I'm in pain.
We are moving to a SIP based VOIP system and for whatever reason, we could not get our hosted Asterisk solution to work with our Sonicwall. Our VOIP provider gave up and is recommending an open source vendor, pfSense.
A little background:
- We have about 30 users in our network.
- We use a few IPSec VPN connections for remote networks.
- I would like, but don't need, application layer filtering.
- We're active internet users, so properly traffic shaping is probably a concern.
How can I tell if an open source firewall will handle VOIP setup smoothly with a hosted Asterisk system?
Current attempted setup with Sonicwall
- We are using a TZ 190 running SonicOS Enhanced 4.2
- Consistent NAT is enabled
- We are not using SonicWall's automatic SIP Transformations. image link: http://cl.ly/1Q3A3K3C1M1Z322I1M2L
- Firewall has been opened up to allow everything from our VOIP provider, and all SIP UDP & TCP: image link: http://cl.ly/310b07271R0c2s2c3L1g (@Tom O'Conner makes a good point that this may be a problem.)
- More details coming later...