H3C Technologies H3C MSR 50 - Manual (Page 420)

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5. The SSL VPN gateway resolves the request, interacts with the corresponding server, and then
forwards the server's reply to the user.
Advantages of SSL VPN
Support for various application protocols
Any application can be secured by SSL VPN without knowing the details. SSL VPN classifies the service
resources provided by applications into three categories:
• Web proxy server resources—Web-based access enables users to establish HTTPS connections to
the SSL VPN gateway through a browser and thereby access the Web proxy server resources of the
servers.
• TCP application resources—TCP-based access allows users to use their applications to access the
open service ports of the server securely. Such resources include remote access services, desktop
sharing services, email services, and common application service resources.
• IP network resources—IP-based access allows user hosts to communicate with servers at Layer 3
securely, supporting all IP-based applications to communicate with the servers.
Simple deployment
SSL has been integrated into most browsers, such as IE. Almost every PC installed with a browser
supports SSL. To access Web-based resources, users only need to launch a browser that supports SSL.
When a user tries to access TCP-based or IP-based resources, the SSL VPN client software runs
automatically, without requiring any manual intervention.
Support for multiple authentication methods
In addition to the certificate authentication method provided by SSL, SSL VPN also supports the following
authentication methods and any combination of two of the following methods:
• Local authentication
• RADIUS authentication
• LDAP authentication
• AD authentication
Granular access control of network resources
On the SSL VPN gateway, you can configure multiple resources and users, add resources to resource
groups, add users to user groups, and assign resource groups to user groups. After a user logs in, the SSL
VPN gateway finds the user groups to which the user belongs, and checks the resource groups assigned
to the user groups to determine which resources to provide for the user.