I have an application with an LIPU behind a Sonicwall Firewall/Router. I have a public IP address on the LIPU and we had the IT manager open the below listed ports(which he has said is done.) The LIPU says "Registering IPT" for a while and then says IPU Not Found. I can ping the IP address from our office and the firewall shows icmp packets being lost. Does anyone know the settings on the Sonicwall to get this to work? Sonicwall tech support has been no help and customer is being difficult. Thank you!!

LIPU

Function
Protocol Name
Ports
Type

Connection Request
StrataNet (QSIG)
4029
TCP

Call Control Channel
StrataNet (QSIG)
6400-8191
TCP

Registering IPT
RAS (H.225)
1718, 1719
UDP

IPT
RTP/RTCP
1500-1503
UDP

IPT
RAS/MEGACO
1-65534 + 1
UDP Note 1

Call Control Channel
MEGACO+
2944
TCP

Media Channel for TDM
RTP/RTCP
16384-16511
UDP

Medial Channel for NAT
RTP
20480-20991
UDP

Medial Channel for IP QSIG
RTP/RTCP
20992-24575
UDP

Have you tried it outside the sonicwall?

Yes, it works outside the firewall and internally on a private IP address. It is definitely something in the firewall- I am just hoping someone can point me to the correct setting

Toshiba has said over and over that the LIPU will NOT work behink a firewall.

I know all the arguements about DMZ's and such, but I still put in a small switch ahead of the firewall for the LIPU.

Then why do they publish which ports to open on the firewall? I am missing something. Can you explain what that is concerning? It may be for something completely different. We also have it working behind our firewall here on a watchguard and adtran firewall. Unfortunately I have no experience on the SonicWall. Any other suggestions or am I on my own? I really do appreciate the help!!

We have IP phones working on a LIPU that is behind a Sonic Wall at our office. We got a cheat sheet to configure the Sonic Wall for the LIPU, don't remember where we got it from, I do remember it took a long time to get set up. If I can find it I will let you know. Plugging into the cable modem/switch was the easiest route to connect just as voyager mentioned.

Cool VoIP bus

Try telneting to each of LIPU's ports from the outside and see whether your IT people has done the bypass properly.

C:> telnet 9.9.9.9 9999 - port number

The reason they publish which ports to open is for an IP phone to work off site behind a firewall with an LIPU. You can't just plug an IP phone in behind a firewall and have it work.

The only way to go with this is put it outside the firewall, just behind the 1st router/modem with that device not doing ANY nat/firewall/etc, using JUST public IPs. We fought the same thing forever and that's the only way I could get it to work.

Placing the device outside a firewall is too risky and invites hackers to try and hack your system.

I hear that same argument from every IT person that works with this. There is no way anyone can "hack" the Toshiba phone system. The worse they may be able to do is look at the LIPU card itself. I have been around and around with Toshiba on this and its just not possible. The only way that card will work is ahead of the firewall on a Public IP.

I've got several working like that with no problems. The LIPU has a public address, the phones are set to DHCP. Plug the phone in behind any nat router (Linksys, DLink, Netgear...) that has internet access and it works with no additional router configuration.