1 .\" $OpenBSD: enc.4,v 1.22 2006/05/26 08:51:29 jmc Exp $
3 .\" Copyright (c) 1999 Angelos D. Keromytis
4 .\" All rights reserved.
6 .\" Redistribution and use in source and binary forms, with or without
7 .\" modification, are permitted provided that the following conditions
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17 .\" This product includes software developed by Angelos D. Keromytis.
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39 .Nd Encapsulating Interface
41 To compile this driver into the kernel,
42 place the following line in your
43 kernel configuration file:
44 .Bd -ragged -offset indent
50 interface is a software loopback mechanism that allows hosts or
53 traffic using any firewall package that hooks in via the
59 interface allows an administrator
60 to see outgoing packets before they have been processed by
62 or incoming packets after they have been similarly processed, via
67 interface inherits all IPsec traffic.
68 Thus all IPsec traffic can be filtered based on
70 and all IPsec traffic could be seen by invoking
76 To see all outgoing packets before they have been processed via
78 or all incoming packets after they have been similarly processed: