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.



81 posts

Master Geek


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
18534 posts

Uber Geek
+1 received by user: 727

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.


784 posts

Ultimate Geek
+1 received by user: 29

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



81 posts

Master Geek


  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,

2858 posts

Uber Geek
+1 received by user: 131

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.





18534 posts

Uber Geek
+1 received by user: 727

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
3505 posts

Uber Geek
+1 received by user: 52

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.




Infrastructure Technical Evangelist
Microsoft NZ
about.me/nzregs
twitter.com/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 new jobs are posted to our jobs board:



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




News »

Trending now »
Hot discussions in our forums right now:

Forms of government for New Zealand
Created by charsleysa, last reply by sir1963 on 19-Apr-2014 14:28 (103 replies)
Pages... 5 6 7


MH370 - Call for Search & Rescue Help
Created by DS248, last reply by Sideface on 17-Apr-2014 17:28 (735 replies)
Pages... 47 48 49


galaxy s4 now on 4.4.2
Created by nzrock, last reply by timmmay on 19-Apr-2014 08:44 (52 replies)
Pages... 2 3 4


why does the tax payer have to pay for the prince and princess' 6 star holiday?
Created by joker97, last reply by Geektastic on 17-Apr-2014 15:49 (67 replies)
Pages... 3 4 5


Snap suffering Trans-Tasman congestion 18/04?
Created by Lias, last reply by NonprayingMantis on 19-Apr-2014 00:05 (26 replies)
Pages... 2


Help ! Home business connection and VDSL dead. yikes.
Created by Scotsman, last reply by Scotsman on 17-Apr-2014 21:10 (26 replies)
Pages... 2


Amazon Fire TV
Created by sonyxperiageek, last reply by freitasm on 19-Apr-2014 11:04 (205 replies)
Pages... 12 13 14


TVNZ on Demand Jailbreak Detection
Created by TranceManNZ, last reply by hio77 on 18-Apr-2014 20:25 (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.