Good
point. We generally define VPN's in one of three ways:
-
remote access VPN's - used for folks to reach corporate networks via their home
or mobile Internet connection
-
point-to-point intranet VPN's - used to replace traditional leased line services
(or frame relay)
-
point-to-point extranet VPN's - used to connect corporations together over the
Internet
You
could also define a fourth class if you look at dial-up services such as
CompuServe that can route analog calls across their network to a gateway into
the corporate network.
Within
each of these classes, there are multiple ways of provisioning VPN
services. FWIW, I don't know of anyone today that is deploying MPLS-based
VPNs (either based on RFC 2547 or the Virtual Router concept), though I expect
we'll see those sorts of services toward the end of next year. The nicest
feature of the MPLS approach is that you can connect sites using private
addressing via the public Internet.
As far
as books, I recommend "Building and Managing Virtual Private Networks" by Dave
Kosiur. Disclaimer: Dave and I work together at The Burton Group.
Irwin
|
- Need info on VPN. karthikeyan
- Re: Need info on VPN. Patrick Bass
- RE: Need info on VPN. Ikpasa, Kerry
- RE: Need info on VPN. Peter Van Oene
- RE: Need info on VPN. Irwin Lazar
- RE: Need info on VPN. Ikpasa, Kerry
- FW: Need info on VPN. Irwin Lazar
- FW: Need info on VPN. Faxon, James