1 * Fri Dec 16 2005 Brendan O'Dea <bod@optus.net> 2.1.15
3 - Reduce logging of LCP EchoReply packets.
4 - Break LCP configure loop with shutdown.
6 * Fri Dec 9 2005 Brendan O'Dea <bod@optus.net> 2.1.14
7 - Run PLUGIN_RADIUS_ACCOUNT for Start records.
9 * Wed Dec 7 2005 Brendan O'Dea <bod@optus.net> 2.1.13
10 - Add test/ping-sweep.
11 - Apply spec changes from Charlie Brady: use License header, change
12 BuildRoot to include username.
13 - Fix IPCP negotiation of secondary DNS server, reported by Jon Morby.
14 - Clean up sessiont, removing some unused fields.
15 - Remove unused "MAC" config type.
16 - Reject unknown/unconfigured protocols on the master.
17 - Sanity check MRU before using in ppp_code_rej, protoreject.
19 * Thu Nov 17 2005 Brendan O'Dea <bod@optus.net> 2.1.12
20 - Set MTU on tunnel interface so the kernel will re-fragment large
21 packets to within MRU.
22 - Fix TCP checksum recalc.
23 - NAK silly MRU values from peer.
25 * Mon Nov 14 2005 Brendan O'Dea <bod@optus.net> 2.1.11
26 - Fix fragment handling in ip_filter.
27 - Exclude counter when comparing filter rules.
29 * Sat Nov 5 2005 Brendan O'Dea <bod@optus.net> 2.1.10
30 - Add scripts/l2tpns-capture.
31 - Fix LCP Echo frequency.
32 - Add Framed-Route entries to RADIUS records.
33 - Reset restart counters correctly.
34 - Reset timers on sending ConfigReq.
35 - Only send one RADIUS Start record, even if IPCP is restarted.
37 * Tue Oct 11 2005 Brendan O'Dea <bod@optus.net> 2.1.9
38 - Fix Calling-Station-Id in RADIUS accounting records (Slobodan Tomic).
39 - Fix RADIUS authentication on DAE responses.
40 - Don't send tunnel HELLO when there are pending control messages.
41 - Move plugin_radius_reset from *ctl to auto* plugins.
42 - Add Cisco-AVPairs to RADIUS accounting records via plugin_radius_account.
44 * Mon Sep 19 2005 Brendan O'Dea <bod@optus.net> 2.1.8
45 - Move code from signal handlers into mainloop, avoiding a race
46 condition when forking CLI.
48 * Fri Sep 16 2005 Brendan O'Dea <bod@optus.net> 2.1.7
49 - This time, for sure: really fix Protocol-Reject.
51 * Fri Sep 16 2005 Brendan O'Dea <bod@optus.net> 2.1.6
52 - Any traffic on a tunnel resets lastrec, not just control messages.
53 - Use a unique identifier for LCP.
54 - Fix Code-Reject/Protocol-Reject.
55 - Add l2tp_mtu configuration option, used to define MRU, MSS.
56 - Adjust TCP MSS options in SYN and SYN,ACK packets to avoid
57 fragmentation of tcp packets.
59 * Sat Sep 3 2005 Brendan O'Dea <bod@optus.net> 2.1.5
60 - Avoid Code-Reject loop.
61 - Increase size of PPP buffers to MAXETHER.
62 - Bug fixes for CLI ringbuffer and tunnel HELLO from Yuri.
63 - Restart rather than halt BGP on receipt of CEASE (Dominique Rousseau).
64 - Add cluster_mcast_ttl option to allow a cluster to span multiple
65 subnets (suggested by Tim Devries).
67 * Mon Aug 29 2005 Brendan O'Dea <bod@optus.net> 2.1.4
68 - Drop level of "Unexpected CHAP message" log.
69 - Fix parsing of ProtocolRej (allow 1 or two byte protocols).
70 - Handle rejection of MRU negotiation by peer.
71 - Use local hostname for tunnel in SCCRP (Alex Kiernan).
73 * Wed Aug 17 2005 Brendan O'Dea <bod@optus.net> 2.1.3
74 - Fail IPCP negotiation only on ConfigRej of IP-Address.
76 * Wed Aug 10 2005 Brendan O'Dea <bod@optus.net> 2.1.2
77 - Clear cluster_master on election so that slaves will accept a new master.
78 - Provide more comments/defaults in etc/startup-config.default.
79 - Add DAE support (PoD/CoA) from Vladislav Bjelic.
80 - Clean up new warnings from gcc 4.0.
81 - Replace flags used for LCP/IPCP with state machine.
82 - Include Acct-Session-Time in interim records.
83 - Fix DAE vector, generateload (Alex Kiernan).
84 - Replace RSA MD5 with public domain version.
86 * Tue Jun 14 2005 Brendan O'Dea <bod@optusnet.com.au> 2.1.1
87 - Add missing newline to backtrace macro.
88 - Don't send CDN for each session when shutting down tunnels (this is
90 - Move tunnel shutdown from SIGQUIT signal handler to be run once from
91 still_busy(). Reject new tunnels/sessions while in the process of
93 - Clarify usage of shutdown signals in documentation.
94 - Always initialise PRNG.
95 - Sanity check length of random_vector.
96 - Fix segv in unhide_value.
97 - Ping new master when we get C_MASTER and delay next election to allow
98 the unicast limp-along code to kick in if required.
100 * Sun Jun 5 2005 Brendan O'Dea <bod@optusnet.com.au> 2.1.0
101 - Add IPv6 support from Jonathan McDowell.
102 - Add CHAP support from Jordan Hrycaj.
103 - Add interim accounting support from Vladislav Bjelic.
104 - Negotiate MRU, default 1458 to avoid fragmentation.
105 - Sanity check that cluster_send_session is not called from a child
107 - Use bounds-checking lookup functions for string constants.
108 - Add enum for RADIUS codes.
109 - Make "call_" prefix implict in CSTAT() macro.
110 - Fix some format string problems.
111 - Remove "save_state" option. Not maintained anymore; use clustering
112 to retain state across restarts.
113 - Simplify AVP unhiding code.
114 - Add optional "username" parameter to ungarden control, allowing the
115 username to be reset before going online.
116 - Add result/error codes and message to StopCCN when shutting down tunnels.
117 - Add result/error codes to CDN when shutting down sessions. Sends 2/7
118 (general error, try another LNS) when out of IP addresses, and 3
119 (adminstrative) for everything else (suggestion from Chris Gates).
120 - Use cli_error() for error messages and help.
121 - Don't use LOG() macro in initdata() until the config struct has been
122 allocated (uses config->debug).
123 - Initialise log_stream to stderr to catch errors before the config file
125 - Make "show running-config" a privileged command (contains clear text
127 - Add sessionctl plugin to provide drop/kill via nsctl.
128 - New config option: allow_duplicate_users which determines whether
129 or not to kill older sessions with the same username.
130 - Fix byte counters in accounting records.
131 - Add Acct-Output-Gigawords, Acct-Input-Gigawords attributes to RADIUS
133 - Fix icmp host unreachable to use router address.
134 - Include endpoint address in accounting dump files.
135 - Convert mainloop to use epoll rather than select.
136 - Add note about fragmentation in Docs/manual.html, and a sample
137 iptables rule for MSS clamping.
139 + Show session open time in "show session"/"show user" detailed output.
140 + Have slaves with BGP configured drop BGP on receipt of a shutdown
141 signal, but hang about for an additional 5s to process any remaining
143 + Run regular_cleanups after processing the results of the select,
144 looking at a sufficient slice of each table to ensure that all
145 entries are examined at least once per second.
147 + Cluster changes from Michael, intended to prevent a stray master
148 from trashing a cluster:
149 = Ignore heartbeats from peers claiming to be the master before the
150 timeout on the old master has expired.
151 = A master receiving a stray heartbeat sends a unicast HB back, which
152 should cause the rogue to die due to the tie-breaker code.
153 = Keep probing the master for late heartbeats.
154 = Drop BGP as soon as we become master with the minumum required peers.
155 = Any PING seen from a master forces an election (rather than just
156 where basetime is zero).
157 = A slave which receives a LASTSEEN message (presumably a restarted
158 master) sends back new message type, C_MASTER which indicates the
159 address of the current master.
160 + New config option: cluster_master_min_adv which determines the minimum
161 number of up to date slaves required before the master will drop
164 + Add handling of "throttle=N" RADIUS attributes.
165 + Fix RADIUS indexing (should have 16K entries with 64 sockets).
167 + Fix leak in session freelist when initial RADIUS session allocation
170 + Add a Cisco-Avpair with intercept details to RADIUS Start/Stop
173 + Only send RADIUS stop record in sessionshutdown when there's an ip address.
174 + Reset .die on master takeover (so that dying sessions don't have to
175 hang around until the new master has the same uptime as the old one).
176 + Update .last_packet in cluster_handle_bytes only when there have
177 been bytes received from the modem (dead sessions were having the
178 idle timeout reset by stray packets).
180 + Ensure that sessionkill is not called on an unopened session (borks
182 + Bump MAXSESSION to 60K.
183 + Fix off-by-one errors in session/tunnel initialisation and
184 sessiont <-> sessionidt functions.
185 + Use session[s].opened consistently when checking for in-use sessions
186 (rather than session[s].tunnel).
187 + Use <= cluster_highest_sessionid rather than < MAXSESSION in a
189 + Don't kill a whole tunnel if we're out of sessions.
190 + Change session[s].ip to 0 if set from RADIUS to 255.255.255.254;
191 avoids the possibility that it will be interpreted as a valid IP
193 + Avoid a possible buffer overflow in processpap.
194 + Kill session if authentication was rejected.
196 + More DoS prevention: add packet_limit option to apply a hard limit
197 to downstream packets per session.
198 + Fix "clear counters".
199 + Log "Accepted connection to CLI" at 4 when connection is from localhost
200 to reduce noise in logs.
201 + Show time since last counter reset in "show counters".
203 + Throttle outgoing LASTSEEN packets to at most one per second for a
206 * Fri Dec 17 2004 Brendan O'Dea <bod@optusnet.com.au> 2.0.13
207 - Better cluster master collision resolution: keep a counter of state
208 changes, propagated in the heartbeats; the master with the highest #
209 of changes (that has kept in contact with the LAC through the
211 - Skip newlines in ringbuffer messages to CLI.
212 - Drop "Session N is closing" message level to 4; don't process PPPIP
213 packets in this state.
214 - Use gzip --best for man pages, include pid_file in sample
215 startup-config (from Jonathan's Debian package patches).
216 - Read multiple packets off cluster_sockfd as well as udpfd, tunfd in an
217 attempt to avoid losing the cluster in high load (DoS) conditions.
218 - Add counters for select_called, multi_read_used and multi_read_exceeded.
220 - Retain counters of shutdown sessions to dump once per minute.
221 - Use standard uintN_t types for portability.
223 * Wed Dec 1 2004 Brendan O'Dea <bod@optusnet.com.au> 2.0.12
224 - The "This time, for sure!" release.
225 - Fix throttlectl plugin argument parsing.
227 * Wed Dec 1 2004 Brendan O'Dea <bod@optusnet.com.au> 2.0.11
228 - Don't send a RADIUS start record when ungardening on shutdown.
230 * Wed Dec 1 2004 Brendan O'Dea <bod@optusnet.com.au> 2.0.10
231 - Fix byte ordering of LCP header length (thanks Yuri).
232 - Increase ip_conntrack_max due to dropped packets.
234 * Tue Nov 30 2004 Brendan O'Dea <bod@optusnet.com.au> 2.0.9
235 - Revise CCP, send ConfigReq once only.
236 - Don't copy the old buffer into Config{Nak,Rej} LCP responses (oops);
237 add length checks when appending.
238 - Do copy the identifier from the request and update length.
239 - Have makeppp print a backtrace on overflow.
240 - Check control serial before clearing window, prevents looping tunnel
241 setup in some instances.
242 - Implement named access-lists which may be applied to a session
243 either via Filter-Id RADIUS responses, or using the CLI.
244 - Drop ip address from LOG.
245 - autothrottle: revise parsing; ignore lcp:interface-config avpairs
246 which don't start with serv[ice-policy].
249 * Sat Nov 20 2004 Brendan O'Dea <bod@optusnet.com.au> 2.0.8
250 - Ignore gateway address in Framed-Route (from Jonathan McDowell).
251 - Don't route Framed-IP-Address if contained in a Framed-Route.
252 - Call sessionshutdown() when a tunnel is dropped rather than
253 sessionkill() to ensure that RADIUS stop records are sent.
254 - Cleanup: make a bunch of global functions/variables static.
255 - Remove reference to old -a command line argument.
256 - Add l2tpns(8) and nsctl(8) manpages from Jonathan McDowell.
257 - Add startup-config(5) manpage.
258 - Revise nsctl to allow arbitrary strings/args to be passed to plugins.
259 - Add snoopctl, throttlectl plugins.
260 - Fix deletion from linked list.
261 - Allow LCP re-negotiation after connection completes (thanks Yuri).
263 * Mon Nov 15 2004 Brendan O'Dea <bod@optusnet.com.au> 2.0.7
264 - Fix socket creation in host_unreachable() (thanks to Bjørn Augestad)
265 - Don't assume BGP peer sends back negotiated hold time, pick smallest
267 * Thu Nov 11 2004 Brendan O'Dea <bod@optusnet.com.au> 2.0.6
268 - Make BGP keepalive/hold time configurable
269 - Revise BGP config to use "router bgp AS" syntax (requires libcli >= 1.8.2)
271 * Tue Nov 9 2004 Brendan O'Dea <bod@optusnet.com.au> 2.0.5
272 - Handle routing properly in lone-master case
273 - Fix intercepts: don't double-snoop throttled customers, ensure
274 byte/packet counts are only updated once
275 - Add a callback to allow plugins to fetch values from the running config
277 * Mon Nov 8 2004 Brendan O'Dea <bod@optusnet.com.au> 2.0.4
278 - Added setrxspeed plugin
279 - Added peer_address config option
280 - Rename wrapper macros to LOG()/LOG_HEX(), use p->log() in plugins
281 - Replace some PPP{PAP,CHAP} magic numebrs with constants
282 - Nak asyncmap (unless == 0)
283 - Bundle ConfigRej options
284 - Clean up initlcp handling
286 * Wed Nov 3 2004 Brendan O'Dea <bod@optusnet.com.au> 2.0.3
287 - Added support for hidden AVPs by Robert Clark
288 - l2tpns-chap-response.patch from Robert Clark
289 - Merge l2tpns-config-hostname.patch from Robert Clark
290 - l2tpns-dont-timeshift-unidirectional-traffic.patch from Robert Clark - Dump accounting data if cin OR cout is non-zero
291 - Don't write accounting files if no accounting dir is set - Yuri
292 - Fix checking for mmap success
293 - Renegotiate MRU - Yuri
294 - Take LCP ConfigReq length from the packet length field - Yuri
295 - Hostname set via command line not config
296 - Make number of throttle buckets configurable
297 - Shared_malloc returns NULL on failure
299 - Unfsck 4->8 indenting change
300 - Use 2 seperate u16 values for throttle rate in/out
301 - Defer adding radius fds to the select loop until become_master
303 * Thu Sep 02 2004 David Parrish <david@dparrish.com> 2.0.2
304 - Combined LCP patches from Iain and Yuri. This should allow Windows 2k/XP
305 clients to connect, as well Linksys DSL modems.
306 - Apply patch to fix -v option from Juergen Kammer.
307 - Makefile fix from Juergen Kammer to not overwrite existing config files on
309 - Configurable radius port patch from Juergen Kammer.
310 - Send my_address if no bind_address when doing IPCP
311 - Write pid file if filename is set
312 - Add startup script and monitor script from Yuri
313 - Some logging correctness fixes from Iain Wade
314 - Add support for LCP Ident and CallBack (rejection only) from Yuri
315 - Initiate LCP if not attempted by the client, or in renegotiation - Yuri
316 - Indentation and style cleanups
317 - Per-user upload and download throttle rates - Yuri
318 - Make autothrottle.so understand cisco lcp:interface-config - Yuri
319 - Show filter stats in show session - Yuri
320 - Cleanup from Michael to change sid to unique_id
321 - Add plugin to remove domain name from auth requests
322 - Add .spec file for RPM generation
324 * Tue Jul 13 2004 Brendan O'Dea <bod@optusnet.com.au> 2.0.1
325 - Update INSTALL, Docs/manual.html documentation.
326 - Add INTERNALS documentation.
327 - Add lock_pages option.
328 - TerminateAck fix from Yuri
329 - Adject cli_loop args for libcli 1.8.0
330 - Allow for backward compatabity in C_PING packets
331 - Don't send RADIUS stop messages from sessionshutdown when called from
334 - Fix for LASTSEEN breakage: don't do anything in the CLI other than
335 flag changes to be made by the parent.
336 - Split out master parts from cluster_check_master() into cluster_check_slaves().
337 - Set hostname in CLI prompt.
338 - Make cluster_hb_interval work; include interval/timeout in heartbeats
339 so that a change on the master is propagated immediately to the slaves.
340 - Use fast heartbeats when there are slaves not up to date.
341 - Ensure basetime of shut down master is set to zero (prevent delayed election).
342 - Fix radius session leak on IPCP timeout.
343 - Fix some off-by-one errors in tunnel/session loops.
344 - Add "limp along" fix for when a slave drops temporarily from the mcast group.
345 - Rename l2tpns.cfg as startup-config to match CONFIGFILE.
346 - Update cli callbacks to work with libcli 1.6.
347 This supports privileged and unprivileged commands, as well as a configuration
349 - Add help for all cli commands.
350 - Add "show version" command.
351 - Fix uptime counter display.
352 - Fix nasty bug where cluster basetime can be set to 0 when sending initial
354 - Don't rmmod ip_conntrack, as this can take a lot of time.
355 - Re-order logging in routeset such that the action is given before any error.
356 - Use the correct gateway address when deleting routes.
357 - Remove any routes when address changes.
358 - Require authentication if telnet from remote ip.
359 - Require enable password always.
360 - Return error if show pool done on slave.
361 - We MUST immediately exit if we're the wrong master!
363 * Wed Jun 23 2004 David Parrish <david@dparrish.com> 2.0.0
365 - Completely replace active/standby clustering with a new peer-to-peer
366 clustering method which allows much greater throughput and is a lot more fault
368 - Add internal tbf implementation for throttling without relying on tc and
370 - Add support for iBGP and eBGP to advertise routes
371 - Add cli commands "show cluster", "show bgp", "show ipcache", "show throttle",
372 "show tbf", "suspend bgp", "restart bgp", "show user"
373 - Interception destination must be set per-user
374 - If SMP machine, allow use of SCHED_FIFO, which should improve performance
375 - Added config option to send GARP at startup
376 - Added plugin_become_master and plugin_new_session_master plugin hooks
377 - Remove useless sessionsendarp(). This isn't needed now that we are using TUN
379 - ICMP rate limiting so not every unreachable packet is replied with an ICMP
381 - mangle table is not required on anything but the cluster master, so slaves
382 will drop the mangle table and attempt to unload the ip_conntrack module
383 - Statically assigned IP addresses (by Radius) work now
384 - Add -d command-line flag to detach and become a daemon
385 - Configuration file is now "/etc/l2tpns/startup-config"
386 - Reduced MIN_IP_SIZE to 0x19 to stop a pile of Short IP warnings
387 - Resend initial IPCP request until it's acknowleged by the client
388 - Better radius session cleanup logic
389 - Many miscellaenous bugfixes and performance enhancements
390 - Thanks to Michael O'Reilly and Brendan O'Dea for most of these new features
392 * Mon May 24 2004 David Parrish <david@dparrish.com> 1.2.0
393 - Fix SEGFAULT in garden module
394 - Use multiple radius sockets to allow more concurrent authentication requests
395 - Add username parameter to "show users" command
396 - Fix counting tunnel rx errors as tunnel tx errors
397 - Add "show throttle" command
398 - Add gcc __attribute__ to logging functions
399 - Fix warnings shown by __attribute__
400 - Make sure regular cleanup happens regularly under high load
401 - Add variable cleanup_interval for changing cleanup interval
402 - Add support for reading more than one packet per fd in each processing loop
403 - This is configurable with the multi_read_count variable
404 - Remove segv handler so core dumps can happen
405 - Use nonblocking sockets
406 - Increase tun queue length
407 - Fix minimum length of IP packets
408 - Remove per-packet plugin hooks (they are slow)
409 - Don't drop session if no free RADIUS
410 - Don't expire more than 1000 sessions per cleanup interval
411 - Remove -a and -c command-line options. They don't work anyway
412 - Don't require file: in log_filename
413 - Bump version to 1.2.0
414 - Check return code when throttling users
416 * Mon Apr 5 2004 David Parrish <david@dparrish.com> 1.1.1
417 - Don't mention configure anymore, it's not used
418 - Added the autosnoop and autothrottle modules
419 - Don't default to using a htb for the class root
421 * Fri Mar 5 2004 David Parrish <david@dparrish.com> 1.1.0
422 - Change all strcpy() calls to strncpy() to avoid buffer overflow potential
423 - Add ICMP host unreachable support
424 - Logging to syslog if log_file = "syslog:facility"
425 - Now requires libcli 1.5
426 - All configuration moves to a config structure
427 - Ability to modify and write config on the fly through command-line interface
428 - Config file support is removed, and now handled by the cli
429 - Show hostname in cli prompt
430 - Keep current state type for tunnels
431 - Add uptime command do CLI, which also shows real-time bandwidth utilisation
432 - Add goodbye command to cluster master, which forces droppping a slave
433 - Cache IP address allocation, so that reconnecting users get the same address
434 - Fix tunnel resend timeouts, so that dead tunnels will be cleaned up
435 - Allocate tunnels and radius without using a linked list which had issues
436 - Fix some off-by-one errors in tunnel and session and radius arrays
437 - Save and reload ip address pool when dieing
438 - Check version and size of reloaded data when restarting
439 - Remove plugin_config support
440 - Remove old support for TBF which didn't work anyway. HTB is required to do throttling now.
441 - Add COPYING and Changes files