[vpn] Security Aspects Question.

I need to compare some basic security properties for different VPN 
solutions. I have listed a few that I could think of below. If you have 
opinions about additional one, I will appreciate if you can list them 
here.


Does Tinc Support the following (I have marked the ans's that I 
think I know):

1. Confidentiality: Yes (Packets are encrypted)
2. Data-integrity: Yes (using digest: SHA1)
3. Authentication/Non-Repudiation (Both at the session and data-packet 
level): Yes 
4. Anti-Replay protection: ??
5. Forward Secrecy: ??
6. Does it have a user Space Impl: ??

Thanks
Shashank




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