[SIPForum-discussion] should UA accept SIP INVITE destined to a different domain than was initially registered to

[Keith Lin]

Hi all,

I have observed such behaviour in several occasions too.  So practically
this behaviour seems to be acceptable (maybe for reasons of better
compatibility?)  Having said that
, someone had also challenged me the security issue of doing so. So I am
confused what SHOULD be the correct way (backed up by RFC3261 is better =)
)

regards,
Keith

2011/10/6 Rohan Almeida <almeida.rohan at gmail.com>

>
> Hi,
>
> I have observerd such behavior of an UA, altough UA is registered with a
> particular name, any INVITE coming to the port it is lintening to is
> processed.
>
>
>
> regards,
> Rohan Almeida
> On Thu, Oct 6, 2011 at 2:49 AM, tester voip <tester.voip1 at gmail.com>wrote:
>
>> May reply with 400 Bad Request.
>>
>>
>> On Thu, Oct 6, 2011 at 2:48 AM, tester voip <tester.voip1 at gmail.com>wrote:
>>
>>> I dont think it'll accept the INVITE.
>>>
>>>   On Tue, Oct 4, 2011 at 1:55 PM, Keith Lin <iamchiaweilin at gmail.com>wrote:
>>>
>>>>  Hi everyone,
>>>>
>>>>
>>>> My question is "Should an UA accept SIP INVITE, whose "to header" field
>>>> contains a different domain than
>>>> the one that this UA initially registered with?"
>>>>
>>>> Let me use an example to illustrate my question again:
>>>>
>>>> (1) an UA registered with a proxy say a.com
>>>>      let's say this UA has an URI of 111 at a.com
>>>>
>>>> (2) if this UA receives an INVITE with to header field 111 at b.com
>>>> Should it accept this invite?
>>>>
>>>> because I initially registered with a.com, an incoming request is
>>>> destined to b.com
>>>> wouldn't there be a security problem if this request is accepted?
>>>>
>>>> Thank you guys~
>>>>
>>>>
>>>>
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>>>>
>>>
>>
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