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CHAPTER
35-1
Cisco ASDM User Guide
OL-16647-01
35
General
A virtual private network is a network of virtual circuits that carry private traffic over a public network
such as the Internet. VPNs can connect two or more LANS, or remote users to a LAN. VPNs provide
privacy and security by requiring all users to authenticate and by encrypting all data traffic.
Client Software
The Client Software pane lets administrators at a central location do the following actions:
• Enable client update; specify the types and revision numbers of clients to which the update applies.
• Provide a URL or IP address from which to get the update.
• In the case of Windows clients, optionally notify users that they should update their VPN client
version.
Note The Client Update function at Configuration > Remote Access VPN > Network (Client) Access >
Advanced > IPSec > Upload Software > Client Software applies only to the IPSec VPN client, (For
Windows, MAC OS X, and Linux), and the VPN 3002 hardware client. It does not apply to the Cisco
AnyConnect VPN clients, which is updated by the security appliance automatically when it connects.
For the IPSec VPN client, you can provide a mechanism for users to accomplish that update. For VPN
3002 hardware client users, the update occurs automatically, with no notification. You can apply client
updates only to the IPSec remote-access tunnel-group type.
Note If you try to do a client update to an IPSec Site-to-Site IPSec connection or a Clientless VPN IPSec
connection, you do not receive an error message, but no update notification or client update goes to those
types of IPSec connections.
To enable client update globally for all clients of a particular client type, use this window. You can also
notify all Windows, MAC OS X, and Linux clients that an upgrade is needed and initiate an upgrade on
all VPN 3002 hardware clients from this window. To configure the client revisions to which the update
applies and the URL or IP address from which to download the update, click Edit.
To configure client update revisions and software update sources for a specific tunnel group, see
Configuration > Remote Access VPN > Network (Client) Access > IPSec > Add/Edit > Advanced >
IPSec > Client Software Update.