isoftwire-7----Page:18
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Why move to L2TPv3? Cons of L2TPv2 as compared to L2TPv3: Weaker Tunnel Authentication mechanism which validates only the header portion of the control messages and covering only SCCRQ, SCCRP and SCCCN message types No built-in data channel security. Must be bundled with IPSec to achieve security 16-bits session Ids as compared to L2TPv3 32-bits session Ids |