June 2005
Intermediate to advanced
312 pages
11h 13m
English
Content preview from MPLS VPN Security
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Threats Against an Extranet Site
31
Figure 2-3
Attack Points for DoS Against a VPN
Threats Against an Extranet Site
There are various definitions for the term
extranet
. Generally speaking, an extranet allows
different VPNs to interconnect and potentially share common resources. In MPLS VPNs,
there are two main ways to implement extranets:
•
Integrated intranet and extranet
—Sites of different VPNs interconnect directly
by controlling the route targets on the PE routers. In this case, the extranet consists
of existing sites of the various VPNs, and from a security point of view, this type of
extranet is just another way to interconnect VPN ...
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