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Cisco ASA 5500 Series Configuration Guide using ASDM
OL-20339-01
Chapter 64 General VPN Setup
DTLS Settings
DTLS Settings
Enabling Datagram Transport Layer Security (DTLS) allows the AnyConnect VPN client establishing
an SSL VPN connection to use two simultaneous tunnels—an SSL tunnel and a DTLS tunnel. Using
DTLS avoids latency and bandwidth problems associated with some SSL connections and improves the
performance of real-time applications that are sensitive to packet delays.
If you do not enable DTLS, AnyConnect client users establishing SSL VPN connections connect with
an SSL VPN tunnel only.
Fields
• Interface—Displays a list of interfaces on the adaptive security appliance.
• DTLS Enabled—Click to enable DTLS connections with the AnyConnect client on the interfaces.
• UDP Port (default 443)—(Optional) Specify a separate UDP port for DTLS connections.
Modes
The following table shows the modes in which this feature is available:
SSL VPN Client Settings
The Cisco AnyConnect VPN client provides secure SSL connections to the adaptive security appliance
for remote users. The client gives remote users the benefits of an SSL VPN client without the need for
network administrators to install and configure clients on remote computers.
Without a previously-installed client, remote users enter the IP address in their browser of an interface
configured to accept SSL VPN connections. Unless the adaptive security appliance is configured to
redirect http:// requests to https://, users must enter the URL in the form https://<address>.
If you need to redirect http:// requests to https://, go to Configuration > Remote Access VPN >
Advanced, then click HTTP Redirect. Choose the interface you want to redirect, then click Edit to
display the Edit HTTP/HTTPS Settings dialog box. Check the Redirect HTTP to HTTPS check box,
and change the HTTP Port value, if necessary. Click OK to close this dialog box, then click Apply to
save your settings.
Firewall Mode Security Context
Routed Transparent Single
Multiple
Context System
• — • ——
Firewall Mode Security Context
Routed Transparent Single
Multiple
Context System
• — • ——
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