[SR-Users] Implementing encryption

[Vitaliy Aleksandrov]

It works pretty good.
But when I was testing such an implementation with imitation of high 
latency (200ms) and packet loss(about 15%) voice over UDP worked much 
better since TCP was trying to retransmit lost segments.
I think TCP_NODELAY must be always enabled to avoid packets 
concatenation at sender's outgoing buffer to reduce latency.

> Hello,
>
> This was a concept raised in my mind and was looking for a lead or
> hint to get started to work on routing rtp via tcp. ( On SIP phone as
> well as Kamailio ). I knew through googling there has been such
> implementation and thus to make sure it is an absolute possibility. So
> here, I am just trying my luck to interact with developers who has
> worked on such project, if any.
>
> Warm Regards
> Selvam
>
> On 3/26/13, Daniel-Constantin Mierla <miconda at gmail.com> wrote:
>> Hello,
>>
>> On 3/26/13 9:46 AM, Techie Sup wrote:
>>> Hi Daniel,
>>>
>>> Its more of a customized encryption technique I am looking for.
>> that is a bit vague, maybe you can give some examples.
>>
>> Nobody here did an invention on encryption techniques, if that is the
>> question. Otherwise, if you look for particular mechanism, even not
>> implemented, we can say if it can be done or not.
>>> Encryption of SIP and RTP is already addressed as I can see from many
>>> threads, but important part is whether is there any possibility of
>>> routing rtp over tcp.  Is it a possible concept or impossible task to
>>> implement it on kamailio. I just want a lead about this concept.
>> Routing rtp via tcp is possible as technology, being pretty much what
>> happens with some VPN systems. But it is not only a matter of kamailio,
>> but also of SIP phone.
>>
>> Cheers,
>> Daniel
>>
>>> Warm Regards
>>> Selvam
>>>
>>> On 3/26/13, Daniel-Constantin Mierla <miconda at gmail.com> wrote:
>>>> Hello,
>>>>
>>>> On 3/25/13 9:31 PM, Techie Sup wrote:
>>>>> Hello,
>>>>>
>>>>> Any successful implementation of adding some customized security
>>>>> (encryption) over sip and rtp in kamailio? (non TLS)  Also looking for
>>>>> assistance on the concept of rtp over tcp using kamailio and rtpproxy.
>>>> using VPN/ipsec tunnel is a way to get both sip and rtp encrypted
>>>> between two SIP nodes.
>>>>
>>>> Other than TLS, Kamailio does not do any encryption for SIP. What
>>>> alternatives you would look for?
>>>>
>>>> Cheers,
>>>> Daniel
>>>>
>>>> --
>>>> Daniel-Constantin Mierla - http://www.asipto.com
>>>> http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
>>>> Kamailio World Conference, April 16-17, 2013, Berlin
>>>>     - http://conference.kamailio.com -
>>>>
>>>>
>>>> _______________________________________________
>>>> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
>>>> sr-users at lists.sip-router.org
>>>> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>>>>
>> --
>> Daniel-Constantin Mierla - http://www.asipto.com
>> http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
>> Kamailio World Conference, April 16-17, 2013, Berlin
>>    - http://conference.kamailio.com -
>>
>>
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