- Update.
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Guus Sliepen
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7
NEWS
7
NEWS
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version 1.0pre3 Oct 31 2000
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* Major overhaul
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* Use public/private key cryptography (fixes security hole)
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* Use OpenSSL crypto library for all cryptography
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* Support for multiple subnets per tinc daemon
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* Support for tun/tap device
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version 1.0pre2 May 31 2000
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version 1.0pre2 May 31 2000
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* Internationalized, Dutch translation available
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* Internationalized, Dutch translation available
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* Many sanity checks on the meta protocol added
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* Many sanity checks on the meta protocol added
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79
README
79
README
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This is the README file for tinc version 1.0.
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This is the README file for tinc version 1.0pre3. Installation instructions may
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Installation instructions may be found in the INSTALL file.
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be found in the INSTALL file.
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tinc is Copyright (C) 1998,1999,2000 Ivo Timmermans
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tinc is Copyright (C) 1998,1999,2000 Ivo Timmermans <itimmermans@bigfoot.com>,
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<itimmermans@bigfoot.com>, Guus Sliepen <guus@sliepen.warande.net> and
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Guus Sliepen <guus@sliepen.warande.net> and others. For a complete list of
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others. For a complete list of authors see the AUTHORS file.
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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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This program is free software; you can redistribute it and/or modify it under
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it under the terms of the GNU General Public License as published by
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the terms of the GNU General Public License as published by the Free Software
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the Free Software Foundation; either version 2 of the License, or (at
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Foundation; either version 2 of the License, or (at your option) any later
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your option) any later version. See the file COPYING for more details.
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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 versions
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of tinc up to and including 1.0pre2. This had to do with the way we exchanged
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keys. Since then, we have been working on a new authentication scheme to make
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tinc as secure as possible. The current version uses the OpenSSL library and
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does authentication in much the same way as the SSH protocol does.
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Cryptography is a hard thing to get right. We cannot make any guarantees. Time,
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review and feedback are the only things that can prove the security of any
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cryptographic product. If you wish to review tinc or give us feedback, you are
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stronly encouraged to do so.
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Requirements
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Requirements
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------------
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------------
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Since 1.0pre3, we use OpenSSL for all cryptographic functions. So you
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Since 1.0pre3, we use OpenSSL for all cryptographic functions. So you need to
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need to install this library first; grab it from
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install this library first; grab it from http://www.openssl.org/. We recommend
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http://www.openssl.org/. We recommend version 0.9.5 or better. If
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version 0.9.5 or better. If this library is not installed on you system,
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this library is not installed on you system, configure will fail. The
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configure will fail. The manual in doc/tinc.texi contains more detailed
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manual in doc/tinc.texi contains more detailed information on how to
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information on how to install this library.
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install this library.
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Features
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Features
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--------
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--------
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This version of tinc supports multiple virtual networks at once. To
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This version of tinc supports multiple virtual networks at once. To use this
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use this feature, you may supply a netname via the -n or --net
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feature, you may supply a netname via the -n or --net options. The standard
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options. The standard locations for the config files will then be
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locations for the config files will then be /etc/tinc/<net>/. Because of this
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/etc/tinc/<net>/. Because of this feature, tinc will send packets
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feature, tinc will send packets directly to their destinations, instead of to
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directly to their destinations, instead of to the uplink. If this
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the uplink. If this behaviour is undesirable (for instance because of firewalls
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behaviour is undesirable (for instance because of firewalls or
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or other restrictions), please use an older version of tinc (I would recommend
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other restrictions), please use an older version of tinc (I would
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tinc-0.2.19).
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recommend tinc-0.2.19).
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In this version, MAC addresses are stripped off before encoding and
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In order to force the kernel to accept received packets, the destination MAC
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sending a packet. When the packet reaches its destination, the MAC
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address will be set to FE:FD:00:00:00:00 upon reception. The MAC address of the
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addresses are rebuilt again. They then have the form
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ethertap or tun/tap interface must also be set to this address. See the manual
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FE:FD:aa:bb:cc:dd. aa, bb, cc and dd are taken from the destination
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for more detailed information.
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and source IP address. See the manual for more detailed information.
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tincd regenerates its encryption key pairs. It does this on the first
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tincd regenerates its encryption key pairs. It does this on the first activity
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activity after the keys have expired. This period is adjustable in the
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after the keys have expired. This period is adjustable in the configuration
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configuration file, and the default time is 3600 seconds (one
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file, and the default time is 3600 seconds (one hour).
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hour). If you send a USR2 signal to the daemon, it'll regenerate
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immediately.
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This version supports multiple subnets at once. They are also sorted on subnet
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mask size. This means that it is possible to have overlapping subnets on the
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VPN, as long as their subnet mask sizes differ.
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25
TODO
25
TODO
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Things left to do to make cabal superstable:
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Todo list (in no specific order):
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--------------------------------------------
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* Check for connection loops. Inter-daemon
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* Compression
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connections should always satisfy the
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* Routing by MAC (allows for more than only IPv4)
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tree property.
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* Store private key in a separate file
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* Redundancy: multiple ConnectTo lines, if
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* Sanity checks on configuration directory
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one fails others might be tried.
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* Use efficient tree algorithms instead of linked lists
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* Allow connects to hosts that use
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* Reenable queues for delayed packets
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nodirectdata.
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* Broadcast/multicast
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* Windowing, chaffing, scattering, background noise
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* ABC protocol (superscalabilty)
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* Proxy ARP
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* Eazy setup scripts (graphical?)
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* FreeBSD and Solaris ports
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* Threading
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* Everything else not mentioned.
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