security is high, VPN users access through the firewall authentication and authorization, access after access is to use a separate virtual firewall system to manage users, the resources of different VPN users are completely isolated

VPN access mode is flexible and reliable. It can support from public network to VPN, and can also support from VPN to VPN.

is easy to maintain, users can manage the entire firewall (including each virtual firewall) without a system administrator account with super user privileges.

The access control authority is strict. The firewall can control the access rights of the VPN according to the user name and password. This allows different users such as travel employees and super users (need to access different VPN resources) to have different access rights.