[Asterisk-Users] snom 190: dial tone without registration?

[Karl Brose]

You should use DHCP to enforce IP address to MAC binding when the phones 
boot.
And then let the phones register and use host access (deny/permit) 
permissions in peer section to restrict by IP address/mask.


alan wrote:

>Gavin Hamill <gdh at laterooms.com> wrote:
>
>  
>
>>On Monday 13 June 2005 16:42, alan wrote:
>>
>>    
>>
>>>I'm currently evaluating the Sipura SPA-841, and snom 190 phones for use
>>>in an Asterisk PBX/call center environment.
>>>      
>>>
>
><snipped>
>  enforce SIP channel IP restrictions in Asterisk without
>  "host=<ipaddr>", or get the snom 190 to stop complaining when it's not
>  registered
></snipped>
>
>  
>
>>How about tackling this with iptables and matching specific IP addresses on
>>specific MAC addresses?
>>    
>>
>
>This solves part, but not all, of the problem.
>
>This ensures that only authorized devices can connect to asterisk, and
>that their IP addresses are also correct. But it doesn't force
>each device to use only its assigned sip channel.
>
>(That is: with dynamic IP registration, a valid IP/MAC could be
>configured with another device's SIP registration information, and steal
>calls which should be going to the other device.)
>
>I suppose iptables in combination with sip secrets should be enough.
>
>But realistically, I can already do what I want the way I want to do it,
>with the SPA-841. I mostly need to decide: if this feature is lacking,
>is it enough for me to prefer the Sipura over the snom?
>
>Thanks again,
>
>Alan Ferrency
>pair Networks, Inc.
>alan at pair.com
>
>
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