

VPN Screens

14-33

Table 14-9 VPN Manual Setup

LABEL DESCRIPTION

Authentication
Key

Type a unique authentication key to be used by IPSec if applicable. Enter 16
characters for MD5 authentication or 20 characters for SHA-1 authentication. Any
characters may be used, including spaces, but trailing spaces are truncated.

Apply

Click Apply to save your changes back to the ZyWALL.

Cancel

Click Cancel to exit this screen without saving.

14.16 SA Monitor

In the web configurator, click VPN and the SA Monitor tab. Use this screen to display and manage your
active VPN connection.

A Security Association (SA) is the group of security settings related to a specific VPN tunnel. This screen
displays the active VPN connection. Use Refresh to display the active VPN connection. 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 the section on

keep alive to have the ZyWALL renegotiate an IPSec SA when the SA lifetime

expires, even if there is no traffic.

Figure 14-11 VPN SA Monitor

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