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- import of strongswan-2.7.0

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- applied patch for charon
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Martin Willi
2006-04-28 07:14:48 +00:00
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INSTALL
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---------------------------
strongSwan - Installation
---------------------------
Contents
--------
1. Required packages
2. Optional packages
2.1 libcurl
2.2 OpenLDAP
2.3 PKCS#11 smartcard library modules
3. Building strongSwan with a Linux 2.4 kernel
4. Updating strongSwan with a Linux 2.4 kernel
5. Building strongSwan with a Linux 2.6 kernel
1. Required packages
-----------------
In order to be able to build strongSwan you'll need the GNU Multiprecision
Arithmetic Library (GMP) available from http://www.swox.com/gmp/.
The libgmp library and the corresponding header file gmp.h are usually
included in the form of one or two packages in the major Linux
distributions (SuSE: gmp; Debian unstable: libgmp3, libgmp3-dev).
2. Optional packages
-----------------
2.1 libcurl
-------
If you intend to dynamically fetch Certificate Revocation Lists (CRLs)
from an HTTP server or as an alternative want to use the Online
Certificate Status Protocol (OCSP) then you will need the libcurl library
available from http://curl.haxx.se/.
In order to keep the library as compact as possible for use with strongSwan
you can build libcurl from the sources with the optimized options
./configure --prefix=<dir> --without-ssl \
--disable-ldap --disable-telnet \
--disable-dict --disable-gopher \
--disable-debug \
--enable-nonblocking --enable-thread
As an alternative you can use the ready-made packages included with your
favorite Linux distribution (SuSE: curl, curl-devel).
In order to activate the use of the libcurl library in strongSwan you must
set the USE_LIBCURL option in "Makefile.inc":
# include libcurl support (CRL fetching, OCSP and SCEP)
USE_LIBCURL?=true
Under Gentoo emerge strongSwan with
USE="curl -ssl" emerge strongswan
2.2 OpenLDAP
--------
If you intend to dynamically fetch Certificate Revocation Lists (CRLs)
from an LDAP server then you will need the libldap library available
from http://www.openldap.org/.
OpenLDAP is usually included with your Linux distribution. You will need
both the run-time and development environments (SuSE: openldap2,
openldap2-devel).
In order to activate the use of the libldap library in strongSwan you must
set the USE_LDAP option in "Makefile.inc":
# include LDAP support (CRL fetching)
USE_LDAP?=true
Depending upon whether your LDAP server understands the V3 (preferred) or
V2 LDAP protocol, uncomment one ot the two following lines:
# Uncomment to enable dynamic CRL fetching using LDAP V3
LDAP_VERSION=3
# Uncomment to enable dynamic CRL fetching using LDAP V2
#LDAP_VERSION=2
The latest OpenLDAP releases use the LDAP V3 protocol, whereas older
versions require LDAP V2.
Under Gentoo emerge strongSwan with
USE="ldap -ssl" emerge strongswan
2.3 PKCS#11 smartcard library modules
---------------------------------
If you want to securely store your X.509 certificates and private RSA keys
on a smart card or a USB crypto token then you will need a PKCS #11 library
for the smart card of your choice. The OpenSC PKCS#11 library (use
versions >= 0.9.4) available from http://www.opensc.org/ supports quite a
selection of cards and tokens (e.g. Aladdin eToken Pro32k, Schlumberger
Cryptoflex e-gate, Oberthur AuthentIC, etc.) but requires that a PKCS#15
directory structure be present on the smart card. But in principle
any other PKCS#11 library could be used since the PKCS#11 API hides the
internal data representation on the card.
For USB crypto token support you must add the OpenCT driver library
(version >= 0.6.2) from the OpenSC site, whereas for serial smartcard
readers you'll need the pcsc-lite library and the matching driver from the
M.U.S.C.L.E project http://www.linuxnet.com/ .
In order to activate the PKCS#11-based smartcard support in strongSwan
you must set the USE_SMARTCARD option in "Makefile.inc":
#include PKCS11-based smartcard support
USE_SMARTCARD?=true
During compilation no externel smart card libraries must be present.
strongSwan directly references a copy of the standard RSAREF pkcs11.h
header files stored in the pluto/rsaref sub directory. During compile
time a pathname to a default PKCS#11 dynamical library can be specified
in "Makefile.inc"
# Uncomment this line if using OpenSC <= 0.9.6
PKCS11_DEFAULT_LIB=\"/usr/lib/pkcs11/opensc-pkcs11.so\"
# Uncomment tis line if using OpenSC >= 0.10.0
#PKCS11_DEFAULT_LIB=\"usr/lib/opensc-pkcs11.so\"
This default path to the easily-obtainable OpenSC library module can be
simply overridden during run-time by specifying an alternative path in
ipsec.conf pointing to any dynamic PKCS#11 library of your choice.
config setup
pkcs11module="/usr/lib/xyz-pkcs11.so"
Under Gentoo emerge strongSwan with
USE="smartcard usb -pam -X" emerge strongswan
3. Building strongSwan with a Linux 2.4 kernel
-------------------------------------------
* Building strongSwan with a Linux 2.4 kernel requires the presence of the
matching kernel sources referenced via the symbolic link /usr/src/linux.
The use of the vanilla kernel sources from ftp.kernel.org is strongly
recommended.
Before building strongSwan you must have compiled the kernel sources at
least once:
make menuconfig; make dep; make bzImage; make modules
* Now change into the strongswan-2.x.x source directory.
First uncomment any desired compile options in "programs/pluto/Makefile"
(see section 2. Optional packages).
Then in the top source directory type
make menumod
This command applies an ESP_IN_UDP encapsulation patch which is required
for NAT-Traversal to the kernel sources.
In the "Networking options" menu set
<M> IP Security Protocol (strongSwan IPsec)
in order to build KLIPS as a loadable kernel module "ipsec.o". Do not
forget to save the modified configuration file when leaving "menumod".
The strongSwan userland programs are now automatically built and
installed, whereas the ipsec.o kernel module and the crypto modules
are only built and must be installed with the command
make minstall
* If you intend to use the NAT-Traversal feature then you must compile the
patched kernel sources again by executing
make bzImage
and then install and boot the modified kernel.
* Next add your connections to "/etc/ipsec.conf" and start strongSwan with
ipsec setup start
4. Updating strongSwan with a Linux 2.4 kernel
-------------------------------------------
* If you have already successfully installed strongSwan and want to update
to a newer version then the following shortcut can be taken:
First uncomment any desired compile options in "programs/pluto/Makefile"
(see section 2. Optional packages).
Then in the strongwan-2.x.x top directory type
make programs; make install
followed by
make module; make minstall
* You can then start the updated strongSwan version with
ipsec setup restart
5. Building strongSwan with a Linux 2.6 kernel
-------------------------------------------
* Because the Linux 2.6 kernel comes with a built-in native IPsec stack,
you won't need to build the strongSwan kernel modules. Please make sure
that the the following Linux 2.6 IPsec kernel modules are available:
o af_key
o ah4
o esp4
o ipcomp
o xfrm_user
Also the built-in kernel Cryptoapi modules with selected encryption and
hash algorithms should be available.
* First uncomment any desired compile options in "programs/pluto/Makefile"
(see section 2. Optional packages).
Then in the strongwan-2.x.x top directory type
make programs
followed by
make install
* Next add your connections to "etc/ipsec.conf" and start strongSwan with
ipsec setup start
-----------------------------------------------------------------------------
This file is RCSID $Id: INSTALL,v 1.8 2006/01/22 16:22:23 as Exp $