Incoming URI calls on 2talk

Forums › 2degrees (including Slingshot, Orcon, Flip, Stuff Fibre, MyRepublic, 2talk and Vocus) › Incoming URI calls on 2talk

ajobbins

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#111779 14-Nov-2012 17:02

Does anyone know if 2talk allow incoming SIP URI calls to their platform?

And if so, what is the URI format. I tried <number>@2talk.co.nz but that didn't seem to work.

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Zeon

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#717261 14-Nov-2012 17:39

Can't your PBX take an incoming SIP call?

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ajobbins

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#717268 14-Nov-2012 17:47

Zeon: Can't your PBX take an incoming SIP call?

Not running one. My IP phone at home registers direct to 2talk.

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Zeon

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#717309 14-Nov-2012 18:55

What about port forwarding SIP to your phone and running your own domain then?

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ajobbins

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#717310 14-Nov-2012 18:57

Zeon: What about port forwarding SIP to your phone and running your own domain then?

Well I already run the domain, but not sure that the phone (Siemens Gigaset) would receive an inbound URI call?

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sbiddle

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#717311 14-Nov-2012 18:58

SIP URI calling is a massive security risk these days. Everybody out there with a SIP device that has 5060 port forwarded will realise this when there phone keeps ringing randomly in the middle of the night..

ajobbins

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#717328 14-Nov-2012 19:25

sbiddle: SIP URI calling is a massive security risk these days. Everybody out there with a SIP device that has 5060 port forwarded will realise this when there phone keeps ringing randomly in the middle of the night..

What's the solution?

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sbiddle

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#717331 14-Nov-2012 19:34

ajobbins:
sbiddle: SIP URI calling is a massive security risk these days. Everybody out there with a SIP device that has 5060 port forwarded will realise this when there phone keeps ringing randomly in the middle of the night..

What's the solution?

Only allowing SIP access from your SIP proxy. Cisco/Linksys devices have an option called "restrict source IP", but this apparently doesn't work with 2talk.

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ajobbins

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#717340 14-Nov-2012 19:55

Assume you can whitelist IPs in Asterisk? Maybe time to put that Raspberry Pi to good use

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DravidDavid

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#717417 15-Nov-2012 00:23

SIP URI calling is a massive security risk these days. Everybody out there with a SIP device that has 5060 port forwarded will realise this when there phone keeps ringing randomly in the middle of the night..

Just out of curiosity... Why would that happen?

sbiddle

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#717454 15-Nov-2012 07:48

DravidDavid:

SIP URI calling is a massive security risk these days. Everybody out there with a SIP device that has 5060 port forwarded will realise this when there phone keeps ringing randomly in the middle of the night..

Just out of curiosity... Why would that happen?

Because there are bots out there continually trying brute force SIP attacks. Unless you're fully aware of the implications and have adequate security policies in place you should never expose any SIP devices directly to the internet.

The other issue with not using something such as Restrict Source IP is that these bots will use your traffic allowance. I had some dealings with an iTalk customer a few months ago who had used several GB over the course of a week, all of which was a bot running a 24/7 attack against their Linksys VoIP router.

Slingshot

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#718361 16-Nov-2012 16:10

ajobbins: Does anyone know if 2talk allow incoming SIP URI calls to their platform?

And if so, what is the URI format. I tried <number>@2talk.co.nz but that didn't seem to work.

Hi,

This is probably best suited in the VoIP section, 2Talk are a completely seperate company from Slingshot.

Cheers,
Ben

www.slingshot.co.nz

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