Chapter 22 IPSec VPN
SBG3500-N Series User’s Guide
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22.7 Technical Reference
This section provides some technical background information about the topics covered in this
chapter.
22.7.1 IPSec Architecture
The overall IPSec architecture is shown as follows.
Figure 148 IPSec Architecture
Key Enter a password (up to 15 alphanumeric characters) as the key to be shared between
the external authentication server and the SBG3500-N Series.
The key is not sent over the network. This key must be the same on the external
authentication server and the SBG3500-N Series.
Timeout Specify the timeout period (between 1 and 300 seconds) before the SBG3500-N Series
disconnects from the RADIUS server. In this case, user authentication fails.
Search timeout occurs when either the user information is not in the RADIUS server or
the RADIUS server is down.
Retries Specify the number of connection retries before the SBG3500-N Series disconnects
from the RADIUS server.
Apply Click Apply to save your changes back to the SBG3500-N Series.
Cancel Click Cancel to restore your previous settings.
Table 106 VPN > IPSec VPN > Radius (continued)
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