[Asterisk-Users] VOIP security on an IAX connection.

[Gregory Junker]

> Use iptables to secure your * box and allow traffic only from known 
> servers/hosts. I would say that step one. When you do that then you can 
> use a VPN to make sniffing more difficult.
> What link do you have between the offices? Is it public internet ?

I gathered that he was mostly concerned with man-in-the-middle attacks. 
It doesn't really matter whether it's a leased line or public Internet 
at that point; it's not that difficult to break into a CO and tap a 
line, and if his security needs are high enough, that has to be 
considered as well.

Greg