A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the IP Security Maintenance and Extensions Working 
Group of the IETF.


        Title           : Wrapped ESP for Traffic Visibility
        Author(s)       : K. Grewal, G. Montenegro
        Filename        : draft-ietf-ipsecme-traffic-visibility-01.txt
        Pages           : 9
        Date            : 2009-03-09

This document describes an ESP encapsulation for IPsec, allowing 
intermediate devices to ascertain if ESP-NULL is being employed 
and hence inspect the IPsec packets for network monitoring and
 access control functions.  Currently in the IPsec standard, 
there is no way to differentiate between ESP encryption and ESP 
NULL encryption by simply examining a packet.

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