27 Jun
2017
27 Jun
'17
11:28 a.m.
Thank you for your prompt reply!
The security hole about RTP injection is not a problem because we use in our solution
encrypted voice protocols, so if an attacker tries to inject malicious RTP data would be
discarded by the encrypted protocol
--
Emanuele Gambaro
---
email: emanuele.gambaro(a)pynlab.com
skype: sarbyn_work
OpenPGP Key: https://goo.gl/fdeVnI
Il giorno 27 giu 2017, alle ore 11:15, Daniel Tryba
<d.tryba(a)pocos.nl> ha scritto:
On Tue, Jun 27, 2017 at 11:03:00AM +0200, Emanuele Gambaro wrote:
Hi to all
I have the following scenario (Kamailio 5 and rtpproxy)
*) Bob on a wifi network calls Alice
*) During the call, Bob losts his wifi network (and so also changes his IP address)
*) The RTP flow is interrupted
With asterisk, disabling “Strict RTP” option, the flow does not interrupts: Asterisk
detect the new IP address and sends the audio packets to the new IP address.
It is possible to setup this behavior also with Kamailio?
Don't know about rtpproxy, but rtpengine has the following option that
implements your use case:
"media handover
Similar to the strict source option, but instead of dropping packets
when the source address or port don't match, the endpoint address will
be re-learned and moved to the new address. This allows endpoint
addresses to change on the fly without going through signalling again.
Note that this opens a security hole and potentially allows RTP streams
to be hijacked, either partly or in whole."
_______________________________________________
Kamailio (SER) - Users Mailing List
sr-users(a)lists.kamailio.org
https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users