VPN and IPSec

De, Santanu* (SDE) SDE at ARINC.COM
Thu Feb 10 16:43:52 EST 2000


Hi,

I have been subscribing to this email mailing list for quite a while now. I
am really interested in the VPN stuff. Though I'd admit I have never laid a
hand on any of the related products.
I work in networking stuff.. ISO -OSI standard- HDLC and all.. though I was
never in TCP/IP suite of protocols. Nevertheless, I never miss any article
or interesting white paper that I come across.
I understand that IPSec is a pretty new technology around for a couple of
years or less. I was told that IPSec is implemented in Win2K. Some of the
routers have also come with IPSec implemented.
May I know what is a VPN client after all? I understand that routers that
are IPSec enabled give the network administrators the privilege to decide
which packets are to be tunneled and which not to be.
I presume VPN clients are software which gives the user this privilege to
decide. Am I right? Could one elaborate how these VPN clients work after
all.
I also want to know that how IPSec or other newer protocols are implemented
in systems where the OS is not IPSec enabled as such. Could one tell me how
the BITS and BITW implementations are done? Could I have an access to some
open source code for my interests?

Regards,
Santanu.

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