Re: hamachi p2p vpn nat-friendly protocol details

2006-02-28 Thread Alex Pankratov
Tero Kivinen wrote: > Alex Pankratov writes: > There might be (I am not sure whether AUTH packet is encrypted and MACed) a MAC over it, but the MAC key is not yet authenticated as it is generated from the anonymous Diffie-Hellman. That might give it some protection, but I am not

Re: hamachi p2p vpn nat-friendly protocol details

2006-02-28 Thread Eric Rescorla
"Travis H." <[EMAIL PROTECTED]> writes: > On 2/24/06, Alex Pankratov <[EMAIL PROTECTED]> wrote: >> Tero Kivinen wrote: >> >> Secondly I cannot find where it >> >> authenticates the crypto suite used at all (it is not included in the >> >> signature of the AUTH message). >> >> Crypto suite is essen

Re: hamachi p2p vpn nat-friendly protocol details

2006-02-26 Thread Alex Pankratov
Travis H. wrote: > On 2/24/06, Alex Pankratov <[EMAIL PROTECTED]> wrote: > >>Tero Kivinen wrote: [snip] The protocol description is missing some details, so cannot say anything about them (things like what is the format of Ni, Nr, Gi, Gr when sent over wire and when put to the sign

Re: hamachi p2p vpn nat-friendly protocol details

2006-02-26 Thread Travis H.
On 2/24/06, Alex Pankratov <[EMAIL PROTECTED]> wrote: > Tero Kivinen wrote: > >> Secondly I cannot find where it > >> authenticates the crypto suite used at all (it is not included in the > >> signature of the AUTH message). > > Crypto suite is essentially just a protocol number. It requires > no a

Re: hamachi p2p vpn nat-friendly protocol details

2006-02-26 Thread Alex Pankratov
I replied to Tero privately, then realized that I was not the only recipient of his email. So here's a copy for everyone's reference. Alex Tero Kivinen wrote: >> Travis H. writes: >> > http://www.hamachi.cc/security Based on a cursory look over this, I'm impressed by both the level

hamachi p2p vpn nat-friendly protocol details

2006-02-23 Thread Travis H.
http://www.hamachi.cc/security Based on a cursory look over this, I'm impressed by both the level of detail and the level of security apparently afforded. Too bad I can't see the source code. -- Security Guru for Hire http://www.lightconsulting.com/~travis/ -><- GPG fingerprint: 9D3F 395A DAC5 5C