[SIPForum-discussion] Reg: Small doubt in SIP message..

Thu Jul 28 09:25:50 UTC 2011

Proxy will reject the msg as a whole.
On Wed, Jul 27, 2011 at 10:43 AM, HM Kias <hmkias at gmail.com> wrote:

> In this case proxy will accept trusted domains or IPS & reject spoofed
> ones, authentication & checking will be the better option to handle this.
>
>
> On Tue, Jul 26, 2011 at 9:29 AM, Karthikeyan Selvaraj <
> karthikeyan.selvaraj at sasken.com> wrote:
>
>>  ** **
>>
>> ** **
>>
>> Hi, I know call originator can't send multiple TO and FROM.  ****
>>
>> ** **
>>
>> The senario is, the originator send the SIP request with single TO and
>> FROM headers. ****
>>
>> Suppose some intruders (hackers), possible to add one more TO or FROM
>> headers in the sip request. TO doesn't have any tag in the request. FROM
>> contains the tag, so intruder add his won FROM header with some tag value.
>> ****
>>
>> ** **
>>
>> In this case how the proxy will behave….****
>>
>> ** **
>>
>> ** **
>>
>> ** **
>>
>> Regards,****
>>
>> Karthikeyan S****
>>
>>  ****
>>
>> ** **
>>
>> *From:* Manoj Priyankara [mailto:manoj0915 at gmail.com]
>> *Sent:* Tuesday, July 26, 2011 6:36 AM
>> *To:* Karthikeyan Selvaraj
>>
>> *Subject:* Re: [SIPForum-discussion] Reg: Small doubt in SIP message..***
>> *
>>
>> ** **
>>
>> Hi, this is obvious. From and to headers represent the call originator and
>> the termination. There is no meaning to have multiple from and to headers.
>> Br, Manoj****
>>
>> On 26-Jul-2011 2:15 AM, "Karthikeyan Selvaraj" <
>> karthikeyan.selvaraj at sasken.com> wrote:
>> >
>> > hi,
>> > ya its correct. I know it,
>> > Suppose, intruder hack my SIP message and possible to add one more TO or
>> FROM header.
>> > in these case what will happen in server side. either accept or reject.
>> > There is no special rule for TO and FROM headers in RFC 3261.
>> >
>> >
>> > Regards,
>> > Karthikeyan S
>> >
>> >
>> > From: tester voip [mailto:tester.voip1 at gmail.com]
>> > Sent: Monday, July 25, 2011 5:03 PM
>> > To: Karthikeyan Selvaraj
>> > Cc: franz.edler at kabsi.at; discussion at sipforum.org
>> > Subject: Re: [SIPForum-discussion] Reg: Small doubt in SIP message..
>> >
>> > Please think logicaly also.Is it possible to make a single call from
>> different people to different people?
>> > FOr example from your phone at the same time how many persons can make a
>> call or to how many persons you can make a call.
>> > Even if you are having one URI and numerous contacts, is it possible to
>> make call to one/more than one person simultaneously from all the contacts.
>> > Obviously no.
>> > rite?
>> > On Mon, Jul 25, 2011 at 4:35 PM, Karthikeyan Selvaraj <
>> karthikeyan.selvaraj at sasken.com<mailto:karthikeyan.selvaraj at sasken.com>>
>> wrote:
>> > hi I checked with RFC3261 , they did't mention any thing about TO and
>> FROM headers.
>> >
>> >
>> > Regards,
>> > Karthikeyan S
>> >
>> >
>> > From: tester voip [mailto:tester.voip1 at gmail.com<mailto:
>> tester.voip1 at gmail.com>]
>>
>> > Sent: Monday, July 25, 2011 3:53 PM
>> > To: Karthikeyan Selvaraj
>> > Cc: franz.edler at kabsi.at<mailto:franz.edler at kabsi.at>;
>> discussion at sipforum.org<mailto:discussion at sipforum.org>
>>
>> >
>> > Subject: Re: [SIPForum-discussion] Reg: Small doubt in SIP message..
>> >
>> > Via,Route,Record-Route,Contact(incase of Register) etc can have multiple
>> numbers in a msg.
>> >
>> > But no such rules for TO and FROM headers.
>> >
>> > Please refer 3261 for more understanding of all the headers.
>> >
>> > Thanks
>> > On Mon, Jul 25, 2011 at 3:47 PM, Karthikeyan Selvaraj <
>> karthikeyan.selvaraj at sasken.com<mailto:karthikeyan.selvaraj at sasken.com>>
>> wrote:
>> > Hi ,
>> > As per the below answer, the ROUTE header present in more than one and
>> VIA header also.
>> > So any special rules for TO and FROM headers.
>> >
>> >
>> > Regards,
>> > Karthikeyan S
>> >
>> >
>> > From: tester voip [mailto:tester.voip1 at gmail.com<mailto:
>> tester.voip1 at gmail.com>]
>>
>> > Sent: Monday, July 25, 2011 3:19 PM
>> > To: franz.edler at kabsi.at<mailto:franz.edler at kabsi.at>
>> > Cc: Karthikeyan Selvaraj; discussion at sipforum.org<mailto:
>> discussion at sipforum.org>
>>
>> > Subject: Re: [SIPForum-discussion] Reg: Small doubt in SIP message..
>> >
>> > There will b 400 Bad request from UAS/B2B(if in between) as there cant b
>> more than 1 such headers in INVITE.
>>  > On Mon, Jul 25, 2011 at 12:31 AM, Franz Edler <franz.edler at kabsi.at
>> <mailto:franz.edler at kabsi.at>> wrote:
>> >> suppose the sip message contains more than one TO and FROM headers.
>> >> What will happen in server side?
>> >> it take top most value or reject the message ?
>> > It will (most probably) reject the message.
>> >
>> > BR
>> > Franz
>> >
>> >
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>> >
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>
>
> --
> HM Kias
> 91-9443467600
>
>
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