The outside interface has a static public IP address of 1.1.1.20 which faces the internet. For more information, please consult your Cisco product documentation. This example assumes you have knowledge of the Cisco ASA gateway command line configuration interface. Parameters automatically from the gateway. The client uses the pull configuration method to acquire the following The configuration example described below will allow an IPsec VPN client to communicate with a single remote private network. The Shrew Soft VPN Client has been tested with Cisco products to ensure interoperability. Version 6.x, please consult the HowtoCiscoPix. If you have a PIX device running firmware This guide provides information that can be used to configure a Cisco PIX/ASA device running firmware version 7.x to support IPsec VPN client connectivity. If both the RSA and Extended Authentication attempts succeed, the peer is considered authentic.ASA IPSec with Shrewsoft. The security association is then used to protect the Extended Authentication which is submitted to an external account database for verification. In this example, an ISAKMP security association is established using RSA authentication.
The Gateway will have access to a user account database to validate the credentials. Immediately after, the Client is typically required to provide a username and password. To perform Hybrid Authentication, an ISAKMP security association will need to be established using a modified form of RSA Authentication that only validates the Gateway. If both the Preshared Key and Extended Authentication attempts succeed, the peer is considered authentic.Ĭonfiguring IPsec Tools : User Authentication In this example, an ISAKMP security association is established using Preshared Key authentication.The security association is then used to protect the Extended Authentication which is submitted to an external account database for verification. To perform Extended Authentication, an ISAKMP security association will need to be established using a normal Preshared Key or RSA Authentication. If both signatures are valid, the peer is considered authentic.Ĭonfiguring IPsec Tools : RSA Authentication The received Hash Value is then verified to have been signed by the Digital Certificate Private Key. The received Digital Certificate is first verified to have been signed by the Certificate Authority Private Key. During IKE authentication, the Peer being validated sends a copy of the Digital Certificate and a Hash Value signed using the Private Key. The Peer performing the authentication only needs a copy of the trusted Certificate Authorities Digital Certificate. To perform RSA Authentication, the Peer being validated must hold a Digital Certificate signed by a trusted Certificate Authority and the Private Key for the Digital Certificate.
VPN Client Configuration : Authentication Method If the values match, the peer is considered authentic.Ĭonfiguring IPsec Tools : Preshared Key Authentication
The received Hash Value is then checked against a locally generated Hash Value using the same shared key and ancillary data. During IKE authentication, the Peer being validated sends a Hash Value generated using the shared key and ancillary data. To perform Preshared Key Authentication, both Peers must have access to a common shared key value. This allows for centralized account management and group membership checks to be used to limit access to private network resources. The use of an external LDAP account database such as Microsoft Active Directory, Novell eDirectory or OpenLDAP is recommended to support Extended or Hybrid authentication. The Shrew Soft VPN Client supports the use of standard Preshared Key and RSA Certificate Authentication as well as the Extended and Hybrid Authentication protocol extensions. To process Peer authentication, an Identity needs to be verified and credentials need to be validated using a predefined method. The IKE Protocol defines several methods that can be used to authenticate a VPN Client with a VPN Gateway.