Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.



93 posts

Master Geek
+1 received by user: 1


Topic # 105003 25-Jun-2012 10:18 Send private message

With the question of security etc in mind - are Private SIP trunks possible, or even feasible?
What I mean by that, is say you have a direct data circuit to a SIP provider, with no internet access on the circuit, like a closed VPN. Then connect to the SIP proxy internal address across the data circuit, to provide outside connectivity to your ip-pbx?

Or is this a fundemental voilation of SIP's protocol, being peer to peer?
This eliminates the possibility to use stun, and I am not sure that having the ippbx not accessible at all from the internet would cause problems or not.
It would certainly help with hacking though, given that the 5060 ports are not accessible...
Any suggestions/recommendations?

Cheers,
Z

Create new topic
19797 posts

Uber Geek
+1 received by user: 1520

Moderator
Trusted
Biddle Corp
Subscriber

  Reply # 645730 25-Jun-2012 10:22 Send private message

SIP isn't a peer to peer protocol.

Many providers will only deliver VoIP connections over dedicated data connections (HSNS for example) and it's certainly very common in the industry.


814 posts

Ultimate Geek
+1 received by user: 33

Trusted
Subscriber

  Reply # 645763 25-Jun-2012 10:55 Send private message

Yep - Gen-I and TelstraClear offer private network SIP products now, and I'm sure the public operators offer private connections too.

A




________
AK



93 posts

Master Geek
+1 received by user: 1


  Reply # 645799 25-Jun-2012 11:54 Send private message

Many thanks guys - appreciate the feedback.
Sounds like this is the way to go then.

cheers,

3015 posts

Uber Geek
+1 received by user: 197

Trusted
Subscriber

  Reply # 645833 25-Jun-2012 12:44 Send private message

While security etc. is really important I do agree, unless QoS is an issue over the public internet I see no reason for a private connection. At the end of the day the security risk is at the carrier's gateway, not your system. This is because you can fully firewall your system so that the only ingress and egress traffic go to the carrier's gateway IP.

The problem with private circuits is that you will lose the redundancy you get with the internet e.g. if my fibre connection gets cut, I can drop in a 3g connection basically straight away.





19797 posts

Uber Geek
+1 received by user: 1520

Moderator
Trusted
Biddle Corp
Subscriber

  Reply # 645845 25-Jun-2012 13:02 Send private message

zimbonz: Many thanks guys - appreciate the feedback.
Sounds like this is the way to go then.

cheers,


Whether or not it's the "way to go" dosn't have a simple answer. There are pros and cons, and at the end of the day depends entirely on how you want to configure things. Security risks of exposing a PBX to the internet can be essentially eliminated by configuring things correctly.


Infrastructure Geek
3705 posts

Uber Geek
+1 received by user: 88

Trusted
Microsoft NZ
Subscriber

  Reply # 646123 25-Jun-2012 22:35 Send private message

i have a private SIP trunk with callplus. its delivered on a seperate VLAN over the fibre and has a private ip range. it certainly makes firewalling easier, but it also segregates your VoIP traffic from your internet traffic and means you dont have to stuff around with QoS.




Technical Evangelist
Microsoft NZ
about.me/nzregs
Twitter: @nzregs


Create new topic




Twitter »
Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





Trending now »

Hot discussions in our forums right now:

Speed limit when overtaking? Teach me please.
Created by nakedmolerat, last reply by KiwiNZ on 25-Oct-2014 05:54 (74 replies)
Pages... 3 4 5


House Auctions
Created by t0ny, last reply by mattwnz on 25-Oct-2014 00:18 (36 replies)
Pages... 2 3


Spark Socialiser
Created by freitasm, last reply by freitasm on 22-Oct-2014 18:39 (34 replies)
Pages... 2 3


VDSL, which router/modem sub $200?
Created by TeaLeaf, last reply by TeaLeaf on 24-Oct-2014 23:26 (16 replies)
Pages... 2


30 too old to get into IT?
Created by Interslice, last reply by shk292 on 24-Oct-2014 20:39 (16 replies)
Pages... 2


American legal jurisdiction in New Zealand
Created by ajobbins, last reply by gzt on 21-Oct-2014 14:58 (30 replies)
Pages... 2


iPad Air 2 and iPad Mini 3. Gonna get one?
Created by Dingbatt, last reply by tdgeek on 25-Oct-2014 01:10 (109 replies)
Pages... 6 7 8


5Ghz AP recommendations?
Created by ubergeeknz, last reply by sbiddle on 24-Oct-2014 12:42 (12 replies)


Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.

Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.