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[Question #227455]: IPsec and ROHC

To: rohc@xxxxxxxxxxxxxxxxxxx
From: matthew <question227455@xxxxxxxxxxxxxxxxxxxxx>
Date: Thu, 25 Apr 2013 16:21:28 -0000
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New question #227455 on rohc:
https://answers.launchpad.net/rohc/+question/227455

Hi All, 

The system I'm looking to implement requires the use of Strong Swan to establish IPSec between two end points, using tunnel mode, though that last part might be up for negotiation.

I wish to implement ROHC in combination with the IPSec.  The problem is I don't fully understand how StrongSwan works, or even how IPSec within Linux functions at the software source code level.  Even something as simple as understanding what happens to my IP packet once it leaves netcat has been difficult for me to achieve.  

So how would you go about tackling this problem, what do you think my options are?  

Do I compress just the UDP and RTP headers prior to IPSec, does that work?  Can I do better and get compression of the IP header as well?



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