One of my clients has been looking into Switchvox, for use with SIP. Because some phones would be connecting across the WAN, I would like to put the Switchvox on a public static address. From what I am being told, there is no way for me to access the firewall functions of the underlying Linux distro.
Is there a way for me to close and open ports on the nic of the Switchvox? I would like to only open the standard 5060 ; 10000-2000 ; and possibly a couple non standard ports, but keep everything else closed.
I find it hard to believe that there is no way to do this, which forces you to put the device behind a NAT, which SIP does not work well with. Seems very illogical.