/mcpTable 44: VPN Feature Parameters Default Field When True, the VPN client can only run when it detects that it is out of the corporate network. Default: False Enable Auto Network Detect This field specifies the maximum transmission unit: Default: 1290 bytes Minimum: 256 bytes Maximum: 1406 bytes MTU This field specifies the rate at which the system sends the keep alive message. Note If it is non zero and less than the value specified in Unified Communications Manager, the keep alive setting in the VPN concentrator overwrites this setting. Default: 60 seconds Minimum: 0 Maximum: 120 seconds Keep Alive This field specifies the amount of time to wait for login or connect operations to complete while the system creates the VPN tunnel. Default: 30 seconds Minimum: 0 Maximum: 600 seconds Fail to Connect From the drop-down list, choose the client authentication method: • User and password • Password only • Certificate (LSC or MIC) Default: User And Password Client Authentication Method When True, a user password gets saved in the phone, if Reset button or “#” is used for reset. The password does not get saved and the phone prompts for credentials if the phone loses power or you initiate a factory reset. Default: False Enable Password Persistence When True, the gateway certificate subjectAltName or CN must match the URL to which the VPN client is connected. Default: True Enable Host ID Check Security Guide for Cisco Unified Communications Manager, Release 15 and SUs 292 Advanced System Security VPN Feature Parameters