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You can click “ Edit ” button to edit one of the items, or you can delete the item by clicking the
“ Delete ” button.
Click the “Routing Table” tab and you’ll see a detailed list of all the system routing rules, including
default and custom ones.
5.3 VPN
VPN(Virtual Private Network) is mainly used for setting up long-distance and/or secured network
connections. When used onSyn_PBX, all phone calls made and received are encrypted so it
secures your remote offices/extensions' phone services. Built-in VPN Server onSyn_PBX series is
an easy way to set up a secured connection between other SYN_PBXs or IP phones. You don't
need to build a dedicated VPN server or buy a VPN router. This is also a workaround to avoid
firewall issues when configuring remote VoIP client such as SIP protocol which is notoriously
difficult to pass through a firewall due to its random port numbers to establish connection.
Syn_PBX IP PBX supports four varieties of VPN, they are L2TP, PPTP, OpenVPN and IPSec.
5.3.1 L2TP VPN
L2TP VPN Server
Layer 2 Tunneling Protocol (L2TP) is a tunneling protocol. It does not provide any encryption or
confidentiality by itself. Rather, it relies on an encryption protocol that it passes within the tunnel
to provide privacy. Here on theSyn_PBX system we use IPSec to do the encryption.
To configure your L2TP server, navigate to web menu
Network Settings->VPN Server . Check the
radio button of L2TP to configure L2TP VPN server.