| 1 | TODO: enable bridging (compile-time option?) |
1 | GVPE NEWS |
| 2 | TODO: explore DTLS |
|
|
| 3 | |
2 | |
| 4 | 2.0 |
3 | - update embedded liblzf. |
|
|
4 | - use liblzf with static hash table: lowers stack usage. |
|
|
5 | - do not initialise liblzf hash table for faster operation. |
|
|
6 | - use C++ variadic templates for callback.h, get rid of callback.pl. |
|
|
7 | |
|
|
8 | 3.1 Sat Oct 27 07:50:43 CEST 2018 |
|
|
9 | - port to openssl 1.1 BUT SEE WARNING IN configure.ac. Do not use! |
|
|
10 | - tinc cruft removal: remove getopt.[ch], it's less portable to |
|
|
11 | have it then to not have it. |
|
|
12 | - tinc cruft removal: use pkg-config to detect libressl/openssl. |
|
|
13 | - minor cleanups. |
|
|
14 | |
|
|
15 | 3.0 Thu Nov 10 15:39:58 CET 2016 |
|
|
16 | - INCOMPATIBLE CHANGE: core protocol version 1.0. |
|
|
17 | - INCOMPATIBLE CHANGE: node sections are now introduced |
|
|
18 | with "node nodename", not "node = nodename". |
|
|
19 | - INCOMPATIBLE CHANGE: gvpectrl -g will now generate a single |
|
|
20 | keypair, while -G will try to generate all keypairs as before. |
|
|
21 | - openssl 1.0.2 is the latest supported openssl release, |
|
|
22 | openssl 1.1.0 is not supported at the moment as the work to |
|
|
23 | make it compatible to both versions is just too much. a switch |
|
|
24 | to openssl 1.1 or another library will be done in a future release. |
|
|
25 | - update examples to not generate keys centrally, but locally on each |
|
|
26 | node. |
|
|
27 | - add workaround for temporary/rare ENOBUFS condition. |
|
|
28 | - while individual packets couldn't be replayed, a whole session |
|
|
29 | could be replayed - this has been fixed by an extra key exchange. |
|
|
30 | - fix a delete vs. delete [] mismatch in the central logging function. |
|
|
31 | - in addition to rsa key exchange and authentication, the handshake now |
|
|
32 | adds a diffie-hellman key exchange (using curve25119) for perfect |
|
|
33 | forward secrecy. mac and cipher keys are derived using HKDF. |
|
|
34 | - rsa key sizes are now configurable and larger (default is 3072). |
|
|
35 | correspondingly, the minimum mtu is no longer 296 but 576. |
|
|
36 | - fixed a potential (unverified) buffer overrun on rsa decryption. |
|
|
37 | - new per-node low-power setting that tries to reduce cpu/network usage. |
|
|
38 | - router reconnects could cause excessive rekeying on other connections. |
|
|
39 | - gvpectrl no longer generates all missing public keys, but |
|
|
40 | only missing private keys. private keys are also put |
|
|
41 | into the configured location. |
|
|
42 | - the pid-file now accepts %s as nodename as elsewhere. |
|
|
43 | - switch to counter mode (only aes supported at the moment in |
|
|
44 | openssl). this gets rid of the need to generate a random iv, |
|
|
45 | is likely more secure (and, as a side effect, gets rid of |
|
|
46 | slow randomness generation. counter mode is often faster |
|
|
47 | then cbc mode as well, and packets are smaller). |
|
|
48 | - no longer use RAND_bytes to generate session keys - you NEED |
|
|
49 | a real source of entropy now (e.g. egd or /dev/random - see the |
|
|
50 | openssl documentation). |
|
|
51 | - multiple node statements for the same node are now supported |
|
|
52 | and will be merged. |
|
|
53 | - a new directive "global" switches back to the global section |
|
|
54 | of the config file. |
|
|
55 | - if-up scripts can now be specified with absolute paths. |
|
|
56 | - new global option: serial, to detect configuration mismatches. |
|
|
57 | - use HKDF as authentication proof, not HMAC or a plain hash |
|
|
58 | (hint by Ilmari Karonen). |
|
|
59 | - during rekeying or connection establishments, hmac authentication |
|
|
60 | errors could occur and reset the connection. Transient hmac |
|
|
61 | authentication errors are now being ignored for 3 seconds. |
|
|
62 | - log the reason for a conneciton loss. |
|
|
63 | - use a (hopefully) constant time memcmp to compare internal secrets. |
|
|
64 | - fix a (harmless) errornous out of bounds stack read that would trigger |
|
|
65 | gcc's -fsanitize=address. |
|
|
66 | - bump old packet window size from 512 to 65536. |
|
|
67 | - update for big changes in openssl 1.1 API, wrap primitives |
|
|
68 | to make further changes easier. |
|
|
69 | - correctly check return values for openssl 1.0.0 and later. |
|
|
70 | - check for both public and private key file when deciding whether |
|
|
71 | to skip generating a key to avoid accidental overwrites. |
|
|
72 | |
|
|
73 | 2.25 Sat Jul 13 06:42:33 CEST 2013 |
|
|
74 | - INCOMPATIBLE CHANGE: no longer enable udp protocol if no other |
|
|
75 | protocols are enabled - this is necessary when you have nodes with |
|
|
76 | completely unknown protocols, to force mediated connection requests. |
|
|
77 | - INCOMPATIBLE CHANGE: dns transport protocol bumped to version 2. |
| 5 | - protocol version 0.1, compatible with older releases. |
78 | - core protocol version 0.1, compatible with older releases. |
|
|
79 | - switch to using RSA_generate_key_ex, which is the badly documented |
|
|
80 | and needlessly more complicated replacement for the RSA_generate_key |
|
|
81 | function which is now deprecated. |
|
|
82 | - support additional hmac hashes: sha256 and sha512, usually truncated. |
|
|
83 | - change public exponent for rsa keys from 65535 to 65537, for |
|
|
84 | efficiency reasons - only affects new keys. |
|
|
85 | - nodes would sometimes declare transport endpoints valid despite |
|
|
86 | the protocol not being configured locally. |
|
|
87 | - new global configuration options: chroot, chuser, chuid, chgid, |
|
|
88 | to chroot to a specified or anonymous new root, and change user id. |
|
|
89 | - new global configuration options seed_device and seed_interval, |
|
|
90 | to configure another device than /dev/urandom for random seeds, |
|
|
91 | and to configure a regular interval to reseed the rng. |
|
|
92 | - prefer inet_aton over gethostbyname, as the latter is not guaranteed |
|
|
93 | to "resolve" literal ip addresses. |
|
|
94 | - configure didn't detect openssl 1.0 because SHA1_version became private |
|
|
95 | (patch by TANIGUCHI Takaki). |
|
|
96 | - fix a bug where nodes would tell the other side that it supports |
|
|
97 | the same protocols as that other side, instead of its own. |
|
|
98 | - add zlib when found, as openssl depends on it in newer versions. |
|
|
99 | - work around append-bugs in uclibc by using an extra seek. |
|
|
100 | - new "include" directive for the config file. |
|
|
101 | - gvpectrl no longer evaluates any "on" directives. |
|
|
102 | - icmp and rawip protocols weren't upgradable to each other. |
|
|
103 | - major, but incremental, dns transport improvements: |
|
|
104 | - do not simply abort in some error cases in the dns transport, |
|
|
105 | but try to recover. |
|
|
106 | - allow lowercase/uppercase aliases for base-n encodings that do |
|
|
107 | not rely on case. |
|
|
108 | - use base26 instead of base22 encoding for dns syn's, and |
|
|
109 | base36 instead of base22 for headers (saves one byte/packet). |
|
|
110 | - back off far quicker in dns tunnel when idling - increases |
|
|
111 | latency on an idle link somewhat, but avoids hundreds of |
|
|
112 | needless packets. |
|
|
113 | - poll more aggressively when idling in dns (poll once per |
|
|
114 | second as opposed to once per 5 seconds). |
|
|
115 | - reduce dns send payload size to allow greater rate of ack |
|
|
116 | messages (should help sack and ipv6). |
|
|
117 | - allow for ip options in rawip/icmp transports, even though gvpe |
|
|
118 | doesn't generate them. |
|
|
119 | - upgrade to autoconf 2.69, automake 1.11. |
|
|
120 | - upgrade to libev 4 API. |
|
|
121 | - replace COPYING file by actual GPLv3 - files were relicensed to GPLv3 |
|
|
122 | earlier but COPYING was forgotten. |
|
|
123 | |
|
|
124 | 2.24 Sat Feb 12 05:15:48 CET 2011 |
|
|
125 | - protocol version 0.1, compatible with older releases. |
|
|
126 | - due to a bug, when packets were lost, a connection could go into a |
|
|
127 | state where a ping/connection request from another node would be |
|
|
128 | ignored, leading to connections not being re-established. |
|
|
129 | - due to a bug, compression was almost always enabled. |
|
|
130 | - enable-max-mtu was actually enable-mtu, contrary to documentation. |
|
|
131 | - add nfmark support. |
|
|
132 | - add node-change script support. |
|
|
133 | - new DESTSI variable for node-xxx scripts. |
|
|
134 | - updated codingstyle a bit, declared truly static stuff as static. |
|
|
135 | - clarify compression docs. |
|
|
136 | |
|
|
137 | 2.22 Sun Feb 1 17:25:28 CET 2009 |
|
|
138 | - protocol version 0.1, compatible with older releases. |
|
|
139 | - enabled icmp/tcp/http-proxy protocols by default. |
|
|
140 | - updated copyright in program greetings. |
|
|
141 | - fix some configure messages. |
|
|
142 | - updated to libev 3.52. |
|
|
143 | |
|
|
144 | 2.21 Wed Sep 3 06:56:27 CEST 2008 |
|
|
145 | - protocol version 0.1, compatible with older releases. |
|
|
146 | - add missing ev++.h include header to tarball, which everybody |
|
|
147 | who tested it apparently had in their include path :(. Caught |
|
|
148 | by Karl Kleinpaste and Marcus Kong. |
|
|
149 | |
|
|
150 | 2.2 Mon Sep 1 06:28:09 CEST 2008 |
|
|
151 | - protocol version 0.1, compatible with older releases. |
|
|
152 | but upgrade is recommended to due changed ondemand behaviour. |
|
|
153 | - new per-node options max-ttl and max-queue. |
|
|
154 | - convert from iom.C to libev, a high-performance event loop |
|
|
155 | (http://software.schmorp.de/pkg/libev). |
|
|
156 | - tcp connections were leaking in some cases. |
|
|
157 | - retry more aggressively (once/s) to establish a connection if |
|
|
158 | new packets arrive for it. |
|
|
159 | - save a lot of setsockopt calls when the tos doesn't change. |
|
|
160 | - honor disabled even on initial connect attempt. |
|
|
161 | - changed callback mechanism to be slightly less portable |
|
|
162 | but more efficient mechanism (standards-compliant c++ compilers |
|
|
163 | should work). |
|
|
164 | - increased receive window positive size, to allow for massive |
|
|
165 | packet loss due to occasional longer drop-outs. |
|
|
166 | - send RST when a positive window size violation is detected, but |
|
|
167 | not in other cases, to reconnect more quickly. |
|
|
168 | - upgraded liblzf to version 3.4. |
|
|
169 | - dropped -fno-exceptions due to ev++.h using it. |
|
|
170 | - node-up/down scripts are now run in sequence. |
|
|
171 | - new -q switch for gvpectrl, for when you run it often. |
|
|
172 | - work around the horribly inconsistent, ad-hoc, ever-changing |
|
|
173 | and broken texinfo syntax. YMMV. avoid texinfo. |
|
|
174 | - keepalive is more aggressive now, sensding ping's every 3 seconds |
|
|
175 | and killing the conenction after 15 seconds. |
|
|
176 | - bugfixes. |
|
|
177 | |
|
|
178 | 2.01 Thu Mar 29 19:26:04 CEST 2007 |
|
|
179 | - protocol version 0.1, compatible with older releases. |
|
|
180 | - bugfix of callback.h, might have cause callback return values to |
|
|
181 | be corrupted on architectures like sparc before. |
|
|
182 | - dns transport retries more aggressively. |
|
|
183 | - updated documentation, improved dns transport reliability |
|
|
184 | and throughput. |
|
|
185 | - added experimental support for sha256 and sha512 digests. |
|
|
186 | |
|
|
187 | 2.0 Mon Dec 5 13:59:26 CET 2005 |
|
|
188 | - protocol version 0.1, compatible with older releases. |
|
|
189 | - implement allow-direct, deny-direct node config statements. |
|
|
190 | - implemented != for sockinfo. This fixes a bug where |
|
|
191 | gvpe sent packets to the old ip address of another host |
|
|
192 | even though it had received packets from it's new address. |
|
|
193 | This only causes problems if you forget to -HUP your gvpe after |
|
|
194 | your ip address changed, which is *required*. |
|
|
195 | - sets close-on-exec flag on tcp connections. This fixes a bug |
|
|
196 | where child processes kept tcp connections open and caused |
|
|
197 | connections to fail when only one side can connect. |
|
|
198 | - fixed a bug in receive sequence checking that made gvpe |
|
|
199 | accept out-of-window packets in most cases. |
|
|
200 | - tighter limit for the maximum sequence # to avoid overflow |
|
|
201 | conditions + allow more headroom for packet reordering. |
|
|
202 | - replace some asserts that trapped config mismatches by |
|
|
203 | more useful log messages. |
|
|
204 | - fix spurious extra newline in some log messages. |
| 6 | |
205 | |
| 7 | 1.9 Tue Apr 19 06:21:50 CEST 2005 |
206 | 1.9 Tue Apr 19 06:21:50 CEST 2005 |
| 8 | - protocol version 0.1, compatible with older releases. |
207 | - protocol version 0.1, compatible with older releases. |
| 9 | - WARNING: this version checks the return value of if-up etc. |
208 | - WARNING: this version checks the return value of if-up etc. |
| 10 | scripts and exits on failure. |
209 | scripts and exits on failure. |
