Thomas Froment schrieb:
Klaus Darilion wrote:
Hi Robert!
Robert Sparks schrieb:
19% supported SIP over IPSec
What do you mean with "SIP over IPSec"? Every protocol runs over IPSec
as it is transparent to the application.
Well, SIP over IPsec is not really "transparent" to the SIP implementation:
when you want to send a request over an IPSec SA, you MUST be able to
choose what is the source interface / source port and destination
interface / destination port. This is not something so easy to implement
at SIP transport level.
I still do not get it. You can use IPSec without any additional
interfaces. If the IPSec implementation creates tunnel interfaces, that
may cause problems to SIP client. But then the problem is due to tunnel
interfaces (which can be anything, not only IPsec), not due to IPSec.
So if the SIP client does not care if the communication is secured with
IPsec, then every client should work over IPsec too.
So the question is still - what means "supported SIP over IPSec"?
Does it mean, "Is the SIP client capable of retrieving IPsec information
from the kernel to find out if a message will be sent via IPsec secured way?
regards
klaus
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