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$OpenBSD: README,v 1.5 1998/12/21 01:02:22 niklas Exp $
$EOM: README,v 1.12 1998/12/19 09:18:18 niklas Exp $
This is isakmpd, a BSD-licensed ISAKMP/Oakley (a.k.a. IKE)
implementation. It's written by Niklas Hallqvist and Niels Provos,
funded by Ericsson Radio Systems AB. Currently it is work in
progress, although it can be used for real setups if some features are
not used. For example it does not renegotiate SAs when an application
says they have expired. It is not released, thus I won't bother
calling it any version numbers. When you got the source, hopefully
the archive was named with a date which reflects when it was created.
These archives are also known as snapshots and will be created at
irregular intervals and put up on ftp.gsnig.net and ftp.appli.se in
/pub/isakmpd. From Nov 14, 1998 isakmpd is also available in the
OpenBSD main source tree under src/sbin/isakmpd, though slightly
modified for patent reasons. Look at http://www.openbsd.org/ for
details on how to get OpenBSD source.
Isakmpd is being developed under OpenBSD, with OpenBSD as its primary
target, soon enough however, a Linux effort will be started. Until
then the makefile support assumes a BSD environment.
Assuming you have an OpenBSD /usr/share/mk and use the OpenBSD (or
similar) make(1), you build isakmpd this way:
ln -s sysdep-openbsd.c sysdep.c
make obj && make depend && make
Then obj/isakmpd will be the daemon. I suggest you try it by running
under gdb with args similar to:
-d -n -p5000 -D0=99 -D1=99 -D2=99 -D3=99 -D4=99 -D5=99 \
-f/tmp/isakmpd.fifo -cisakmpd.conf.sample
That will run isakmpd in the foreground, not connected to any application
(like an IPSEC implementation) logging to stderr with full debugging ouput,
listening on UDP port 5000, accepting control commands via the named pipe
called /tmp/isakmpd.fifo and reading its configuration from the
isakmpd.conf.sample file (found in the isakmpd directory).
If you are root you can try to run without -n -p5000 thus getting it to
talk to your IPSec stack and use the standard port 500 instead.
Read log.[ch] and ui.c to see how to alter the debugging levels.
Now you have setup your daemon and can watch incoming negotiations.
But how do you get such? Either use http://isakmp-test.ssh.fi/,
there's an excellent service, just waiting for you. Or you can try to
start another isakmpd on another port (say -p5001 or so, instead)
and another fifo (let's say /tmp/other.fifo). Then edit the config
file to have some peer descriptions that fit your need and issue a
command like this:
$ echo "C IPsec-peer-1" >/tmp/other.fifo
and watch. You can turn on debugging on that isakmpd too of course, for
greater fun.
You will by now have noticed that this implementation is incomplete, but
who cares? You are here because you want to read code, start porting work
or help us out fixing what need's to be fixed.
Happy IKEing!
Niklas Hallqvist <niklas@openbsd.org>
Niels Provos <provos@openbsd.org>
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