[ViewVC] Annotation of: cvs/gvpe/NEWS

GVPE NEWS

TODO: bridge mode, finally?

        - 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.
        - switch to using RSA_generate_key_ex, which is the undocumented
          and needlessly more complicated replacement for the RSA_generate_key
          function which is now deprecated.
        - change public exponent for rsa keys from 65535 to 65537, for
          efficiency reasons.
        - nodes would sometimes declare transport endpoints valid despite
          the protocol not being configured locally.
        - core protocol version 0.1, compatible with older releases.
        - new global configuration options: chroot, chuser, chuid, chgid,
          to chroot to a specified or anonymous new root, and change user id.
        - 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 alises 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 libev 4 API.

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:	1.109
Committed:	Fri Jul 5 10:05:15 2013 UTC (10 years, 10 months ago) by root
Branch:	MAIN
Changes since 1.108:	+0 -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
5	root	1.97	- INCOMPATIBLE CHANGE: no longer enable udp protocol if no other
6			protocols are enabled - this is necessary when you have nodes with
7			completely unknown protocols, to force mediated connection requests.
8	root	1.99	- INCOMPATIBLE CHANGE: dns transport protocol bumped to version 2.
9	root	1.108	- switch to using RSA_generate_key_ex, which is the undocumented
10			and needlessly more complicated replacement for the RSA_generate_key
11			function which is now deprecated.
12			- change public exponent for rsa keys from 65535 to 65537, for
13			efficiency reasons.
14	root	1.105	- nodes would sometimes declare transport endpoints valid despite
15			the protocol not being configured locally.
16	root	1.107	- core protocol version 0.1, compatible with older releases.
17	root	1.106	- new global configuration options: chroot, chuser, chuid, chgid,
18			to chroot to a specified or anonymous new root, and change user id.
19	root	1.107	- prefer inet_aton over gethostbyname, as the latter is not guaranteed
20			to "resolve" literal ip addresses.
21	root	1.102	- configure didn't detect openssl 1.0 because SHA1_version became private
22			(patch by TANIGUCHI Takaki).
23	root	1.97	- fix a bug where nodes would tell the other side that it supports
24			the same protocols as that other side, instead of its own.
25	root	1.98	- add zlib when found, as openssl depends on it in newer versions.
26			- work around append-bugs in uclibc by using an extra seek.
27	root	1.99	- new "include" directive for the config file.
28	root	1.100	- gvpectrl no longer evaluates any "on" directives.
29	root	1.102	- icmp and rawip protocols weren't upgradable to each other.
30	root	1.99	- major, but incremental, dns transport improvements:
31			- do not simply abort in some error cases in the dns transport,
32			but try to recover.
33			- allow lowercase/uppercase alises for base-n encodings that do
34			not rely on case.
35			- use base26 instead of base22 encoding for dns syn's, and
36			base36 instead of base22 for headers (saves one byte/packet).
37			- back off far quicker in dns tunnel when idling - increases
38			latency on an idle link somewhat, but avoids hundreds of
39			needless packets.
40			- poll more aggressively when idling in dns (poll once per
41			second as opposed to once per 5 seconds).
42	root	1.104	- reduce dns send payload size to allow greater rate of ack
43			messages (should help sack and ipv6).
44	root	1.103	- allow for ip options in rawip/icmp transports, even though gvpe
45			doesn't generate them.
46	root	1.101	- upgrade to libev 4 API.
47	root	1.97
48			2.24 Sat Feb 12 05:15:48 CET 2011
49			- protocol version 0.1, compatible with older releases.
50	root	1.95	- due to a bug, when packets were lost, a connection could go into a
51	root	1.94	state where a ping/connection request from another node would be
52	root	1.96	ignored, leading to connections not being re-established.
53	pcg	1.93	- due to a bug, compression was almost always enabled.
54	pcg	1.92	- enable-max-mtu was actually enable-mtu, contrary to documentation.
55	pcg	1.90	- add nfmark support.
56	pcg	1.91	- add node-change script support.
57			- new DESTSI variable for node-xxx scripts.
58	root	1.95	- updated codingstyle a bit, declared truly static stuff as static.
59	root	1.96	- clarify compression docs.
60	pcg	1.90
61	pcg	1.89	2.22 Sun Feb 1 17:25:28 CET 2009
62	root	1.97	- protocol version 0.1, compatible with older releases.
63	pcg	1.86	- enabled icmp/tcp/http-proxy protocols by default.
64	pcg	1.85	- updated copyright in program greetings.
65	pcg	1.86	- fix some configure messages.
66	pcg	1.87	- updated to libev 3.52.
67	pcg	1.85
68	pcg	1.84	2.21 Wed Sep 3 06:56:27 CEST 2008
69	root	1.97	- protocol version 0.1, compatible with older releases.
70	pcg	1.84	- add missing ev++.h include header to tarball, which everybody
71			who tested it apparently had in their include path :(. Caught
72	pcg	1.85	by Karl Kleinpaste and Marcus Kong.
73	pcg	1.84
74	pcg	1.83	2.2 Mon Sep 1 06:28:09 CEST 2008
75	root	1.97	- protocol version 0.1, compatible with older releases.
76	pcg	1.78	but upgrade is recommended to due changed ondemand behaviour.
77			- new per-node options max-ttl and max-queue.
78	pcg	1.72	- convert from iom.C to libev, a high-performance event loop
79	pcg	1.71	(http://software.schmorp.de/pkg/libev).
80	pcg	1.73	- tcp connections were leaking in some cases.
81	pcg	1.78	- retry more aggressively (once/s) to establish a connection if
82			new packets arrive for it.
83	pcg	1.75	- save a lot of setsockopt calls when the tos doesn't change.
84	pcg	1.78	- honor disabled even on initial connect attempt.
85	pcg	1.76	- changed callback mechanism to be slightly less portable
86			but more efficient mechanism (standards-compliant c++ compilers
87			should work).
88	pcg	1.80	- increased receive window positive size, to allow for massive
89			packet loss due to occasional longer drop-outs.
90			- send RST when a positive window size violation is detected, but
91			not in other cases, to reconnect more quickly.
92	pcg	1.83	- upgraded liblzf to version 3.4.
93	pcg	1.77	- dropped -fno-exceptions due to ev++.h using it.
94	pcg	1.81	- node-up/down scripts are now run in sequence.
95			- new -q switch for gvpectrl, for when you run it often.
96	pcg	1.82	- work around the horribly inconsistent, ad-hoc, ever-changing
97			and broken texinfo syntax. YMMV. avoid texinfo.
98	pcg	1.83	- keepalive is more aggressive now, sensding ping's every 3 seconds
99			and killing the conenction after 15 seconds.
100	pcg	1.71	- bugfixes.
101
102	pcg	1.70	2.01 Thu Mar 29 19:26:04 CEST 2007
103	pcg	1.69	- protocol version 0.1, compatible with older releases.
104	pcg	1.68	- bugfix of callback.h, might have cause callback return values to
105			be corrupted on architectures like sparc before.
106	pcg	1.69	- dns transport retries more aggressively.
107	pcg	1.70	- updated documentation, improved dns transport reliability
108			and throughput.
109			- added experimental support for sha256 and sha512 digests.
110	pcg	1.67
111	pcg	1.66	2.0 Mon Dec 5 13:59:26 CET 2005
112	pcg	1.56	- protocol version 0.1, compatible with older releases.
113	pcg	1.65	- implement allow-direct, deny-direct node config statements.
114	pcg	1.59	- implemented != for sockinfo. This fixes a bug where
115			gvpe sent packets to the old ip address of another host
116			even though it had received packets from it's new address.
117	pcg	1.61	This only causes problems if you forget to -HUP your gvpe after
118	pcg	1.59	your ip address changed, which is required.
119	pcg	1.64	- sets close-on-exec flag on tcp connections. This fixes a bug
120			where child processes kept tcp connections open and caused
121			connections to fail when only one side can connect.
122			- fixed a bug in receive sequence checking that made gvpe
123			accept out-of-window packets in most cases.
124	pcg	1.61	- tighter limit for the maximum sequence # to avoid overflow
125			conditions + allow more headroom for packet reordering.
126	pcg	1.66	- replace some asserts that trapped config mismatches by
127	pcg	1.62	more useful log messages.
128	pcg	1.63	- fix spurious extra newline in some log messages.
129	pcg	1.56
130	pcg	1.55	1.9 Tue Apr 19 06:21:50 CEST 2005
131	pcg	1.56	- protocol version 0.1, compatible with older releases.
132	pcg	1.49	- WARNING: this version checks the return value of if-up etc.
133			scripts and exits on failure.
134	pcg	1.50	- IMPORTANT: run if-up/node-up etc. scripts via /bin/sh.
135			- IMPORTANT: interface initialization (MAC, MTU) is now done
136			automatically in most configurations.
137	pcg	1.54	- options can now be specified on the gvpe command line, too.
138	pcg	1.49	- make some DNS transport values configurable and document them.
139			- improved OS specific information in gvpe.osdep(5).
140	pcg	1.51	- new tap device type "native/darwin", that supports the tap
141	pcg	1.45	driver available for darwin (thanks to matthew mead who tested
142	pcg	1.47	it out with me in a long session). tincd/darwin is still available.
143	pcg	1.51	- new device type "tincd/bsd", which is a newer version of the
144			*bsd-drivers taken from tinc.
145	pcg	1.46	- fixed a bug in relying on the order of global construction
146			when tcp transport was enabled. The fix makes it use no
147			cpu time unless it is in use, too.
148	pcg	1.52	- information about other nodes is now available to if-up etc. scripts.
149			- the value of the config variable if-up-data is passed to the if-up
150			etc. scripts.
151	pcg	1.49	- skip unparsable config lines with a warning instead of stopping
152			parsing and continuing with a certainly unusable config.
153	pcg	1.43
154	pcg	1.41	1.8 Fri Mar 18 00:58:55 CET 2005
155	pcg	1.56	- protocol version 0.1, compatible with older releases.
156	pcg	1.36	- enable-udp = yes is now default only when no other protocols
157			are enabled. otherwise it is disabled unless explicitly enabled.
158	pcg	1.40	- implemented dns tunneling (experimental now and in the future).
159	pcg	1.39	- remove support for pre-release version protocol.
160	pcg	1.41	- updated tincd drivers (rev 1433), added uml_socket driver, documented
161			tincd drivers a bit better.
162	pcg	1.40	- document icmp configuration values.
163			- document transport protocols in gvpe.protocol(7).
164			- remove unused ChangeLog file.
165	pcg	1.41	- created a mailinglist at gvpe@lists.schmorp.de.
166			- added an exemption to allow distribution of binaries linked against
167			OpenSSL, as suggested by Guus Sliepen (author of tinc). No
168			GNUTLS conversion in sight.
169	pcg	1.42	- some portability fixes with respect to --disable-nls.
170	pcg	1.36
171	pcg	1.35	1.7 Tue Feb 22 23:58:59 CET 2005
172	pcg	1.32	- protocol version 0.1, compatible with older releases.
173	pcg	1.26	- first gnu release.
174	pcg	1.27	- documented the special value 1 for router-priority.
175	pcg	1.26	- renamed vped => gvpe and vpectrl => gvpectrl, as well as
176			vped.conf => gvpe.conf.
177	pcg	1.29	- new per-node option "max-retry".
178	pcg	1.22	- asymmetric rekeying behaviour, so hosts don't rekey simultaneously.
179	pcg	1.24	- new configure option --enable-static-daemon.
180	pcg	1.23	- fix configure --help output.
181	pcg	1.26	- many documentation layout fixes.
182	pcg	1.28	- synced iom.[Ch] from rxvt-unicode.
183	pcg	1.34	- try to cope with some non-monotonic time changes.
184	pcg	1.30	- revert to locale.h - a usual, clocale is nonfunctioning on macosx.
185	pcg	1.32	- considerably improved pod2texi and the resulting texi doc.
186	pcg	1.22
187	pcg	1.21	1.6.1 Wed May 12 14:48:20 CEST 2004
188	pcg	1.32	- protocol version 0.1, compatible with older releases.
189	pcg	1.22	- fix -c switch that has been broken due to a last-minute fix
190			to option and config file parsing.
191	pcg	1.21
192	pcg	1.20	1.6 Mon May 10 20:55:10 CEST 2004
193	pcg	1.22	- protocol version 0.1, compatible with older releases.
194			- do not RESET on out-of-sequence packets (good for wireless).
195			- various non-security-related bugfixes.
196			- c++ify (at least make it compile with g++-3.4, which should make
197			it a little bit more standard c++).
198	pcg	1.19
199	pcg	1.18	1.5 Fri Jan 30 00:50:04 CET 2004
200	pcg	1.22	- protocol version 0.1, compatible with older releases.
201			- vped will refuse to start when hostkey and public key do not match.
202			- updated lzf code to version 1.2.
203			- better error reporting for "unusual" conditions, like failing
204			to allocate memory, that should not normally happen and
205			will otherwise result in spurious other error messages. Also
206			adds paranoid checks in case openssl's API changes in a bad way.
207			- fix a bug where queued vpn packets were cleared to zero. while
208			this doesn't affect security, it did cause warning messages and
209			unnecessary connectivity delays.
210	pcg	1.15
211	pcg	1.13	1.4 Sat Jan 17 15:49:21 CET 2004
212	pcg	1.22	- protocol version 0.1, compatible with older releases.
213			- better retry behaviour on key mismatch.
214			- use select-based io_manager instead of poll-based one.
215			- share io manager between rxvt-unicode and vpe.
216			- sooo many *BSD workarounds because no BSD I could find is even
217			remotely POSIX-compatible.
218	pcg	1.11
219	pcg	1.10	1.2 Fri Oct 17 03:44:44 CEST 2003
220	pcg	1.22	- protocol version 0.1.
221			- tincd kernel interface code imported, more supported platforms
222			(native/linux (2.4), tincd/linux (2.2 and 2.4), tincd/freebsd,
223			native/cygwin).
224			- added primitive ethernet emulation (ipv4 only), which allows
225			the following platforms that only have tun drivers to work:
226			/* none yet tested */
227			- portability workarounds, especially for unfriendly freebsd
228			- very minor bugfixes
229			- warnings when choosing insecure ciphers/hashes
230			- reduced default hmac length to 8.
231			- cvs now contains configure, Makefile.in and other generated files.
232			- added doc/complex-example to the distribution.
233
234			1.0 distant past
235			- protocol version 0.1.
236			- tweaked various timeouts to help very slow (486) class
237			machines or nets with many hosts.
238			- tweaked rate-limiting to be more forgiving for hosts
239			connecting through routers (not a fix).
240	pcg	1.2