1-4
Cisco ASA Series CLI Configuration Guide
Chapter 1 Configuring Connection Profiles, Group Policies, and Users
Connection Profiles
IPsec Tunnel-Group Connection Parameters
IPsec parameters include the following:
•
A client authentication method: preshared keys, certificates, or both.
–
For IKE connections based on preshared keys, this is the alphanumeric key itself (up to 128
characters long), associated with the connection policy.
–
Peer-ID validation requirement—This parameter specifies whether to require validating the
identity of the peer using the peer’s certificate.
–
If you specify certificates or both for the authentication method, the end user must provide a
valid certificate in order to authenticate.
•
An extended hybrid authentication method: XAUTH and hybrid XAUTH.
You use
isakmp ikev1-user-authentication
command to implement hybrid XAUTH authentication
when you need to use digital certificates for ASA authentication and a different, legacy method for
remote VPN user authentication, such as RADIUS, or SecurID.
•
ISAKMP (IKE) keepalive settings. This feature lets the ASA monitor the continued presence of a
remote peer and report its own presence to that peer. If the peer becomes unresponsive, the ASA
removes the connection. Enabling IKE keepalives prevents hung connections when the IKE peer
loses connectivity.
There are various forms of IKE keepalives. For this feature to work, both the ASA and its remote
peer must support a common form. This feature works with the following peers:
–
Cisco AnyConnect VPN Client
–
Cisco VPN Client (Release 3.0 and above)
–
Cisco VPN 3000 Client (Release 2.x)
–
Cisco VPN 3002 Hardware Client
–
Cisco VPN 3000 Series Concentrators
–
Cisco IOS
software
–
Cisco Secure PIX Firewall
Non-Cisco VPN clients do not support IKE keepalives.
If you are configuring a group of mixed peers, and some of those peers support IKE keepalives and
others do not, enable IKE keepalives for the entire group. The feature does not affect the peers that
do not support it.
If you disable IKE keepalives, connections with unresponsive peers remain active until they time
out, so we recommend that you keep your idle timeout short.
To change your idle timeout, see
“Configuring Group Policies” section on page 70-42
.
Note
To reduce connectivity costs, disable IKE keepalives if this group includes any clients
connecting via ISDN lines. ISDN connections normally disconnect if idle, but the IKE keepalive
mechanism prevents connections from idling and therefore from disconnecting.
If you do disable IKE keepalives, the client disconnects only when either its IKE or IPsec keys
expire. Failed traffic does not disconnect the tunnel with the Peer Timeout Profile values as it
does when IKE keepalives are enabled.
Summary of Contents for 5505 - ASA Firewall Edition Bundle
Page 28: ...Glossary GL 24 Cisco ASA Series CLI Configuration Guide ...
Page 61: ...P A R T 1 Getting Started with the ASA ...
Page 62: ......
Page 219: ...P A R T 2 Configuring High Availability and Scalability ...
Page 220: ......
Page 403: ...P A R T 2 Configuring Interfaces ...
Page 404: ......
Page 499: ...P A R T 2 Configuring Basic Settings ...
Page 500: ......
Page 533: ...P A R T 2 Configuring Objects and Access Lists ...
Page 534: ......
Page 601: ...P A R T 2 Configuring IP Routing ...
Page 602: ......
Page 745: ...P A R T 2 Configuring Network Address Translation ...
Page 746: ......
Page 845: ...P A R T 2 Configuring AAA Servers and the Local Database ...
Page 846: ......
Page 981: ...P A R T 2 Configuring Access Control ...
Page 982: ......
Page 1061: ...P A R T 2 Configuring Service Policies Using the Modular Policy Framework ...
Page 1062: ......
Page 1093: ...P A R T 2 Configuring Application Inspection ...
Page 1094: ......
Page 1191: ...P A R T 2 Configuring Unified Communications ...
Page 1192: ......
Page 1333: ...P A R T 2 Configuring Connection Settings and QoS ...
Page 1334: ......
Page 1379: ...P A R T 2 Configuring Advanced Network Protection ...
Page 1380: ......
Page 1475: ...P A R T 2 Configuring Modules ...
Page 1476: ......
Page 1549: ...P A R T 2 Configuring VPN ...
Page 1550: ......
Page 1965: ...P A R T 2 Configuring Logging SNMP and Smart Call Home ...
Page 1966: ......
Page 2059: ...P A R T 2 System Administration ...
Page 2060: ......
Page 2098: ...1 8 Cisco ASA Series CLI Configuration Guide Chapter 1 Troubleshooting Viewing the Coredump ...
Page 2099: ...P A R T 2 Reference ...
Page 2100: ......