The network is virtual, your privacy is not...

News

May 16th 2007

• Fixed some memory and resource leaks.
• Made network sockets non-blocking under Windows.

Jan 5th 2007

• Fixed a bug that caused slow network speeds on Windows.
• Fixed a bug that caused tinc unable to write packets to the tun device on OpenBSD.

Dec 18th 2006

• More flexible detection of the LZO libraries when compiling.
• Fixed a bug where broadcasts in switch and hub modes sometimes would not work anymore when part of the VPN had become disconnected from the rest.

Nov 14th 2006

• Lots of small fixes.
• Broadcast packets no longer grow in size with each hop. This should fix switch mode (again).
• Generic host-up and host-down scripts.
• Optionally dump graph in graphviz format to a file or a script.
• Support LZO 2.0 and later.

May 4th 2005

• Fix switch and hub modes.
• Optionally start scripts when a Subnet becomes (un)reachable.

Nov 11th 2004

• Show error message when failing to write a PID file.
• Ignore spaces at end of lines in config files.
• Fix handling of late packets.
• Unify BSD tun/tap device handling. This allows IPv6 on tun devices and anything on tap devices as long as the underlying OS supports it.
• Handle IPv6 on Solaris tun devices.
• Allow tinc to work properly under Windows XP SP2.
• Allow VLAN tagged Ethernet frames in switch and hub mode.
• Experimental PMTUDiscovery, TunnelServer and BlockingTCP options.

Apr 3rd 2004

Nov 8th 2003

• Fix address and hostname resolving under Windows.
• Remove warnings about non-existing scripts and unsupported address families.
• Use the event logger under Windows.
• Fix quoting of filenames and command line arguments under Windows.
• Strict checks for length incoming network packets and return values of cryptographic functions,
• Fix a bug in metadata handling that made the tinc daemon abort.

Nov 1st 2003

Sep 26th 2003

Aug 14th 2003

• Allow empty lines in config files.
• Fix handling of spaces and backslashes in filenames under native Windows.
• Allow scripts to be executed under native Windows.
• Fix compiling under OpenBSD.
• Update documentation, make it less Linux specific.

Aug 04th 2003

• Lots of small bugfixes and code cleanups.
• Throughput doubled and latency reduced.
• Added LZO compression support.
• No need to set MAC address or disable ARP anymore.
• Added support for Windows 2000 and XP, both natively and in a Cygwin environment.

Sep 29th 2002

Sep 16th 2002

• More fixes for subnets with prefixlength undivisible by 8.
• Added support for NetBSD and MacOS/X.
• Switched from undirected graphs to directed graphs to avoid certain race conditions and improve scalability.
• Generalized broadcasting and forwarding of protocol messages.
• Cleanup of source code.

Apr 25th 2002

Apr 9th 2002

• Don't do blocking read()s when getting a signal.
• Remove RSA key checking code, since it sometimes thinks perfectly good RSA keys are bad.
• Fix handling of subnets when prefixlength isn't divisible by 8.

Mar 27th 2002

• Improvement of redundant links:
  • Non-blocking connects.
  • Protocol broadcast messages can no longer go into an infinite loop.
  • Graph algorithm updated to look harder for direct connections.
• Good support for routing IPv6 packets over the VPN. Works on Linux, FreeBSD, possibly OpenBSD but not on Solaris.
• Support for tunnels over IPv6 networks. Works on all supported operating systems.
• Optional compression of UDP connections using zlib.
• Optionally let UDP connections inherit TOS field of tunneled packets.
• Optionally start scripts when certain hosts become (un)reachable.

Feb 10th 2002

• Security enhancements:
  • Added sequence number and optional message authentication code to the packets.
  • Configurable encryption cipher and digest algorithms.
• More robust handling of dis- and reconnects.
• Added a "switch" and a "hub" mode to allow bridging setups.
• Preliminary support for routing of IPv6 packets.
• Supports Linux, FreeBSD, OpenBSD and Solaris.

Dec 31st 2001

Jul 21st 2001

May 25th 2001

• New authentication protocol (better security, and faster too).
• TCPonly and IndirectData are back (but not fully tested).
• Documentation revised, it's really up to date with the released package now.
• tincd -K now stores public/private keys in PEM format, but keys of 1.0pre3 can still be used.
• Faster and more secure encryption of tunneled packets.
• Stresstested to see if it handles large VPNs with more than 100 sites (it does).

Jan 26th 2001

Jan 6th 2001

Nov 25th 2000

Nov 12th 2000

Nov 9th 2000

• The protocol has been redesigned, and although some details are still under discussion, this is secure. Care has been taken to resist most, if not all, attacks.
• Unfortunately this protocol is not compatible with earlier versions, nor are earlier versions compatible with this version. Because the older protocol has huge security flaws, we feel that not implementing backwards compatibility is justified.
• Some data about the protocol:
  • It uses public/private RSA keys for authentication (this is the actual fix for the security hole).
  • All cryptographic functions have been taken out of tinc, instead it uses the OpenSSL library functions.
  • Offers support for multiple subnets per tinc daemon.
• New is also the support for the universal tun/tap device. This means better portability to FreeBSD and Solaris.
• tinc is tested to compile on Solaris, Linux x86, Linux alpha.
• tinc now uses the OpenSSL library for cryptographic operations. More information on getting and installing OpenSSL is in the manual. This also means that the GMP library is no longer required.
• Further, thanks to Enrique Zanardi, we have Spanish messages; Matias Carrasco provided us with a Spanish translation of the manual.

September 10th 2000

Exploit:

Workaround:

Fix:

Guus Sliepen
Ivo Timmermans

June 3rd 2000

May 31st 2000

• This version has been internationalised and a Dutch translation has been included.
• Two configuration variables have been added:
  • VpnMask - the IP network mask for the entire VPN, not just our subnet (as given by MyVirtualIP). The Redhat and Debian packages use this variable in their system startup scripts, but it is ignored by tinc.
  • Hostnames - if set to `yes', look up the names of IP addresses trying to connect to us. Default set to `no', to prevent lockups during lookups.
• The system startup scripts for Debian and Redhat use /etc/tinc/nets.boot to find out which networks need to be started during system boot.
• Fixes to prevent denial of service attacks by sending random data after connecting (and even when the connection has been established), either random garbage or just nonsensical protocol fields.
• tinc will retry to connect upon startup, does not quit if it doesn't work the first time.
• Hosts that are disconnected implicitly if we lose a connection get deleted from the internal list, to prevent hogging each other with add and delete requests when the connection is restored.

May 15th 2000

May 11th 2000

May 4th 2000

February 9th 2000

January 16th 2000