June 2005
Intermediate to advanced
312 pages
11h 13m
English
Content preview from MPLS VPN Security
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132 Chapter 4: Secure MPLS VPN Designs
NOTE This book cannot list all Layer 2 security issues and solutions; it only can raise attention to
the problems. All known Layer 2 security issues have solutions, so implementing security at
Layer 2 is not an unsolvable task and must be done. Chapter 7 discusses Layer 2 security in
more detail.
Layer 2 security must be considered on every shared connection. For example, if two CEs
of different VPNs connect to a single PE over an Ethernet switch, it would be theoretically
possible to put all CEs into a single VLAN and provide separation through some form of
tunnel, such as generic routing encapsulation (GRE). ...
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