[Lwip] Suggestions in draft-mglt-lwig-minimal-esp

[Raja ashok <[e-mail]>]

Hi Daniel & Tobias,

I gone through the lwIG draft for ESP. I am having some doubts and suggestions which are listed below. Please check and provide your comments.


1)      For replay protection, RFC 4303 suggests to use 32 or 64 bit window. I feel in this draft, we can recommend to use 32 bit window for replay protection.


2)      Tunneled ESP msg with fragmented IP header (in ESP payload) may leads to DoS vulnerability for a constraint receiver. RFC 4303 is suggesting this fragmentation as optional. So I feel we can mention as fragmentation and reassembly is not required to support in tunneled IP header. As it can be handled by the IP header which carries ESP msg. I hope tunneled ESP msg might be required in some scenarios of constraint devices also.

Regards,
Ashok

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Raja Ashok V K
Huawei Technologies
Bangalore, India
http://www.huawei.com
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