ipsec design related questions.

["JEEVA" <jeevas@future.futsoft.com>]

hi,
	 i just had a doubt - where is IPSec placed in the network stack?
conceptually, IPSec should be placed like this (please comment if wrong):
   Design -1
		+--------------------------------+
			Tcp/udp
  		 +--------------------------------+
                          IP other functions (Like routing etc.)
		 +--------------------------------+
		    IPSec
		 +--------------------------------+
		    low -level layer fuctions
		 +--------------------------------+

Design - 2 :

		+--------------------------------+
			tcp/udp
		+--------------------------------+
		   IPsec
		+-------------------------------+
		    IP other fuctions.
		+------------------------------+
		low-level layer functions
		+-------------------------------+

Design -3 :
		+-------------------------------+
		tcp/udp
		+-------------------------------+
		IP/ IPsec
		+------------------------------+
		low -level layer functions.
		+-----------------------------+

Design - 4:
		+---------------------------------+
		applications
		+---------------------------------+

		----------------------------------
		some intermediate layer for making ipsec independent. (e.g to implement
socket layer )
		-----------------------------------

		---------------------------------
			IPsec
		-------------------------------


thnaks.
regards,
jeeva.

---

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