[ViewVC] Annotation of: cvs/gvpe/NEWS

GVPE NEWS

TODO: bridge mode, finally?
TODO: gcm mode?
TODO: replace ripemd160 as the only authentication hash.
TODO: increase rsa size.
TODO: replace transport bits by transport endpoint structs?
TODO: ecdh to avoid session replay attacks
TODO: http://incog-izick.blogspot.de/2011/08/using-openssl-aes-gcm.html
TODO: http://stackoverflow.com/questions/12153009/openssl-c-example-of-aes-gcm-using-evp-interfaces

proposed: 3 types, req, resreq, res

req (hmac1) rsa(seqno1 hmac1 aes1 seqno2 hmac2 aes2 auth) ecdh1
res (hmac1) hash(rsa-contents) ecdh2

req hmac0(*) rsa(seqno hmac0 hmac aes auth) hkdf-salt ecdh1
res hmac0(rsa-contents ecdh2)
   hmac_key = hkdf(hkdf-salt, hmac | ecdh)
   aes_key  = hkdf(hkdf-salt, aes  | ecdh)

TODO: protocol magic fixen(!!!)
TODO: "global"
TODO: verify
TODO: make sense of overhead calculation
TODO: use aes in ctr mode for IV values
        - INCOMPATIBLE CHANGE: core protocol version 1.0.
        - INCOMPATIBLE CHANGE: node sextions are now introduced
          with "node nodename", not "node = nodename".
        - while individual packets couldn't be replayed, a whole session
          could be replayed - this has been fixed by an extra key exchange.
        - in addition to rsa key exchange and authentication, the handshake now
          adds a diffie-hellman key exchange (using curve25119) for perfect
          forward secrecy. mac and cipher keys are derived using HKDF.
        - rsa key sizes are now configurable and larger (default is 3072).
          correspondingly, the minimum mtu is no longer 296 but 576.
        - fixed a potential (unverified) buffer overrun on rsa decryption.
        - gvpectrl no longer generates all missing public keys, but
          only missing private keys. private keys are also put
          into the configured location.
        - the pid-file now accepts %s as nodename as elsewhere.
        - no longer use RAND_bytes to generate session keys - you NEED
          a real source of entropy now (e.g. egd or /dev/random - see the
          openssl documentation).
        - multiple node statements for the same node are now supported
          and will be merged.
        - a new directive "global" switches back to the global section
          of the config file.
        - 12 random prefix bytes are now properly supported, leading to
          a fully random IV.
        - use aes with a random key in counter-mode to generate IVs,
          for speed reasons (generating 12 random bytes with openssl can
          take longer than encrypting and mac'ing a 1.5kb packet, and IVs
          do not need to be cryptographically strong random numbers
          (and in fact, shouldn't be)).
        - if-up scripts can now be specified with absolute paths.
          
2.25 Sat Jul 13 06:42:33 CEST 2013
        - INCOMPATIBLE CHANGE: no longer enable udp protocol if no other
          protocols are enabled - this is necessary when you have nodes with
          completely unknown protocols, to force mediated connection requests.
        - INCOMPATIBLE CHANGE: dns transport protocol bumped to version 2.
        - core protocol version 0.1, compatible with older releases.
        - switch to using RSA_generate_key_ex, which is the badly documented
          and needlessly more complicated replacement for the RSA_generate_key
          function which is now deprecated.
        - support additional hmac hashes: sha256 and sha512, usually truncated.
        - change public exponent for rsa keys from 65535 to 65537, for
          efficiency reasons - only affects new keys.
        - nodes would sometimes declare transport endpoints valid despite
          the protocol not being configured locally.
        - new global configuration options: chroot, chuser, chuid, chgid,
          to chroot to a specified or anonymous new root, and change user id.
        - new global configuration options seed_device and seed_interval,
          to configure another device than /dev/urandom for random seeds,
          and to configure a regular interval to reseed the rng.
        - prefer inet_aton over gethostbyname, as the latter is not guaranteed
          to "resolve" literal ip addresses.
        - configure didn't detect openssl 1.0 because SHA1_version became private
          (patch by TANIGUCHI Takaki).
        - fix a bug where nodes would tell the other side that it supports
          the same protocols as that other side, instead of its own.
        - add zlib when found, as openssl depends on it in newer versions.
        - work around append-bugs in uclibc by using an extra seek.
        - new "include" directive for the config file.
        - gvpectrl no longer evaluates any "on" directives.
        - icmp and rawip protocols weren't upgradable to each other.
        - major, but incremental, dns transport improvements:
           - do not simply abort in some error cases in the dns transport,
             but try to recover.
           - allow lowercase/uppercase aliases for base-n encodings that do
             not rely on case.
           - use base26 instead of base22 encoding for dns syn's, and
             base36 instead of base22 for headers (saves one byte/packet).
           - back off far quicker in dns tunnel when idling - increases
             latency on an idle link somewhat, but avoids hundreds of
             needless packets.
           - poll more aggressively when idling in dns (poll once per
             second as opposed to once per 5 seconds).
           - reduce dns send payload size to allow greater rate of ack
             messages (should help sack and ipv6).
        - allow for ip options in rawip/icmp transports, even though gvpe
          doesn't generate them.
        - upgrade to autoconf 2.69, automake 1.11.
        - upgrade to libev 4 API.
        - replace COPYING file by actual GPLv3 - files were relicensed to GPLv3
          earlier but COPYING was forgotten.

2.24 Sat Feb 12 05:15:48 CET 2011
        - protocol version 0.1, compatible with older releases.
        - due to a bug, when packets were lost, a connection could go into a
          state where a ping/connection request from another node would be
          ignored, leading to connections not being re-established.
        - due to a bug, compression was almost always enabled.
        - enable-max-mtu was actually enable-mtu, contrary to documentation.
        - add nfmark support.
        - add node-change script support.
        - new DESTSI variable for node-xxx scripts.
        - updated codingstyle a bit, declared truly static stuff as static.
        - clarify compression docs.

2.22 Sun Feb  1 17:25:28 CET 2009
        - protocol version 0.1, compatible with older releases.
        - enabled icmp/tcp/http-proxy protocols by default.
        - updated copyright in program greetings.
        - fix some configure messages.
        - updated to libev 3.52.

2.21 Wed Sep  3 06:56:27 CEST 2008
        - protocol version 0.1, compatible with older releases.
        - add missing ev++.h include header to tarball, which everybody
          who tested it apparently had in their include path :(. Caught
          by Karl Kleinpaste and Marcus Kong.

2.2  Mon Sep  1 06:28:09 CEST 2008
        - protocol version 0.1, compatible with older releases.
          but upgrade is recommended to due changed ondemand behaviour.
        - new per-node options max-ttl and max-queue.
        - convert from iom.C to libev, a high-performance event loop
          (http://software.schmorp.de/pkg/libev).
        - tcp connections were leaking in some cases.
        - retry more aggressively (once/s) to establish a connection if
          new packets arrive for it.
        - save a lot of setsockopt calls when the tos doesn't change.
        - honor disabled even on initial connect attempt.
        - changed callback mechanism to be slightly less portable
          but more efficient mechanism (standards-compliant c++ compilers
          should work).
        - increased receive window positive size, to allow for massive
          packet loss due to occasional longer drop-outs.
        - send RST when a positive window size violation is detected, but
          not in other cases, to reconnect more quickly.
        - upgraded liblzf to version 3.4.
        - dropped -fno-exceptions due to ev++.h using it.
        - node-up/down scripts are now run in sequence.
        - new -q switch for gvpectrl, for when you run it often.
        - work around the horribly inconsistent, ad-hoc, ever-changing
          and broken texinfo syntax. YMMV. avoid texinfo.
        - keepalive is more aggressive now, sensding ping's every 3 seconds
          and killing the conenction after 15 seconds.
        - bugfixes.

2.01 Thu Mar 29 19:26:04 CEST 2007
        - protocol version 0.1, compatible with older releases.
        - bugfix of callback.h, might have cause callback return values to
          be corrupted on architectures like sparc before.
        - dns transport retries more aggressively.
        - updated documentation, improved dns transport reliability
          and throughput.
        - added experimental support for sha256 and sha512 digests.

2.0 Mon Dec  5 13:59:26 CET 2005
        - protocol version 0.1, compatible with older releases.
        - implement allow-direct, deny-direct node config statements.
        - implemented != for sockinfo. This fixes a bug where
          gvpe sent packets to the old ip address of another host
          even though it had received packets from it's new address.
          This only causes problems if you forget to -HUP your gvpe after
          your ip address changed, which is *required*.
        - sets close-on-exec flag on tcp connections. This fixes a bug
          where child processes kept tcp connections open and caused
          connections to fail when only one side can connect.
        - fixed a bug in receive sequence checking that made gvpe
          accept out-of-window packets in most cases.
        - tighter limit for the maximum sequence # to avoid overflow
          conditions + allow more headroom for packet reordering.
        - replace some asserts that trapped config mismatches by
          more useful log messages.
        - fix spurious extra newline in some log messages.

1.9 Tue Apr 19 06:21:50 CEST 2005
        - protocol version 0.1, compatible with older releases.
        - WARNING: this version checks the return value of if-up etc.
          scripts and exits on failure.
        - IMPORTANT: run if-up/node-up etc. scripts via /bin/sh.
        - IMPORTANT: interface initialization (MAC, MTU) is now done
          automatically in most configurations.
        - options can now be specified on the gvpe command line, too.
        - make some DNS transport values configurable and document them.
        - improved OS specific information in gvpe.osdep(5).
        - new tap device type "native/darwin", that supports the tap
          driver available for darwin (thanks to matthew mead who tested
          it out with me in a long session). tincd/darwin is still available.
        - new device type "tincd/bsd", which is a newer version of the
          *bsd-drivers taken from tinc.
        - fixed a bug in relying on the order of global construction
          when tcp transport was enabled. The fix makes it use no
          cpu time unless it is in use, too.
        - information about other nodes is now available to if-up etc. scripts.
        - the value of the config variable if-up-data is passed to the if-up
          etc. scripts.
        - skip unparsable config lines with a warning instead of stopping
          parsing and continuing with a certainly unusable config.

1.8 Fri Mar 18 00:58:55 CET 2005
        - protocol version 0.1, compatible with older releases.
        - enable-udp = yes is now default only when no other protocols
          are enabled. otherwise it is disabled unless explicitly enabled.
        - implemented dns tunneling (experimental now and in the future).
        - remove support for pre-release version protocol.
        - updated tincd drivers (rev 1433), added uml_socket driver, documented
          tincd drivers a bit better.
        - document icmp configuration values.
        - document transport protocols in gvpe.protocol(7).
        - remove unused ChangeLog file.
        - created a mailinglist at gvpe@lists.schmorp.de.
        - added an exemption to allow distribution of binaries linked against
          OpenSSL, as suggested by Guus Sliepen (author of tinc). No
          GNUTLS conversion in sight.
        - some portability fixes with respect to --disable-nls.

1.7 Tue Feb 22 23:58:59 CET 2005
        - protocol version 0.1, compatible with older releases.
        - first gnu release.
        - documented the special value 1 for router-priority.
        - renamed vped => gvpe and vpectrl => gvpectrl, as well as
          vped.conf => gvpe.conf.
        - new per-node option "max-retry".
        - asymmetric rekeying behaviour, so hosts don't rekey simultaneously.
        - new configure option --enable-static-daemon.
        - fix configure --help output.
        - many documentation layout fixes.
        - synced iom.[Ch] from rxvt-unicode.
        - try to cope with some non-monotonic time changes.
        - revert to locale.h - a usual, clocale is nonfunctioning on macosx.
        - considerably improved pod2texi and the resulting texi doc.

1.6.1 Wed May 12 14:48:20 CEST 2004
        - protocol version 0.1, compatible with older releases.
        - fix -c switch that has been broken due to a last-minute fix
          to option and config file parsing.

1.6 Mon May 10 20:55:10 CEST 2004
        - protocol version 0.1, compatible with older releases.
        - do not RESET on out-of-sequence packets (good for wireless).
        - various non-security-related bugfixes.
        - c++ify (at least make it compile with g++-3.4, which should make
          it a little bit more standard c++).

1.5 Fri Jan 30 00:50:04 CET 2004
        - protocol version 0.1, compatible with older releases.
        - vped will refuse to start when hostkey and public key do not match.
        - updated lzf code to version 1.2.
        - better error reporting for "unusual" conditions, like failing
          to allocate memory, that should not normally happen and
          will otherwise result in spurious other error messages. Also
          adds paranoid checks in case openssl's API changes in a bad way.
        - fix a bug where queued vpn packets were cleared to zero. while
          this doesn't affect security, it did cause warning messages and
          unnecessary connectivity delays.

1.4 Sat Jan 17 15:49:21 CET 2004
        - protocol version 0.1, compatible with older releases.
        - better retry behaviour on key mismatch.
        - use select-based io_manager instead of poll-based one.
        - share io manager between rxvt-unicode and vpe.
        - sooo many *BSD workarounds because no BSD I could find is even
          remotely POSIX-compatible.

1.2 Fri Oct 17 03:44:44 CEST 2003
        - protocol version 0.1.
        - tincd kernel interface code imported, more supported platforms
          (native/linux (2.4), tincd/linux (2.2 and 2.4), tincd/freebsd,
          native/cygwin).
        - added primitive ethernet emulation (ipv4 only), which allows
          the following platforms that only have tun drivers to work:
          /* none yet tested */
        - portability workarounds, especially for unfriendly freebsd
        - very minor bugfixes
        - warnings when choosing insecure ciphers/hashes
        - reduced default hmac length to 8.
        - cvs now contains configure, Makefile.in and other generated files.
        - added doc/complex-example to the distribution.

1.0 distant past
        - protocol version 0.1.
        - tweaked various timeouts to help very slow (486) class
          machines or nets with many hosts.
        - tweaked rate-limiting to be more forgiving for hosts
          connecting through routers (not a fix).

Revision:	1.116
Committed:	Thu Jul 18 13:35:19 2013 UTC (10 years, 9 months ago) by root
Branch:	MAIN
Changes since 1.115:	+22 -5 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	pcg	1.83	GVPE NEWS
2	pcg	1.57
3	root	1.106	TODO: bridge mode, finally?
4	root	1.112	TODO: gcm mode?
5			TODO: replace ripemd160 as the only authentication hash.
6			TODO: increase rsa size.
7	root	1.114	TODO: replace transport bits by transport endpoint structs?
8			TODO: ecdh to avoid session replay attacks
9			TODO: http://incog-izick.blogspot.de/2011/08/using-openssl-aes-gcm.html
10			TODO: http://stackoverflow.com/questions/12153009/openssl-c-example-of-aes-gcm-using-evp-interfaces
11
12			proposed: 3 types, req, resreq, res
13
14			req (hmac1) rsa(seqno1 hmac1 aes1 seqno2 hmac2 aes2 auth) ecdh1
15			res (hmac1) hash(rsa-contents) ecdh2
16
17			req hmac0(*) rsa(seqno hmac0 hmac aes auth) hkdf-salt ecdh1
18			res hmac0(rsa-contents ecdh2)
19			hmac_key = hkdf(hkdf-salt, hmac \| ecdh)
20			aes_key = hkdf(hkdf-salt, aes \| ecdh)
21
22	root	1.116	TODO: protocol magic fixen(!!!)
23			TODO: "global"
24			TODO: verify
25			TODO: make sense of overhead calculation
26			TODO: use aes in ctr mode for IV values
27	root	1.114	- INCOMPATIBLE CHANGE: core protocol version 1.0.
28	root	1.116	- INCOMPATIBLE CHANGE: node sextions are now introduced
29			with "node nodename", not "node = nodename".
30	root	1.114	- while individual packets couldn't be replayed, a whole session
31			could be replayed - this has been fixed by an extra key exchange.
32			- in addition to rsa key exchange and authentication, the handshake now
33			adds a diffie-hellman key exchange (using curve25119) for perfect
34			forward secrecy. mac and cipher keys are derived using HKDF.
35			- rsa key sizes are now configurable and larger (default is 3072).
36			correspondingly, the minimum mtu is no longer 296 but 576.
37			- fixed a potential (unverified) buffer overrun on rsa decryption.
38			- gvpectrl no longer generates all missing public keys, but
39			only missing private keys. private keys are also put
40			into the configured location.
41			- the pid-file now accepts %s as nodename as elsewhere.
42	root	1.115	- no longer use RAND_bytes to generate session keys - you NEED
43			a real source of entropy now (e.g. egd or /dev/random - see the
44			openssl documentation).
45	root	1.116	- multiple node statements for the same node are now supported
46			and will be merged.
47			- a new directive "global" switches back to the global section
48			of the config file.
49			- 12 random prefix bytes are now properly supported, leading to
50			a fully random IV.
51			- use aes with a random key in counter-mode to generate IVs,
52			for speed reasons (generating 12 random bytes with openssl can
53			take longer than encrypting and mac'ing a 1.5kb packet, and IVs
54			do not need to be cryptographically strong random numbers
55			(and in fact, shouldn't be)).
56			- if-up scripts can now be specified with absolute paths.
57
58	root	1.114	2.25 Sat Jul 13 06:42:33 CEST 2013
59	root	1.97	- INCOMPATIBLE CHANGE: no longer enable udp protocol if no other
60			protocols are enabled - this is necessary when you have nodes with
61			completely unknown protocols, to force mediated connection requests.
62	root	1.99	- INCOMPATIBLE CHANGE: dns transport protocol bumped to version 2.
63	root	1.112	- core protocol version 0.1, compatible with older releases.
64	root	1.110	- switch to using RSA_generate_key_ex, which is the badly documented
65	root	1.108	and needlessly more complicated replacement for the RSA_generate_key
66			function which is now deprecated.
67	root	1.112	- support additional hmac hashes: sha256 and sha512, usually truncated.
68	root	1.108	- change public exponent for rsa keys from 65535 to 65537, for
69	root	1.110	efficiency reasons - only affects new keys.
70	root	1.105	- nodes would sometimes declare transport endpoints valid despite
71			the protocol not being configured locally.
72	root	1.106	- new global configuration options: chroot, chuser, chuid, chgid,
73			to chroot to a specified or anonymous new root, and change user id.
74	root	1.112	- new global configuration options seed_device and seed_interval,
75			to configure another device than /dev/urandom for random seeds,
76	root	1.116	and to configure a regular interval to reseed the rng.
77	root	1.107	- prefer inet_aton over gethostbyname, as the latter is not guaranteed
78			to "resolve" literal ip addresses.
79	root	1.102	- configure didn't detect openssl 1.0 because SHA1_version became private
80			(patch by TANIGUCHI Takaki).
81	root	1.97	- fix a bug where nodes would tell the other side that it supports
82			the same protocols as that other side, instead of its own.
83	root	1.98	- add zlib when found, as openssl depends on it in newer versions.
84			- work around append-bugs in uclibc by using an extra seek.
85	root	1.99	- new "include" directive for the config file.
86	root	1.100	- gvpectrl no longer evaluates any "on" directives.
87	root	1.102	- icmp and rawip protocols weren't upgradable to each other.
88	root	1.99	- major, but incremental, dns transport improvements:
89			- do not simply abort in some error cases in the dns transport,
90			but try to recover.
91	root	1.116	- allow lowercase/uppercase aliases for base-n encodings that do
92	root	1.99	not rely on case.
93			- use base26 instead of base22 encoding for dns syn's, and
94			base36 instead of base22 for headers (saves one byte/packet).
95			- back off far quicker in dns tunnel when idling - increases
96			latency on an idle link somewhat, but avoids hundreds of
97			needless packets.
98			- poll more aggressively when idling in dns (poll once per
99			second as opposed to once per 5 seconds).
100	root	1.104	- reduce dns send payload size to allow greater rate of ack
101			messages (should help sack and ipv6).
102	root	1.103	- allow for ip options in rawip/icmp transports, even though gvpe
103			doesn't generate them.
104	root	1.113	- upgrade to autoconf 2.69, automake 1.11.
105	root	1.101	- upgrade to libev 4 API.
106	root	1.113	- replace COPYING file by actual GPLv3 - files were relicensed to GPLv3
107			earlier but COPYING was forgotten.
108	root	1.97
109			2.24 Sat Feb 12 05:15:48 CET 2011
110			- protocol version 0.1, compatible with older releases.
111	root	1.95	- due to a bug, when packets were lost, a connection could go into a
112	root	1.94	state where a ping/connection request from another node would be
113	root	1.96	ignored, leading to connections not being re-established.
114	pcg	1.93	- due to a bug, compression was almost always enabled.
115	pcg	1.92	- enable-max-mtu was actually enable-mtu, contrary to documentation.
116	pcg	1.90	- add nfmark support.
117	pcg	1.91	- add node-change script support.
118			- new DESTSI variable for node-xxx scripts.
119	root	1.95	- updated codingstyle a bit, declared truly static stuff as static.
120	root	1.96	- clarify compression docs.
121	pcg	1.90
122	pcg	1.89	2.22 Sun Feb 1 17:25:28 CET 2009
123	root	1.97	- protocol version 0.1, compatible with older releases.
124	pcg	1.86	- enabled icmp/tcp/http-proxy protocols by default.
125	pcg	1.85	- updated copyright in program greetings.
126	pcg	1.86	- fix some configure messages.
127	pcg	1.87	- updated to libev 3.52.
128	pcg	1.85
129	pcg	1.84	2.21 Wed Sep 3 06:56:27 CEST 2008
130	root	1.97	- protocol version 0.1, compatible with older releases.
131	pcg	1.84	- add missing ev++.h include header to tarball, which everybody
132			who tested it apparently had in their include path :(. Caught
133	pcg	1.85	by Karl Kleinpaste and Marcus Kong.
134	pcg	1.84
135	pcg	1.83	2.2 Mon Sep 1 06:28:09 CEST 2008
136	root	1.97	- protocol version 0.1, compatible with older releases.
137	pcg	1.78	but upgrade is recommended to due changed ondemand behaviour.
138			- new per-node options max-ttl and max-queue.
139	pcg	1.72	- convert from iom.C to libev, a high-performance event loop
140	pcg	1.71	(http://software.schmorp.de/pkg/libev).
141	pcg	1.73	- tcp connections were leaking in some cases.
142	pcg	1.78	- retry more aggressively (once/s) to establish a connection if
143			new packets arrive for it.
144	pcg	1.75	- save a lot of setsockopt calls when the tos doesn't change.
145	pcg	1.78	- honor disabled even on initial connect attempt.
146	pcg	1.76	- changed callback mechanism to be slightly less portable
147			but more efficient mechanism (standards-compliant c++ compilers
148			should work).
149	pcg	1.80	- increased receive window positive size, to allow for massive
150			packet loss due to occasional longer drop-outs.
151			- send RST when a positive window size violation is detected, but
152			not in other cases, to reconnect more quickly.
153	pcg	1.83	- upgraded liblzf to version 3.4.
154	pcg	1.77	- dropped -fno-exceptions due to ev++.h using it.
155	pcg	1.81	- node-up/down scripts are now run in sequence.
156			- new -q switch for gvpectrl, for when you run it often.
157	pcg	1.82	- work around the horribly inconsistent, ad-hoc, ever-changing
158			and broken texinfo syntax. YMMV. avoid texinfo.
159	pcg	1.83	- keepalive is more aggressive now, sensding ping's every 3 seconds
160			and killing the conenction after 15 seconds.
161	pcg	1.71	- bugfixes.
162
163	pcg	1.70	2.01 Thu Mar 29 19:26:04 CEST 2007
164	pcg	1.69	- protocol version 0.1, compatible with older releases.
165	pcg	1.68	- bugfix of callback.h, might have cause callback return values to
166			be corrupted on architectures like sparc before.
167	pcg	1.69	- dns transport retries more aggressively.
168	pcg	1.70	- updated documentation, improved dns transport reliability
169			and throughput.
170			- added experimental support for sha256 and sha512 digests.
171	pcg	1.67
172	pcg	1.66	2.0 Mon Dec 5 13:59:26 CET 2005
173	pcg	1.56	- protocol version 0.1, compatible with older releases.
174	pcg	1.65	- implement allow-direct, deny-direct node config statements.
175	pcg	1.59	- implemented != for sockinfo. This fixes a bug where
176			gvpe sent packets to the old ip address of another host
177			even though it had received packets from it's new address.
178	pcg	1.61	This only causes problems if you forget to -HUP your gvpe after
179	pcg	1.59	your ip address changed, which is required.
180	pcg	1.64	- sets close-on-exec flag on tcp connections. This fixes a bug
181			where child processes kept tcp connections open and caused
182			connections to fail when only one side can connect.
183			- fixed a bug in receive sequence checking that made gvpe
184			accept out-of-window packets in most cases.
185	pcg	1.61	- tighter limit for the maximum sequence # to avoid overflow
186			conditions + allow more headroom for packet reordering.
187	pcg	1.66	- replace some asserts that trapped config mismatches by
188	pcg	1.62	more useful log messages.
189	pcg	1.63	- fix spurious extra newline in some log messages.
190	pcg	1.56
191	pcg	1.55	1.9 Tue Apr 19 06:21:50 CEST 2005
192	pcg	1.56	- protocol version 0.1, compatible with older releases.
193	pcg	1.49	- WARNING: this version checks the return value of if-up etc.
194			scripts and exits on failure.
195	pcg	1.50	- IMPORTANT: run if-up/node-up etc. scripts via /bin/sh.
196			- IMPORTANT: interface initialization (MAC, MTU) is now done
197			automatically in most configurations.
198	pcg	1.54	- options can now be specified on the gvpe command line, too.
199	pcg	1.49	- make some DNS transport values configurable and document them.
200			- improved OS specific information in gvpe.osdep(5).
201	pcg	1.51	- new tap device type "native/darwin", that supports the tap
202	pcg	1.45	driver available for darwin (thanks to matthew mead who tested
203	pcg	1.47	it out with me in a long session). tincd/darwin is still available.
204	pcg	1.51	- new device type "tincd/bsd", which is a newer version of the
205			*bsd-drivers taken from tinc.
206	pcg	1.46	- fixed a bug in relying on the order of global construction
207			when tcp transport was enabled. The fix makes it use no
208			cpu time unless it is in use, too.
209	pcg	1.52	- information about other nodes is now available to if-up etc. scripts.
210			- the value of the config variable if-up-data is passed to the if-up
211			etc. scripts.
212	pcg	1.49	- skip unparsable config lines with a warning instead of stopping
213			parsing and continuing with a certainly unusable config.
214	pcg	1.43
215	pcg	1.41	1.8 Fri Mar 18 00:58:55 CET 2005
216	pcg	1.56	- protocol version 0.1, compatible with older releases.
217	pcg	1.36	- enable-udp = yes is now default only when no other protocols
218			are enabled. otherwise it is disabled unless explicitly enabled.
219	pcg	1.40	- implemented dns tunneling (experimental now and in the future).
220	pcg	1.39	- remove support for pre-release version protocol.
221	pcg	1.41	- updated tincd drivers (rev 1433), added uml_socket driver, documented
222			tincd drivers a bit better.
223	pcg	1.40	- document icmp configuration values.
224			- document transport protocols in gvpe.protocol(7).
225			- remove unused ChangeLog file.
226	pcg	1.41	- created a mailinglist at gvpe@lists.schmorp.de.
227			- added an exemption to allow distribution of binaries linked against
228			OpenSSL, as suggested by Guus Sliepen (author of tinc). No
229			GNUTLS conversion in sight.
230	pcg	1.42	- some portability fixes with respect to --disable-nls.
231	pcg	1.36
232	pcg	1.35	1.7 Tue Feb 22 23:58:59 CET 2005
233	pcg	1.32	- protocol version 0.1, compatible with older releases.
234	pcg	1.26	- first gnu release.
235	pcg	1.27	- documented the special value 1 for router-priority.
236	pcg	1.26	- renamed vped => gvpe and vpectrl => gvpectrl, as well as
237			vped.conf => gvpe.conf.
238	pcg	1.29	- new per-node option "max-retry".
239	pcg	1.22	- asymmetric rekeying behaviour, so hosts don't rekey simultaneously.
240	pcg	1.24	- new configure option --enable-static-daemon.
241	pcg	1.23	- fix configure --help output.
242	pcg	1.26	- many documentation layout fixes.
243	pcg	1.28	- synced iom.[Ch] from rxvt-unicode.
244	pcg	1.34	- try to cope with some non-monotonic time changes.
245	pcg	1.30	- revert to locale.h - a usual, clocale is nonfunctioning on macosx.
246	pcg	1.32	- considerably improved pod2texi and the resulting texi doc.
247	pcg	1.22
248	pcg	1.21	1.6.1 Wed May 12 14:48:20 CEST 2004
249	pcg	1.32	- protocol version 0.1, compatible with older releases.
250	pcg	1.22	- fix -c switch that has been broken due to a last-minute fix
251			to option and config file parsing.
252	pcg	1.21
253	pcg	1.20	1.6 Mon May 10 20:55:10 CEST 2004
254	pcg	1.22	- protocol version 0.1, compatible with older releases.
255			- do not RESET on out-of-sequence packets (good for wireless).
256			- various non-security-related bugfixes.
257			- c++ify (at least make it compile with g++-3.4, which should make
258			it a little bit more standard c++).
259	pcg	1.19
260	pcg	1.18	1.5 Fri Jan 30 00:50:04 CET 2004
261	pcg	1.22	- protocol version 0.1, compatible with older releases.
262			- vped will refuse to start when hostkey and public key do not match.
263			- updated lzf code to version 1.2.
264			- better error reporting for "unusual" conditions, like failing
265			to allocate memory, that should not normally happen and
266			will otherwise result in spurious other error messages. Also
267			adds paranoid checks in case openssl's API changes in a bad way.
268			- fix a bug where queued vpn packets were cleared to zero. while
269			this doesn't affect security, it did cause warning messages and
270			unnecessary connectivity delays.
271	pcg	1.15
272	pcg	1.13	1.4 Sat Jan 17 15:49:21 CET 2004
273	pcg	1.22	- protocol version 0.1, compatible with older releases.
274			- better retry behaviour on key mismatch.
275			- use select-based io_manager instead of poll-based one.
276			- share io manager between rxvt-unicode and vpe.
277			- sooo many *BSD workarounds because no BSD I could find is even
278			remotely POSIX-compatible.
279	pcg	1.11
280	pcg	1.10	1.2 Fri Oct 17 03:44:44 CEST 2003
281	pcg	1.22	- protocol version 0.1.
282			- tincd kernel interface code imported, more supported platforms
283			(native/linux (2.4), tincd/linux (2.2 and 2.4), tincd/freebsd,
284			native/cygwin).
285			- added primitive ethernet emulation (ipv4 only), which allows
286			the following platforms that only have tun drivers to work:
287			/* none yet tested */
288			- portability workarounds, especially for unfriendly freebsd
289			- very minor bugfixes
290			- warnings when choosing insecure ciphers/hashes
291			- reduced default hmac length to 8.
292			- cvs now contains configure, Makefile.in and other generated files.
293			- added doc/complex-example to the distribution.
294
295			1.0 distant past
296			- protocol version 0.1.
297			- tweaked various timeouts to help very slow (486) class
298			machines or nets with many hosts.
299			- tweaked rate-limiting to be more forgiving for hosts
300			connecting through routers (not a fix).
301	pcg	1.2