[WXC/VFX] 3CX and WxC OpenDVX 3-Way-Auth

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mwalford

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Topic # 89638 6-Sep-2011 16:25

Okay, so 3CX have released a new version (v10) of their Windows-based IPPBX software and it is clearly supposed to support 3-way-auth.
This is something that a lot of VFX users have been waiting for right?
Interestingly, I can register for outgoing as in the previous versions, but not for incoming.

I'm still playing around at this stage and hope to get something for people but if there's anyone out there who has used v10 and successfully registered for both incoming and outgoing calling then their input would be a great help to the community. 3-way-auth

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Reply # 517647 6-Sep-2011 17:16

Ah this is really interesting. My understanding is 3cx is much more user friendly than existing VOIP PBXs?

maverick

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Reply # 517649 6-Sep-2011 17:18

Well that is good news, send us some info and we can see what it is happening

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mwalford

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Reply # 517652 6-Sep-2011 17:22

Zeon: Ah this is really interesting. My understanding is 3cx is much more user friendly than existing VOIP PBXs?

Yes and no in my opinion. Just handed over a Cisco UC320W to a client who moved offices after the Feb EQ here in Chch and that was so easy the customer could (and probably should) have done the install.

Where I see 3CX fitting in well is for those small businesses who are running an old Windows SBS2003 or similar and already have one or two lines (no DVX) on WorldxChange's VFX network. Mainly because they don't need another box (linux or whatever) and the web management is pretty easy. Plus of course there's a free version that will suit a lot of small businesses with very few users or concurrent calls.

Still trying to get incoming to auth at the moment.

maverick

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Reply # 517658 6-Sep-2011 17:27

Yes the UC320 is excellent I did a lot of beta testing with Cisco on this and it's fully supported on DVX, really great easy to use product and auto provisons into voice and data vlans, as you point out the customer can drive this box, Cisco did a excellent job for this product

https://supportforums.cisco.com/docs/DOC-17937

https://supportforums.cisco.com/docs/DOC-15041

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mwalford

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Reply # 517661 6-Sep-2011 17:33

maverick: Cisco did a excellent job for this product

They sure did but I did see a lot of asterisk notes when looking at syslog info. But all that's beside the point - it's a great box that works well. I really don't care whose logo is on it if it works this well. Now if only they could make it do some of the things the Pomegranate NS08 does! (google it)

PS. Have PM'd you my details if you that helps.

maverick

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Reply # 517666 6-Sep-2011 17:38

kay ... first issue, turn off your PAP2

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mwalford

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Reply # 517668 6-Sep-2011 17:41

maverick: kay ... first issue, turn off your PAP2

HAH! I didn't expect this to be an issue because I had the friendly guys in provisioning change my PAP2T's profile to be on the non-standard 8060 port about 2 or 3 months ago.

But it's a good point nonetheless and certainly worth trying anyway.

maverick

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Reply # 517671 6-Sep-2011 17:45

Working now :)

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mwalford

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Reply # 517673 6-Sep-2011 17:48

Thanks Maverick - that did it. Which is fantastic and terrible at the same time.

Fantastic: Well obvious reasons there!
Terrible: How embarrassing that I didn't kill the PAP2T to start with
Not-so-bad: Would be good to have both the 3CX and PAP2T on the same connection using different ports.

Actually that's not an issue because in most situations (as in an earlier post) is for small businesses etc, and they'll not have multiple registrations so this was more of an exercise to see if 3CX version 10 works with the 3-way-auth.

Really sorry for wasting everyone's time!

maverick

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Reply # 517678 6-Sep-2011 17:53

You should be able to but not with the same credentials, the PAP2T was getting rejected as it it was not using the same details, these would have changed when you moved to openVFX, also they can not exist together with the same details and different ports as they will overwrite each other.

Really good to see that they have finally enabled 3way auth, was a pretty big oversight really and I was not prepared to jeopardize customer security but allowing these devices on the network without it.

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mwalford

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Reply # 517687 6-Sep-2011 18:03

maverick: Really good to see that they have finally enabled 3way auth, was a pretty big oversight really and I was not prepared to jeopardize customer security but allowing these devices on the network without it.

Indeed it is! Given the number of attacks on SIP boxes these days and how easily attacks can be automated I completely agree with decisions of security over compatibility. Considering there's plenty of other options around? - now all the 3CX wishers will be happy.

Thanks also for the explanation of why things failed - Great to have that info in there in case someone else has this issue.

On the note of security, recently I had literally millions of failed Auth attempts from a Russian IP trying to get through while I was away - managed to use close to 70GB of my data in about a week.

russia

All of this traffic is SIP 5060 UDP traffic - so just like FTP, as soon as you open up a port - be prepared to be attacked on it!

maverick

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Reply # 517694 6-Sep-2011 18:16

Yep .... thats why Asterisk is such a dangerous platfom for home users I'm afraid, they are not going to know they are getting attacked or hacked untill the bill comes, really most users do not know how to secure their devices properly unfortunatly

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mwalford

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Reply # 517695 6-Sep-2011 18:22

maverick: do not know how to secure their devices properly unfortunatly

Well I'm glad you guys do!

After all, you're protecting your customers by having extra security and policies to stick by - this is a good thing.

I guess I should close off this topic now and let you all go home.

sbiddle

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Reply # 517704 6-Sep-2011 18:49

Was that hack attack against an Asterisk box? From my experience the attacks stop pretty quickly now once they stop seeing SIP responses, obviously the guys writing the bots are getting smarter (which is also good the for the end user) and then move on to another IP address. The good news with this it improves the effectiveness of fail2ban and iptables rules if you do need port 5060 wide open to the world.

mwalford

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Reply # 517722 6-Sep-2011 19:48

sbiddle: Was that hack attack against an Asterisk box?

Ummm dare I say it? No, it was an attack on a 3CX VM. Happened while I was away and I was surprised I didn't get complaints from people complaining the internet was so slow considering the volume of traffic in such a short period of time I'd expect the internet to be a bit crappy.

3CX does ban IPs after a configurable number of fails but I guess in this case (where I was using a standard SIP port) they just kept on trying. I guess they get something for trying.

Still - it's all unwanted traffic nonetheless. Some things here is that using a decent Cisco 1801 router with Netflow we can see this sort of thing.

I'm imagining a home user and a SOHO router this sort of attack would really suck balls. Again - the importance of protecting people with limited knowledge. Protecting them from themselves as well as others with less honourable intentions.

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