FAST_IPSEC(4)						   BSD Kernel Interfaces Manual 					     FAST_IPSEC(4)

NAME

     fast_ipsec -- Fast IPsec hardware-accelerated IP Security Protocols

SYNOPSIS

     options IPSEC
     options IPSEC_DEBUG
     options IPSEC_NAT_T

DESCRIPTION

     IPsec is a set of protocols, ESP (for Encapsulating Security Payload) AH (for Authentication Header), and IPComp (for IP Payload Compression
     Protocol) that provide security services for IP datagrams.  Fast IPsec is an implementation of these protocols that uses the opencrypto(9)
     subsystem to carry out cryptographic operations.  This means, in particular, that cryptographic hardware devices are employed whenever possi-
     ble to optimize the performance of these protocols.

     In general, the Fast IPsec implementation is intended to be compatible with the KAME IPsec implementation.  The user should refer to ipsec(4)
     for basic information on setting up and using these protocols.

     System configuration requires the opencrypto(9) subsystem.  When the Fast IPsec protocols are configured for use, all protocols are included
     in the system.  To selectively enable/disable protocols, use sysctl(8).

DIAGNOSTICS

     To be added.

SEE ALSO

     kame_ipsec(4), setkey(8), sysctl(8), opencrypto(9)

HISTORY

     The protocols draw heavily on the OpenBSD implementation of the IPsec protocols.  The policy management code is derived from the KAME imple-
     mentation found in their IPsec protocols.	The Fast IPsec protocols are based on code which appeared in FreeBSD 4.7.  The NetBSD version is a
     close copy of the FreeBSD original, and first appeared in NetBSD 2.0.

     Support for IPv6 and IPcomp protocols has been added in NetBSD 4.0.

     Support for IPSEC_NAT_T (Network Address Translator Traversal as described in RFCs 3947 and 3948) has been added in NetBSD 5.0.

BUGS

     Certain legacy authentication algorithms are not supported because of issues with the opencrypto(9) subsystem.

     This documentation is incomplete.

BSD
								 January 23, 2012							       BSD