Ricoh SP 213w We recommend this type for communication between security, For Encapsulation Type

4. Configuring the Machine Using Utilities

IPsec Settings

Item	Description
Encapsulation Type	Specify the encapsulation type from the following:
	• [Transport]: Select this mode to secure only the payload section of
	each IP packet when communicating with IPsec compliant devices.
	• [Tunnel]: Select this mode to secure every section of each IP packet.
	We recommend this type for communication between security
	gateways (such as VPN devices).
Security Protocol	Select the security protocol from the following:
	• [AH]: Establishes secure communication that supports authentication
	only.
	• [ESP]: Establishes secure communication that supports both
	authentication and data encryption.
	• [ESP&AH]: Establishes secure communication that supports both data
	encryption and authentication of packets, including packet headers.
	Note that you cannot specify this protocol when [Tunnel] is selected
	for [Encapsulation Type].
Authentication	Specify the authentication algorithm to be applied when [AH] or [ESP&AH]
Algorithm for AH	is selected for [Security Protocol] from the following:
	[MD5], [SHA1]
Encryption Algorithm	Specify the encryption algorithm to be applied when [ESP] or [ESP&AH] is
for ESP	selected for [Security Protocol] from the following:
	[None], [DES], [3DES], [AES-128], [AES-192], [AES-256]
Authentication	Specify the authentication algorithm to be applied when [ESP] is selected
Algorithm for ESP	for [Security Protocol] from the following:
	[MD5], [SHA1]
Life Time	Specify the life time of the IPsec SA (Security Association) as a time period
	or data volume. The SA will expire when the time period you specify
	elapses or the volume of data you specify reaches the volume carried.
	If you specify both a time period and a data volume, the SA will expire as
	soon as either is reached, and a new SA will then be obtained by
	negotiation.
	To specify the life time of the SA as a time period, enter a number of
	seconds.
	To specify the life time of the SA as a data volume, enter a number of KBs.

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