Internet Telephony PBX System
IPX-330/IPX-2100
96
Item Explanation
z mschap-v2: Microsoft Challenge Handshake Authentication
Protocol version 2 (MS-CHAP v2), it provides stronger security for
remote access connections.
Enable mppe128 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 Tick to enable debug for PPTP VPN connection, debug info will be
written into system logs.
For the VPN client to connect you’ll need to create a VPN user account.
Click “VPN User Management” tab and click “New VPN User” button to add a VPN user
account.
If the IPPBX system is behind NAT, you need to open ports 1723 on the
router/firewall.
4.3.3 OpenVPN
OpenVPN is an open-source software application that implements virtual private network (VPN)
techniques for creating secure point-to-point or site-to-site connections in routed or bridged
configurations and remote access facilities. It uses a custom security protocol[3] that utilizes
SSL/TLS for key exchange. It is capable of traversing network address translators (NATs) and
firewalls. It was written by James Yonan and is published under the GNU General Public
License (GPL).
OpenVPN allows peers to authenticate each other using a pre-shared secret key, certificates,
or username/password. When used in a multiclient-server configuration, it allows the server to
release an authentication certificate for every client, using signature and Certificate authority. It
uses the OpenSSL encryption library extensively, as well as the SSLv3/TLSv1 protocol, and
contains many security and control features.
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