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IP PBXs USER MANUAL
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 Remote IP : PPTP VPN remote network IP range, there must be 10 or less available IP addresses between start IP and end IP.
 Local IP
: PPTP VPN local server IP address.
 Primary DNS : Primary DNS for VPN connection.
 Alternative DNS : Secondary DNS for VPN connection.
 Timeout(S) : Session timeout for PPTP tunnels.
 Authentication Method : Choose method/methods for the authentication of the VPN clients.
 chap
: Challenge Handshake Authentication Protocol, CHAP takes a more sophisticated and secure approach to
authentication by creating a unique challenge phrase (a randomly generated string) for each authentication.
 pap : Password Authenticate Protocol PAP works like a standard login procedure; it uses static user name and password to
authenticate the remote system.
 mschap : MS-CHAP is the Microsoft version of the Challenge-Handshake Authentication Protocol.
 mschap-
: Microsoft Challenge Handshake Authentication Protocol version 2 (MS-CHAP ), this provides stronger security for
remote access connections.
 Enable MPPE128 Encryption : Microsoft Point-to-Point Encryption (MPPE) encrypts data in Point-to-Point Protocol (PPP)-based
dial-up connections or Point-to-Point Tunneling Protocol (PPTP) virtual private network (VPN) connections with 128-bit key.
 Debug : Enable debug for PPTP VPN connection, debug information will be written into system logs.
Once server configurations done, you may create PPTP client users, each user created is for a VPN client to connect. PPTP VPN server on
IPPBX can connect up to 20 PPTP VPN clients.