70 lines
2.8 KiB
Text
70 lines
2.8 KiB
Text
This is the README file for tinc version 1.0pre4. Installation
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instructions may be found in the INSTALL file.
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tinc is Copyright (C) 1998-2001 by:
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Ivo Timmermans <itimmermans@bigfoot.com>,
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Guus Sliepen <guus@sliepen.warande.net>,
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and others.
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For a complete list of authors see the AUTHORS file.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or (at
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your option) any later version. See the file COPYING for more details.
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Security statement
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------------------
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In august 2000, we discovered the existence of a security hole in all
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versions of tinc up to and including 1.0pre2. This had to do with the
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way we exchanged keys. Since then, we have been working on a new
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authentication scheme to make tinc as secure as possible. The current
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version uses the OpenSSL library and does authentication in much the
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same way as the SSH protocol does.
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Cryptography is a hard thing to get right. We cannot make any
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guarantees. Time, review and feedback are the only things that can
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prove the security of any cryptographic product. If you wish to review
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tinc or give us feedback, you are stronly encouraged to do so.
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Requirements
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------------
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Since 1.0pre3, we use OpenSSL for all cryptographic functions. So you
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need to install this library first; grab it from
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http://www.openssl.org/. We recommend version 0.9.5 or better. If
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this library is not installed on you system, configure will fail. The
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manual in doc/tinc.texi contains more detailed information on how to
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install this library.
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Features
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--------
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This version of tinc supports multiple virtual networks at once. To
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use this feature, you may supply a netname via the -n or --net
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options. The standard locations for the config files will then be
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/etc/tinc/<net>/. Because of this feature, tinc will send packets
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directly to their destinations, instead of to the uplink. If this
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behaviour is undesirable (for instance because of firewalls or other
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restrictions), please use an older version of tinc (I would recommend
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tinc-0.2.19).
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In order to force the kernel to accept received packets, the
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destination MAC address will be set to FE:FD:00:00:00:00 upon
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reception. The MAC address of the ethertap or tun/tap interface must
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also be set to this address. See the manual for more detailed
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information.
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tincd regenerates its encryption key pairs. It does this on the first
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activity after the keys have expired. This period is adjustable in the
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configuration file, and the default time is 3600 seconds (one hour).
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This version supports multiple subnets at once. They are also sorted
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on subnet mask size. This means that it is possible to have
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overlapping subnets on the VPN, as long as their subnet mask sizes
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differ.
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