Reject SIP requests except from registration server

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MB..:
X_AccessList lets you restrict the IP addresses that can contact you. It would be nice if the registration IP address could be specified here - i.e. disable all IP calls from unknown entities but not have to specify the registration server's IP (which might change).

SPA2102 has this feature and it's useful for preventing VoIP hacking attempts.

(If there is this feature, I can't find it!)

lacibaci:
+1 for this one.

Encino_Stan:
Quote

If there is an option on the ATA device to restrict incoming calls to only the IP address you are registered with, switch it on. (This will help to prevent calls from other than voip.ms being accepted)

I am looking for this feature.

adamb2k12:
We must have this feature! My phone rings at ungodly hours of the night and they just hang up... there is never anyone there... the calls did not come through my SIP provider ...   :-[

QBZappy:
I think most VoIP SP's have few possible servers to register to. The following setting may provide what you need in order to limit calls coming over any other foreign unwelcome service. It seems services like Callcentric might be a problem because they seem to have too many server addresses to list making it impractical or impossible to setup in the OBi. If the phantom calls are coming over the OBiTALK service, then we may have another problem.

ITSP Profile X->SIP->X_AccessList

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