2.9 KiB
Connecting a VoIP phone directly to an Asterisk server
On my Asterisk server, I happen to have two on-board ethernet boards. Since I only used one of these, I decided to move my VoIP phone from the local network switch to being connected directly to the Asterisk server.
The main advantage is that this phone, running proprietary software of unknown quality, is no longer available on my general home network. Most importantly though, it no longer has access to the Internet, without my having to firewall it manually.
Here's how I configured everything.
Private network configuration
On the server, I started by giving the second network interface a static IP address in /etc/network/interfaces:
auto eth1
iface eth1 inet static
address 192.168.2.2
netmask 255.255.255.0
On the VoIP phone itself, I set the static IP address to 192.168.2.3 and the DNS server to 192.168.2.2. I then updated the SIP registrar IP address to 192.168.2.2.
The DNS server actually refers to an unbound daemon running on the Asterisk server. The only configuration change I had to make was to listen on the second interface and allow the VoIP phone in:
server:
interface: 127.0.0.1
interface: 192.168.2.2
access-control: 0.0.0.0/0 refuse
access-control: 127.0.0.1/32 allow
access-control: 192.168.2.3/32 allow
Finally, I opened the right ports on the server's firewall in /etc/network/iptables.up.rules:
-A INPUT -s 192.168.2.3/32 -p udp --dport 5060 -j ACCEPT
-A INPUT -s 192.168.2.3/32 -p udp --dport 10000:20000 -j ACCEPT
Accessing the admin page
Now that the VoIP phone is no longer available on the local network, it's not possible to access its admin page. That's a good thing from a security point of view, but it's somewhat inconvenient.
Therefore I put the following in my ~/.ssh/config to make the admin page available on http://localhost:8081 after I connect to the Asterisk server via ssh:
Host asterisk
LocalForward 8081 192.168.2.3:80
via: https://feeding.cloud.geek.nz/posts/connecting-voip-phone-directly-to-asterisk-server/
作者：François Marier 选题：lujun9972 译者：译者ID 校对：校对者ID