Problems using My Ooma? Ideas on how we can make it better? You’ve come to the right place.
#44456 by JRHelgeson
Fri Jan 29, 2010 1:59 pm
I've had my Ooma Hub for about a year now. Two problems I've had is that first, the ooma hub does not even support the features of a generic piece of crap Linksys or DLink internet router/firewall, namely the ability to DISABLE DHCP, and support for Dynamic DNS.
I have a HP Home Server, which is really just a Microsoft 2003 Server slimmed down. It provides my DHCP & DNS. I have a network printer and lots of other devices on my network to provide for remote printing, ftp, and tons of other services when I'm out of the house. If the home server detects that there is another DHCP server running on the network, it will shut itself down to prevent any conflicts.

Because I could not shut down the DHCP, I would be forced to place my home network BEHIND an ADDITIONAL firewall to filter out the DHCP requests. That won't work due to firewall configuration issues, and the second requirement I have which is DDNS.

The 2nd option would be to place the OOMA box BEHIND a firewall, and open the ports to that device that it needs for phone traffic. Which is what I did. Problem with that option is that the OOMA box is no longer able to manage voice quality of service. I had to set up port based QoS on the router, but even still - we would have serious problems when calls would come in, we could not talk to people for the first 10-15 seconds after answering the call... they could hear us, we couldn't hear them... WE endured wondering when ooma would get around to working on their firewall features.

When I saw that the Telo came out, I looked at the features list which stated that it supported "Advanced network/firewall configuration"

FINALLY, I thought... I can get the Ooma to be my gateway device... I didn't waste a second ordering it and 4 of the handsets...

Huzzah!!! It came today!!!

I called the support number to get the transfer started. I connected it to the network, browsed to the interface page and... saw the same exact interface of as the Ooma Hub.

When I told the operator that I needed to disable DHCP, she started laughing at me. I had to explain the difference to her betweenthe DHCP on the internet side (ooma box , and the DHCP on the home network side.

I am pissed off.

Required Features for Ooma:
1) Dynamic DNS Registration
2) Disable DHCP on the Ooma Box
#44462 by sfhub
Fri Jan 29, 2010 2:12 pm
It would be nice to have those features.

If you already have the hardware setup to put Ooma behind your firewall, why couldn't you just put Ooma in front of your firewall?

I'm assuming your firewall (or other device) already provides DDNS support and by their nature the firewall would filter out DHCP on its Internet port so your HP Home Server wouldn't see Ooma's DHCP.

There are valid reasons but you didn't seem to list any of them and your current setup with Ooma behind your firewall uses the same amount of hardware as Ooma in front of the firewall, except the latter config solves your DHCP and DDNS complaints as well as allows Ooma to perform QoS.

You just make your firewall the DMZ in Ooma and for most people it just works.
#44463 by murphy
Fri Jan 29, 2010 2:18 pm
Put the ooma box behind your router and both of those problems go away.
The two that you left out are that these days it needs a gigabyte interface and you need to be able to disable external pings.
I have a hub and a Telo behind my gigabit router and they work fine.
Nothing is connected to the Home port of either device.
I did not have to open any ports in the router for them to work.
It was trivial to configure the router to give them priority when they need it.
#44466 by dtalwar
Fri Jan 29, 2010 2:30 pm
Ditto as murphy. I have WHS as well. I have Ooma Telo and Ooma Hub both behind the router. The configuration was easy. No ports needed to be forwarded for Ooma. Everything is humming along just fine!
#44470 by caseybea
Fri Jan 29, 2010 3:14 pm
What linksys router do you have?

In my case, I have a linksys WRT54G. I wiped out the crappy linksys firmware, and replaced it with TOMATO. I set up QoS, and it's alllllll good. Fantastic call quality, and I have full control of my network. If you have a wrt54G, let us know and I can offer tips, even my config.
#44489 by JRHelgeson
Fri Jan 29, 2010 5:03 pm
If you already have the hardware setup to put Ooma behind your firewall, why couldn't you just put Ooma in front of your firewall?

Because then we have the OOMA device providing NAT to my internal router, which is also providing NAT, and if I have any devices wanting to do UPnP, forget it... it'll open up the ports on the firewall, but not the Ooma, which doesn't even support UPnP anyhow... but nevertheless, I'd need to open ports on the Ooma, then the external firewall, and that would break the DDNS on the internal firewall.

All i want is for Ooma to give their devices a DECENT, nee MINIMAL basic feature set to 1) make it STFU when I want it to (turn off dhcp) and Speak up when I need it to (DDNS) and heck, just match a basic firewall feature set that you can get on any basic network device these days and I'd be ecstatic!

And another thing, WHY is it taking 48 hours to port my old Ooma Hub info over to the New Ooma Telo? I'm trying to register my handsets to the Telo and I cannot obtain my PIN number apparently until its fully provisioned.
#44514 by sfhub
Fri Jan 29, 2010 6:49 pm
JRHelgeson wrote:Because then we have the OOMA device providing NAT to my internal router, which is also providing NAT, and if I have any devices wanting to do UPnP, forget it... it'll open up the ports on the firewall, but not the Ooma, which doesn't even support UPnP anyhow... but nevertheless, I'd need to open ports on the Ooma, then the external firewall, and that would break the DDNS on the internal firewall.

By adding your firewall as the DMZ in Ooma config, you don't need to add port forwarding twice (once in your firewall and once in Ooma). All incoming ports (except the ones Ooma intercepts for itself) are then passed through to your firewall without further configuration.

UPnP works as it does now, opening up the ports in your firewall. No need to open up ports in Ooma, because the DMZ has basically already opened up all ports and sent them to your firewall.

DDNS is not broken in that configuration either. The DDNS update request is done by your firewall and traverses a NAT by Ooma, but the eventual request hitting the DDNS server will have source IP of your Ooma, which is the real public IP that needs to be in the DDNS database. When lookup is done on your DDNS name, the public IP is returned, the request is made, and since your firewall is listed as the DMZ in Ooma, any requests that come in (other than Ooma's) are automatically forwarded to your firewall, where the firewall's config takes over and decides what to do.
#44620 by JRHelgeson
Sat Jan 30, 2010 12:16 pm
I figured out how to effectively disable DHCP. I have the Ooma Telo SW Rev: 1.33190 - I have no idea if it works in prior SW editions.

Under Advanced Settings: Change the DHCP start address and end address to the same value ending in zero for the last octet. e.g.
Home Port
IP Address: 192.168.0.1
Netmask: 255.255.255.0
DHCP Configuration
Start Address: 192.168.0.0
End Address: 192.168.0.0

That gives an IP address range of 0 valid IP's, which will make the device stop responding to DHCP requests.
#123609 by baj
Sat Oct 11, 2014 12:49 am
That's cool, I wish it worked on mine. I have Version: 90411. I set the DHCP server range to *.*.*.0 to *.*.*.0 and it actually assigns *.*.*.0 to the first device I tried to connect. Had to disconnect the cable from the LAN port. I did get the web interface working through the internet port though, so I guess there isn't much reason to have it connected.
#123610 by MapleOne
Sat Oct 11, 2014 4:28 am
I certainly empathize with anyone having issues but for me I plug the telo into an open port on my router and it just works. Any problems I have ever had have been with the HD2 handsets and those have been resolved for quite a while now.

I use the standard modem/router combo from my ISP and I cannot remember having any issues that a quick reboot of a handset did not solve.

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