Reject SIP requests except from registration server
flex25:
Quote from: OBiSupport on January 11, 2013, 04:38:39 pm
Please see the OBi Admin Guide (p. 94) for details on the parameter called ”X_AccessList”.
X_AccessList
A comma separated list of IP addresses such that the device only accepts SIP requests coming from one of the given addresses. If the list is empty, the device accepts SIP requests from any IP address
This is found in the ITSP SIP Settings area of the configuration.
Yeah, but.....it does not work for Callcentric and other providers that have large ranges of IP addresses. If Obi accepted an IP address range in X_AccessList, it will work with all providers. ObiSupport? Please allow this in a future update. We would love you so very much if you did. ;)
Encino_Stan:
Quote from: OBiSupport on January 11, 2013, 04:38:39 pm
Please see the OBi Admin Guide (p. 94) for details on the parameter called ”X_AccessList”.
X_AccessList
A comma separated list of IP addresses such that the device only accepts SIP requests coming from one of the given addresses. If the list is empty, the device accepts SIP requests from any IP address
This is found in the ITSP SIP Settings area of the configuration.
The original poster of this thread specifically mentioned the X_AccessList option as a non-solution.
That solution might work in some cases, but it is doesn't work if you are accessing a SIP by DNS name and not IP address and the IP address is subject to change. My VoIP provider, voip.ms, suggests "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.)" That way no matter what server that you are registered with, than it only accepts connections from that server. No need to be constantly changing the X_AccessList option.
There have been 2 changes to the IP list that I had to update in my X_AccessList since OBISupport made the suggestion to use that option.
rousseau1:
I am curious also and I can't remember anything useful from my Cisco studies and too busy to dig thru my books for an answer but I have some serious LAN concerns as well that I know needs to be addressed.
TrapDoor:
Quote from: flex25 on January 18, 2013, 06:56:54 pm
Quote from: OBiSupport on January 11, 2013, 04:38:39 pm
Please see the OBi Admin Guide (p. 94) for details on the parameter called ”X_AccessList”.
X_AccessList
A comma separated list of IP addresses such that the device only accepts SIP requests coming from one of the given addresses. If the list is empty, the device accepts SIP requests from any IP address
This is found in the ITSP SIP Settings area of the configuration.
Does anybody know how long this list can be - i.e. how many characters?
lacibaci:
Quote from: TrapDoor on March 05, 2013, 09:20:26 pm
Does anybody know how long this list can be - i.e. how many characters?
512 characters including space and commas.
Lac
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