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diff --git a/main/openvpn/INSTALL b/main/openvpn/INSTALL new file mode 100644 index 00000000..2ef7904b --- /dev/null +++ b/main/openvpn/INSTALL @@ -0,0 +1,336 @@ +Installation instructions for OpenVPN, a Secure Tunneling Daemon + +Copyright (C) 2002-2010 OpenVPN Technologies, Inc. This program is free software; +you can redistribute it and/or modify +it under the terms of the GNU General Public License version 2 +as published by the Free Software Foundation. + +************************************************************************* + +QUICK START: + + Unix: + ./configure && make && make-install + + Cross-compile for Windows on Unix + + See INSTALL-win32.txt + +************************************************************************* + +To download OpenVPN, go to: + + http://openvpn.net/download.html + +OpenVPN releases are also available as Debian/RPM packages: + + https://community.openvpn.net/openvpn/wiki/OpenvpnSoftwareRepos + +To download easy-rsa go to: + + https://github.com/OpenVPN/easy-rsa + +To download tap-windows driver source code go to: + + https://github.com/OpenVPN/tap-windows + +To get the cross-compilation environment go to: + + https://github.com/OpenVPN/openvpn-build + +For step-by-step instructions with real-world examples see: + + http://openvpn.net/howto.html + https://community.openvpn.net/openvpn/wiki + +For examples see: + + http://openvpn.net/examples.html + +Also see the man page for more information, usage examples, and information on +firewall configuration. + +************************************************************************* + +SUPPORTED PLATFORMS: + (1) Linux (kernel 2.6+) + (2) Solaris + (3) OpenBSD 5.1+ + (4) Mac OS X Darwin 10.5+ + (5) FreeBSD 7.4+ + (6) NetBSD 5.0+ + (7) Windows (WinXP and higher) + +SUPPORTED PROCESSOR ARCHITECTURES: + In general, OpenVPN is word size and endian independent, so + most processors should be supported. Architectures known to + work include Intel x86, Alpha, Sparc, Amd64, and ARM. + +REQUIRES: + (1) TUN and/or TAP driver to allow user-space programs to control + a virtual point-to-point IP or Ethernet device. See + TUN/TAP Driver Configuration section below for more info. + +OPTIONAL (but recommended): + (1) OpenSSL library, necessary for encryption, version 0.9.8 or higher + required, available from http://www.openssl.org/ + (2) PolarSSL library, an alternative for encryption, version 1.1 or higher + required, available from https://polarssl.org/ + (3) LZO real-time compression library, required for link compression, + available from http://www.oberhumer.com/opensource/lzo/ + OpenBSD users can use ports or packages to install lzo, but remember + to add CFLAGS="-I/usr/local/include" LDFLAGS="-L/usr/local/lib" + directives to "configure", since gcc will not find them otherwise. + +OPTIONAL (for developers only): + (1) Autoconf 2.59 or higher + Automake 1.9 or higher + -- available from http://www.gnu.org/software/software.html + (2) Dmalloc library + -- available from http://dmalloc.com/ + (3) If using t_client.sh test framework, fping/fping6 is needed + -- Available from http://www.fping.org/ + Note: t_client.sh needs an external configured OpenVPN server. + See t_client.rc-sample for more info. + +************************************************************************* + +CHECK OUT SOURCE FROM SOURCE REPOSITORY: + + Clone the repository: + + git clone https://github.com/OpenVPN/openvpn + git clone git://openvpn.git.sourceforge.net/gitroot/openvpn/openvpn + + Check out stable version: + + git checkout -b 2.2 remotes/origin/release/2.2 + + Check out master (unstable) branch: + + git checkout master + + +************************************************************************* + +BUILD COMMANDS FROM TARBALL: + + ./configure + make + make install + +************************************************************************* + +BUILD COMMANDS FROM SOURCE REPOSITORY CHECKOUT: + + autoreconf -i -v -f + ./configure + make + make install + +************************************************************************* + +BUILD A TARBALL FROM SOURCE REPOSITORY CHECKOUT: + + autoreconf -i -v -f + ./configure + make dist + +************************************************************************* + +TESTS (after BUILD): + +make check (Run all tests below) + +Test Crypto: + +./openvpn --genkey --secret key +./openvpn --test-crypto --secret key + +Test SSL/TLS negotiations (runs for 2 minutes): + +./openvpn --config sample/sample-config-files/loopback-client (In one window) +./openvpn --config sample/sample-config-files/loopback-server (Simultaneously in another window) + +For more thorough client-server tests you can configure your own, private test +environment. See tests/t_client.rc-sample for details. + +************************************************************************* + +OPTIONS for ./configure: + + --disable-lzo disable LZO compression support [default=yes] + --enable-lzo-stub don't compile LZO compression support but still + allow limited interoperability with LZO-enabled + peers [default=no] + --disable-crypto disable crypto support [default=yes] + --disable-ssl disable SSL support for TLS-based key exchange + [default=yes] + --enable-x509-alt-username + enable the --x509-username-field feature + [default=no] + --disable-multi disable client/server support (--mode server + + client mode) [default=yes] + --disable-server disable server support only (but retain client + support) [default=yes] + --disable-plugins disable plug-in support [default=yes] + --disable-management disable management server support [default=yes] + --enable-pkcs11 enable pkcs11 support [default=no] + --disable-socks disable Socks support [default=yes] + --disable-http-proxy disable HTTP proxy support [default=yes] + --disable-fragment disable internal fragmentation support (--fragment) + [default=yes] + --disable-multihome disable multi-homed UDP server support (--multihome) + [default=yes] + --disable-port-share disable TCP server port-share support (--port-share) + [default=yes] + --disable-debug disable debugging support (disable gremlin and verb + 7+ messages) [default=yes] + --enable-small enable smaller executable size (disable OCC, usage + message, and verb 4 parm list) [default=yes] + --enable-password-save allow --askpass and --auth-user-pass passwords to be + read from a file [default=yes] + --enable-iproute2 enable support for iproute2 [default=no] + --disable-def-auth disable deferred authentication [default=yes] + --disable-pf disable internal packet filter [default=yes] + --enable-strict enable strict compiler warnings (debugging option) + [default=no] + --enable-pedantic enable pedantic compiler warnings, will not generate + a working executable (debugging option) [default=no] + --enable-strict-options enable strict options check between peers (debugging + option) [default=no] + --enable-selinux enable SELinux support [default=no] + --enable-systemd enable systemd suppport [default=no] + +ENVIRONMENT for ./configure: + + IFCONFIG full path to ipconfig utility + ROUTE full path to route utility + IPROUTE full path to ip utility + NETSTAT path to netstat utility + MAN2HTML path to man2html utility + GIT path to git utility + TAP_CFLAGS C compiler flags for tap + OPENSSL_CRYPTO_CFLAGS + C compiler flags for OPENSSL_CRYPTO, overriding pkg-config + OPENSSL_CRYPTO_LIBS + linker flags for OPENSSL_CRYPTO, overriding pkg-config + OPENSSL_SSL_CFLAGS + C compiler flags for OPENSSL_SSL, overriding pkg-config + OPENSSL_SSL_LIBS + linker flags for OPENSSL_SSL, overriding pkg-config + POLARSSL_CFLAGS + C compiler flags for polarssl + POLARSSL_LIBS + linker flags for polarssl + LZO_CFLAGS C compiler flags for lzo + LZO_LIBS linker flags for lzo + PKCS11_HELPER_CFLAGS + C compiler flags for PKCS11_HELPER, overriding pkg-config + PKCS11_HELPER_LIBS + linker flags for PKCS11_HELPER, overriding pkg-config + +************************************************************************* + +BUILDING ON LINUX 2.6+ FROM RPM + +You can build a binary RPM directly from the OpenVPN tarball file: + + rpmbuild -tb [tarball] + +This command will build a binary RPM file and place it in the system +RPM directory. You can then install the RPM with the standard RPM +install command: + + rpm -ivh [binary-rpm] + +When you install the binary RPM, it will install +sample-scripts/openvpn.init, which can be used to +automatically start or stop one or more OpenVPN tunnels on system +startup or shutdown, based on OpenVPN .conf files in /etc/openvpn. +See the comments in openvpn.init for more information. + +Installing the RPM will also configure the TUN/TAP device node +for linux 2.6. + +Note that the current openvpn.spec file, which instructs the rpm tool +how to build a package, will build OpenVPN with all options enabled, +including OpenSSL, LZO, and pthread linkage. Therefore all of +these packages will need to be present prior to the RPM build, unless +you edit the openvpn.spec file. + +************************************************************************* + +TUN/TAP Driver Configuration: + +* Linux 2.6 or higher (with integrated TUN/TAP driver): + + (1) load driver: modprobe tun + (2) enable routing: echo 1 > /proc/sys/net/ipv4/ip_forward + + Note that (1) needs to be done once per reboot. If you install from RPM (see + above) and use the openvpn.init script, these steps are taken care of for you. + +* FreeBSD: + + FreeBSD ships with the TUN/TAP driver, and the device nodes for tap0, + tap1, tap2, tap3, tun0, tun1, tun2 and tun3 are made by default. + However, only the TUN driver is linked into the GENERIC kernel. + + To load the TAP driver, enter: + + kldload if_tap + + See man rc(8) to find out how you can do this at boot time. + + The easiest way is to install OpenVPN from the FreeBSD ports system, + the port includes a sample script to automatically load the TAP driver + at boot-up time. + +* OpenBSD: + + OpenBSD has dynamically created tun* devices so you only need + to create an empty /etc/hostname.tun0 (tun1, tun2 and so on) for each tun + you plan to use to create the device(s) at boot. + +* Solaris: + + You need a TUN/TAP kernel driver for OpenVPN to work: + + http://www.whiteboard.ne.jp/~admin2/tuntap/ + +* Windows XP/2003/Vista/7: + + OpenVPN on Windows needs a TUN/TAP kernel driver to work. OpenVPN installers + include this driver, so installing it separately is not usually required. + The driver source code is available here: + + https://github.com/OpenVPN/tap-windows + +************************************************************************* + +CAVEATS & BUGS: + +* I have noticed cases where TCP sessions tunneled over the Linux + TAP driver (kernel 2.4.21 and 2.4.22) stall when lower --mssfix + values are used. The TCP sessions appear to unstall and resume + normally when the remote VPN endpoint is pinged. + +* If run through a firewall using OpenBSDs packet filter PF and the + filter rules include a "scrub" directive, you may get problems talking + to Linux hosts over the tunnel, since the scrubbing will kill packets + sent from Linux hosts if they are fragmented. This is usually seen as + tunnels where small packets and pings get through but large packets + and "regular traffic" don't. To circumvent this, add "no-df" to + the scrub directive so that the packet filter will let fragments with + the "dont fragment"-flag set through anyway. + +* Mixing OFB or CFB cipher modes with static key mode is not recommended, + and is flagged as an error on OpenVPN versions 1.2.1 and greater. + If you use the --cipher option to explicitly select an OFB or CFB + cipher AND you are using static key mode, it is possible that there + could be an IV collision if the OpenVPN daemons on both sides + of the connection are started at exactly the same time, since + OpenVPN uses a timestamp combined with a sequence number as the cipher + IV for OFB and CFB modes. This is not an issue if you are + using CBC cipher mode (the default), or if you are using OFB or CFB + cipher mode with SSL/TLS authentication. |