Sharp AQUOS Crystal - Manual (Page 378)

Settings 369
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Information may include Name, Type, Server address, PPP encryption (MPPE), and
advanced options.
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Set up all options according to the security details you have obtained from your network
administrator.
4. Touch Save.
Your VPN is added to the VPNs section of the VPN settings window.
Connect to or Disconnect from a VPN
Once you have set up a VPN connection, connecting and disconnecting from the VPN is easy.