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 |
|
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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 |
|
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TODO: http://incog-izick.blogspot.de/2011/08/using-openssl-aes-gcm.html |
10 |
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TODO: http://stackoverflow.com/questions/12153009/openssl-c-example-of-aes-gcm-using-evp-interfaces |
11 |
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12 |
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proposed: 3 types, req, resreq, res |
13 |
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|
14 |
|
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req (hmac1) rsa(seqno1 hmac1 aes1 seqno2 hmac2 aes2 auth) ecdh1 |
15 |
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res (hmac1) hash(rsa-contents) ecdh2 |
16 |
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17 |
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req hmac0(*) rsa(seqno hmac0 hmac aes auth) hkdf-salt ecdh1 |
18 |
|
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res hmac0(rsa-contents ecdh2) |
19 |
|
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hmac_key = hkdf(hkdf-salt, hmac | ecdh) |
20 |
|
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aes_key = hkdf(hkdf-salt, aes | ecdh) |
21 |
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22 |
root |
1.116 |
TODO: protocol magic fixen(!!!) |
23 |
|
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TODO: "global" |
24 |
|
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TODO: verify |
25 |
|
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TODO: make sense of overhead calculation |
26 |
root |
1.117 |
TODO: if-up &c should not be scripts? |
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 |
|
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- rsa key sizes are now configurable and larger (default is 3072). |
36 |
|
|
correspondingly, the minimum mtu is no longer 296 but 576. |
37 |
|
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- 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 |
|
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- 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 |
|
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- a new directive "global" switches back to the global section |
48 |
|
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of the config file. |
49 |
|
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- 12 random prefix bytes are now properly supported, leading to |
50 |
|
|
a fully random IV. |
51 |
|
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- 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 |
|
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do not need to be cryptographically strong random numbers |
55 |
|
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(and in fact, shouldn't be)). |
56 |
|
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- if-up scripts can now be specified with absolute paths. |
57 |
root |
1.117 |
- new global option: serial, to detect configuration mismatches. |
58 |
root |
1.116 |
|
59 |
root |
1.114 |
2.25 Sat Jul 13 06:42:33 CEST 2013 |
60 |
root |
1.97 |
- INCOMPATIBLE CHANGE: no longer enable udp protocol if no other |
61 |
|
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protocols are enabled - this is necessary when you have nodes with |
62 |
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completely unknown protocols, to force mediated connection requests. |
63 |
root |
1.99 |
- INCOMPATIBLE CHANGE: dns transport protocol bumped to version 2. |
64 |
root |
1.112 |
- core protocol version 0.1, compatible with older releases. |
65 |
root |
1.110 |
- switch to using RSA_generate_key_ex, which is the badly documented |
66 |
root |
1.108 |
and needlessly more complicated replacement for the RSA_generate_key |
67 |
|
|
function which is now deprecated. |
68 |
root |
1.112 |
- support additional hmac hashes: sha256 and sha512, usually truncated. |
69 |
root |
1.108 |
- change public exponent for rsa keys from 65535 to 65537, for |
70 |
root |
1.110 |
efficiency reasons - only affects new keys. |
71 |
root |
1.105 |
- nodes would sometimes declare transport endpoints valid despite |
72 |
|
|
the protocol not being configured locally. |
73 |
root |
1.106 |
- new global configuration options: chroot, chuser, chuid, chgid, |
74 |
|
|
to chroot to a specified or anonymous new root, and change user id. |
75 |
root |
1.112 |
- new global configuration options seed_device and seed_interval, |
76 |
|
|
to configure another device than /dev/urandom for random seeds, |
77 |
root |
1.116 |
and to configure a regular interval to reseed the rng. |
78 |
root |
1.107 |
- prefer inet_aton over gethostbyname, as the latter is not guaranteed |
79 |
|
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to "resolve" literal ip addresses. |
80 |
root |
1.102 |
- configure didn't detect openssl 1.0 because SHA1_version became private |
81 |
|
|
(patch by TANIGUCHI Takaki). |
82 |
root |
1.97 |
- fix a bug where nodes would tell the other side that it supports |
83 |
|
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the same protocols as that other side, instead of its own. |
84 |
root |
1.98 |
- add zlib when found, as openssl depends on it in newer versions. |
85 |
|
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- work around append-bugs in uclibc by using an extra seek. |
86 |
root |
1.99 |
- new "include" directive for the config file. |
87 |
root |
1.100 |
- gvpectrl no longer evaluates any "on" directives. |
88 |
root |
1.102 |
- icmp and rawip protocols weren't upgradable to each other. |
89 |
root |
1.99 |
- major, but incremental, dns transport improvements: |
90 |
|
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- do not simply abort in some error cases in the dns transport, |
91 |
|
|
but try to recover. |
92 |
root |
1.116 |
- allow lowercase/uppercase aliases for base-n encodings that do |
93 |
root |
1.99 |
not rely on case. |
94 |
|
|
- use base26 instead of base22 encoding for dns syn's, and |
95 |
|
|
base36 instead of base22 for headers (saves one byte/packet). |
96 |
|
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- back off far quicker in dns tunnel when idling - increases |
97 |
|
|
latency on an idle link somewhat, but avoids hundreds of |
98 |
|
|
needless packets. |
99 |
|
|
- poll more aggressively when idling in dns (poll once per |
100 |
|
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second as opposed to once per 5 seconds). |
101 |
root |
1.104 |
- reduce dns send payload size to allow greater rate of ack |
102 |
|
|
messages (should help sack and ipv6). |
103 |
root |
1.103 |
- allow for ip options in rawip/icmp transports, even though gvpe |
104 |
|
|
doesn't generate them. |
105 |
root |
1.113 |
- upgrade to autoconf 2.69, automake 1.11. |
106 |
root |
1.101 |
- upgrade to libev 4 API. |
107 |
root |
1.113 |
- replace COPYING file by actual GPLv3 - files were relicensed to GPLv3 |
108 |
|
|
earlier but COPYING was forgotten. |
109 |
root |
1.97 |
|
110 |
|
|
2.24 Sat Feb 12 05:15:48 CET 2011 |
111 |
|
|
- protocol version 0.1, compatible with older releases. |
112 |
root |
1.95 |
- due to a bug, when packets were lost, a connection could go into a |
113 |
root |
1.94 |
state where a ping/connection request from another node would be |
114 |
root |
1.96 |
ignored, leading to connections not being re-established. |
115 |
pcg |
1.93 |
- due to a bug, compression was almost always enabled. |
116 |
pcg |
1.92 |
- enable-max-mtu was actually enable-mtu, contrary to documentation. |
117 |
pcg |
1.90 |
- add nfmark support. |
118 |
pcg |
1.91 |
- add node-change script support. |
119 |
|
|
- new DESTSI variable for node-xxx scripts. |
120 |
root |
1.95 |
- updated codingstyle a bit, declared truly static stuff as static. |
121 |
root |
1.96 |
- clarify compression docs. |
122 |
pcg |
1.90 |
|
123 |
pcg |
1.89 |
2.22 Sun Feb 1 17:25:28 CET 2009 |
124 |
root |
1.97 |
- protocol version 0.1, compatible with older releases. |
125 |
pcg |
1.86 |
- enabled icmp/tcp/http-proxy protocols by default. |
126 |
pcg |
1.85 |
- updated copyright in program greetings. |
127 |
pcg |
1.86 |
- fix some configure messages. |
128 |
pcg |
1.87 |
- updated to libev 3.52. |
129 |
pcg |
1.85 |
|
130 |
pcg |
1.84 |
2.21 Wed Sep 3 06:56:27 CEST 2008 |
131 |
root |
1.97 |
- protocol version 0.1, compatible with older releases. |
132 |
pcg |
1.84 |
- add missing ev++.h include header to tarball, which everybody |
133 |
|
|
who tested it apparently had in their include path :(. Caught |
134 |
pcg |
1.85 |
by Karl Kleinpaste and Marcus Kong. |
135 |
pcg |
1.84 |
|
136 |
pcg |
1.83 |
2.2 Mon Sep 1 06:28:09 CEST 2008 |
137 |
root |
1.97 |
- protocol version 0.1, compatible with older releases. |
138 |
pcg |
1.78 |
but upgrade is recommended to due changed ondemand behaviour. |
139 |
|
|
- new per-node options max-ttl and max-queue. |
140 |
pcg |
1.72 |
- convert from iom.C to libev, a high-performance event loop |
141 |
pcg |
1.71 |
(http://software.schmorp.de/pkg/libev). |
142 |
pcg |
1.73 |
- tcp connections were leaking in some cases. |
143 |
pcg |
1.78 |
- retry more aggressively (once/s) to establish a connection if |
144 |
|
|
new packets arrive for it. |
145 |
pcg |
1.75 |
- save a lot of setsockopt calls when the tos doesn't change. |
146 |
pcg |
1.78 |
- honor disabled even on initial connect attempt. |
147 |
pcg |
1.76 |
- changed callback mechanism to be slightly less portable |
148 |
|
|
but more efficient mechanism (standards-compliant c++ compilers |
149 |
|
|
should work). |
150 |
pcg |
1.80 |
- increased receive window positive size, to allow for massive |
151 |
|
|
packet loss due to occasional longer drop-outs. |
152 |
|
|
- send RST when a positive window size violation is detected, but |
153 |
|
|
not in other cases, to reconnect more quickly. |
154 |
pcg |
1.83 |
- upgraded liblzf to version 3.4. |
155 |
pcg |
1.77 |
- dropped -fno-exceptions due to ev++.h using it. |
156 |
pcg |
1.81 |
- node-up/down scripts are now run in sequence. |
157 |
|
|
- new -q switch for gvpectrl, for when you run it often. |
158 |
pcg |
1.82 |
- work around the horribly inconsistent, ad-hoc, ever-changing |
159 |
|
|
and broken texinfo syntax. YMMV. avoid texinfo. |
160 |
pcg |
1.83 |
- keepalive is more aggressive now, sensding ping's every 3 seconds |
161 |
|
|
and killing the conenction after 15 seconds. |
162 |
pcg |
1.71 |
- bugfixes. |
163 |
|
|
|
164 |
pcg |
1.70 |
2.01 Thu Mar 29 19:26:04 CEST 2007 |
165 |
pcg |
1.69 |
- protocol version 0.1, compatible with older releases. |
166 |
pcg |
1.68 |
- bugfix of callback.h, might have cause callback return values to |
167 |
|
|
be corrupted on architectures like sparc before. |
168 |
pcg |
1.69 |
- dns transport retries more aggressively. |
169 |
pcg |
1.70 |
- updated documentation, improved dns transport reliability |
170 |
|
|
and throughput. |
171 |
|
|
- added experimental support for sha256 and sha512 digests. |
172 |
pcg |
1.67 |
|
173 |
pcg |
1.66 |
2.0 Mon Dec 5 13:59:26 CET 2005 |
174 |
pcg |
1.56 |
- protocol version 0.1, compatible with older releases. |
175 |
pcg |
1.65 |
- implement allow-direct, deny-direct node config statements. |
176 |
pcg |
1.59 |
- implemented != for sockinfo. This fixes a bug where |
177 |
|
|
gvpe sent packets to the old ip address of another host |
178 |
|
|
even though it had received packets from it's new address. |
179 |
pcg |
1.61 |
This only causes problems if you forget to -HUP your gvpe after |
180 |
pcg |
1.59 |
your ip address changed, which is *required*. |
181 |
pcg |
1.64 |
- sets close-on-exec flag on tcp connections. This fixes a bug |
182 |
|
|
where child processes kept tcp connections open and caused |
183 |
|
|
connections to fail when only one side can connect. |
184 |
|
|
- fixed a bug in receive sequence checking that made gvpe |
185 |
|
|
accept out-of-window packets in most cases. |
186 |
pcg |
1.61 |
- tighter limit for the maximum sequence # to avoid overflow |
187 |
|
|
conditions + allow more headroom for packet reordering. |
188 |
pcg |
1.66 |
- replace some asserts that trapped config mismatches by |
189 |
pcg |
1.62 |
more useful log messages. |
190 |
pcg |
1.63 |
- fix spurious extra newline in some log messages. |
191 |
pcg |
1.56 |
|
192 |
pcg |
1.55 |
1.9 Tue Apr 19 06:21:50 CEST 2005 |
193 |
pcg |
1.56 |
- protocol version 0.1, compatible with older releases. |
194 |
pcg |
1.49 |
- WARNING: this version checks the return value of if-up etc. |
195 |
|
|
scripts and exits on failure. |
196 |
pcg |
1.50 |
- IMPORTANT: run if-up/node-up etc. scripts via /bin/sh. |
197 |
|
|
- IMPORTANT: interface initialization (MAC, MTU) is now done |
198 |
|
|
automatically in most configurations. |
199 |
pcg |
1.54 |
- options can now be specified on the gvpe command line, too. |
200 |
pcg |
1.49 |
- make some DNS transport values configurable and document them. |
201 |
|
|
- improved OS specific information in gvpe.osdep(5). |
202 |
pcg |
1.51 |
- new tap device type "native/darwin", that supports the tap |
203 |
pcg |
1.45 |
driver available for darwin (thanks to matthew mead who tested |
204 |
pcg |
1.47 |
it out with me in a long session). tincd/darwin is still available. |
205 |
pcg |
1.51 |
- new device type "tincd/bsd", which is a newer version of the |
206 |
|
|
*bsd-drivers taken from tinc. |
207 |
pcg |
1.46 |
- fixed a bug in relying on the order of global construction |
208 |
|
|
when tcp transport was enabled. The fix makes it use no |
209 |
|
|
cpu time unless it is in use, too. |
210 |
pcg |
1.52 |
- information about other nodes is now available to if-up etc. scripts. |
211 |
|
|
- the value of the config variable if-up-data is passed to the if-up |
212 |
|
|
etc. scripts. |
213 |
pcg |
1.49 |
- skip unparsable config lines with a warning instead of stopping |
214 |
|
|
parsing and continuing with a certainly unusable config. |
215 |
pcg |
1.43 |
|
216 |
pcg |
1.41 |
1.8 Fri Mar 18 00:58:55 CET 2005 |
217 |
pcg |
1.56 |
- protocol version 0.1, compatible with older releases. |
218 |
pcg |
1.36 |
- enable-udp = yes is now default only when no other protocols |
219 |
|
|
are enabled. otherwise it is disabled unless explicitly enabled. |
220 |
pcg |
1.40 |
- implemented dns tunneling (experimental now and in the future). |
221 |
pcg |
1.39 |
- remove support for pre-release version protocol. |
222 |
pcg |
1.41 |
- updated tincd drivers (rev 1433), added uml_socket driver, documented |
223 |
|
|
tincd drivers a bit better. |
224 |
pcg |
1.40 |
- document icmp configuration values. |
225 |
|
|
- document transport protocols in gvpe.protocol(7). |
226 |
|
|
- remove unused ChangeLog file. |
227 |
pcg |
1.41 |
- created a mailinglist at gvpe@lists.schmorp.de. |
228 |
|
|
- added an exemption to allow distribution of binaries linked against |
229 |
|
|
OpenSSL, as suggested by Guus Sliepen (author of tinc). No |
230 |
|
|
GNUTLS conversion in sight. |
231 |
pcg |
1.42 |
- some portability fixes with respect to --disable-nls. |
232 |
pcg |
1.36 |
|
233 |
pcg |
1.35 |
1.7 Tue Feb 22 23:58:59 CET 2005 |
234 |
pcg |
1.32 |
- protocol version 0.1, compatible with older releases. |
235 |
pcg |
1.26 |
- first gnu release. |
236 |
pcg |
1.27 |
- documented the special value 1 for router-priority. |
237 |
pcg |
1.26 |
- renamed vped => gvpe and vpectrl => gvpectrl, as well as |
238 |
|
|
vped.conf => gvpe.conf. |
239 |
pcg |
1.29 |
- new per-node option "max-retry". |
240 |
pcg |
1.22 |
- asymmetric rekeying behaviour, so hosts don't rekey simultaneously. |
241 |
pcg |
1.24 |
- new configure option --enable-static-daemon. |
242 |
pcg |
1.23 |
- fix configure --help output. |
243 |
pcg |
1.26 |
- many documentation layout fixes. |
244 |
pcg |
1.28 |
- synced iom.[Ch] from rxvt-unicode. |
245 |
pcg |
1.34 |
- try to cope with some non-monotonic time changes. |
246 |
pcg |
1.30 |
- revert to locale.h - a usual, clocale is nonfunctioning on macosx. |
247 |
pcg |
1.32 |
- considerably improved pod2texi and the resulting texi doc. |
248 |
pcg |
1.22 |
|
249 |
pcg |
1.21 |
1.6.1 Wed May 12 14:48:20 CEST 2004 |
250 |
pcg |
1.32 |
- protocol version 0.1, compatible with older releases. |
251 |
pcg |
1.22 |
- fix -c switch that has been broken due to a last-minute fix |
252 |
|
|
to option and config file parsing. |
253 |
pcg |
1.21 |
|
254 |
pcg |
1.20 |
1.6 Mon May 10 20:55:10 CEST 2004 |
255 |
pcg |
1.22 |
- protocol version 0.1, compatible with older releases. |
256 |
|
|
- do not RESET on out-of-sequence packets (good for wireless). |
257 |
|
|
- various non-security-related bugfixes. |
258 |
|
|
- c++ify (at least make it compile with g++-3.4, which should make |
259 |
|
|
it a little bit more standard c++). |
260 |
pcg |
1.19 |
|
261 |
pcg |
1.18 |
1.5 Fri Jan 30 00:50:04 CET 2004 |
262 |
pcg |
1.22 |
- protocol version 0.1, compatible with older releases. |
263 |
|
|
- vped will refuse to start when hostkey and public key do not match. |
264 |
|
|
- updated lzf code to version 1.2. |
265 |
|
|
- better error reporting for "unusual" conditions, like failing |
266 |
|
|
to allocate memory, that should not normally happen and |
267 |
|
|
will otherwise result in spurious other error messages. Also |
268 |
|
|
adds paranoid checks in case openssl's API changes in a bad way. |
269 |
|
|
- fix a bug where queued vpn packets were cleared to zero. while |
270 |
|
|
this doesn't affect security, it did cause warning messages and |
271 |
|
|
unnecessary connectivity delays. |
272 |
pcg |
1.15 |
|
273 |
pcg |
1.13 |
1.4 Sat Jan 17 15:49:21 CET 2004 |
274 |
pcg |
1.22 |
- protocol version 0.1, compatible with older releases. |
275 |
|
|
- better retry behaviour on key mismatch. |
276 |
|
|
- use select-based io_manager instead of poll-based one. |
277 |
|
|
- share io manager between rxvt-unicode and vpe. |
278 |
|
|
- sooo many *BSD workarounds because no BSD I could find is even |
279 |
|
|
remotely POSIX-compatible. |
280 |
pcg |
1.11 |
|
281 |
pcg |
1.10 |
1.2 Fri Oct 17 03:44:44 CEST 2003 |
282 |
pcg |
1.22 |
- protocol version 0.1. |
283 |
|
|
- tincd kernel interface code imported, more supported platforms |
284 |
|
|
(native/linux (2.4), tincd/linux (2.2 and 2.4), tincd/freebsd, |
285 |
|
|
native/cygwin). |
286 |
|
|
- added primitive ethernet emulation (ipv4 only), which allows |
287 |
|
|
the following platforms that only have tun drivers to work: |
288 |
|
|
/* none yet tested */ |
289 |
|
|
- portability workarounds, especially for unfriendly freebsd |
290 |
|
|
- very minor bugfixes |
291 |
|
|
- warnings when choosing insecure ciphers/hashes |
292 |
|
|
- reduced default hmac length to 8. |
293 |
|
|
- cvs now contains configure, Makefile.in and other generated files. |
294 |
|
|
- added doc/complex-example to the distribution. |
295 |
|
|
|
296 |
|
|
1.0 distant past |
297 |
|
|
- protocol version 0.1. |
298 |
|
|
- tweaked various timeouts to help very slow (486) class |
299 |
|
|
machines or nets with many hosts. |
300 |
|
|
- tweaked rate-limiting to be more forgiving for hosts |
301 |
|
|
connecting through routers (not a fix). |
302 |
pcg |
1.2 |
|