A question for IPsec ---ISAKMP

[aaabbb16@hotmail.com]

Hi,
I remembered that pre shared key use for ISAKMP phase-1.
for authentication. Is that right? (ESP)

There are total six frames for main mode during phase 1
First two frames look easy to understand.
How about the third and fourth frame. What do they do in detail?
Can anyone give a little bit more detail operation?


TIA,
st

[Bartosz Gagat]

You are generally correct. Frames 3 and 4 - this is diffie hellman group
exchange.
Regards
Bartosz Gagat
<aaabbb16@hotmail.com> wrote in message
news:d114ed1c-a9d6-4b43-a913-323050af7c25@c36g2000prc.googlegroups.com...
> Hi,
> I remembered that pre shared key use for ISAKMP phase-1.
> for authentication. Is that right? (ESP)
>
> There are total six frames for main mode during phase 1
> First two frames look easy to understand.
> How about the third and fourth frame. What do they do in detail?
> Can anyone give a little bit more detail operation?
>
>
> TIA,
> st
>
>