1 * Wed Apr 5 2006 Brendan O'Dea <bod@optus.net> 2.1.17
2 - Fix IPCP length test to allow Terminate-Request (4 bytes).
3 - Send nsctl responses back using the correct source address (thanks ltd).
4 - Similarly set the source for DAE responses; use bind_address when
5 handling forwarded packets on the master.
7 * Thu Feb 23 2006 Brendan O'Dea <bod@optus.net> 2.1.16
8 - Send configured magic-no in LCP EchoReq when LCP is opened.
9 - Correct addition of single IP to pool (Jonathan Yarden).
10 - Ensure session changes from LCP ConfigReq/ConfigNak are sent to cluster.
11 - Verify that RADIUS packets come from a configured server (Jonathan Yarden).
12 - Avoid endless loop in processipcp, processipv6cp.
13 - Additional length checks in processlcp.
14 - Allow peer to request a new magic-number, or to disable magic-numbers.
15 - Decrease ip_conntrack_tcp_timeout_established to 5hrs (table filling).
17 * Mon Dec 19 2005 Brendan O'Dea <bod@optus.net> 2.1.15
19 - Reduce logging of LCP EchoReply packets.
20 - Break LCP configure loop with shutdown.
21 - Limit value of MRU of 1492 (rfc2516).
22 - Tun MTU should be MRU (not MRU+4).
23 - Add Service-Type/Framed-Protocol to RADIUS records (Paul Martin).
25 * Fri Dec 9 2005 Brendan O'Dea <bod@optus.net> 2.1.14
26 - Run PLUGIN_RADIUS_ACCOUNT for Start records.
28 * Wed Dec 7 2005 Brendan O'Dea <bod@optus.net> 2.1.13
29 - Add test/ping-sweep.
30 - Apply spec changes from Charlie Brady: use License header, change
31 BuildRoot to include username.
32 - Fix IPCP negotiation of secondary DNS server, reported by Jon Morby.
33 - Clean up sessiont, removing some unused fields.
34 - Remove unused "MAC" config type.
35 - Reject unknown/unconfigured protocols on the master.
36 - Sanity check MRU before using in ppp_code_rej, protoreject.
38 * Thu Nov 17 2005 Brendan O'Dea <bod@optus.net> 2.1.12
39 - Set MTU on tunnel interface so the kernel will re-fragment large
40 packets to within MRU.
41 - Fix TCP checksum recalc.
42 - NAK silly MRU values from peer.
44 * Mon Nov 14 2005 Brendan O'Dea <bod@optus.net> 2.1.11
45 - Fix fragment handling in ip_filter.
46 - Exclude counter when comparing filter rules.
48 * Sat Nov 5 2005 Brendan O'Dea <bod@optus.net> 2.1.10
49 - Add scripts/l2tpns-capture.
50 - Fix LCP Echo frequency.
51 - Add Framed-Route entries to RADIUS records.
52 - Reset restart counters correctly.
53 - Reset timers on sending ConfigReq.
54 - Only send one RADIUS Start record, even if IPCP is restarted.
56 * Tue Oct 11 2005 Brendan O'Dea <bod@optus.net> 2.1.9
57 - Fix Calling-Station-Id in RADIUS accounting records (Slobodan Tomic).
58 - Fix RADIUS authentication on DAE responses.
59 - Don't send tunnel HELLO when there are pending control messages.
60 - Move plugin_radius_reset from *ctl to auto* plugins.
61 - Add Cisco-AVPairs to RADIUS accounting records via plugin_radius_account.
63 * Mon Sep 19 2005 Brendan O'Dea <bod@optus.net> 2.1.8
64 - Move code from signal handlers into mainloop, avoiding a race
65 condition when forking CLI.
67 * Fri Sep 16 2005 Brendan O'Dea <bod@optus.net> 2.1.7
68 - This time, for sure: really fix Protocol-Reject.
70 * Fri Sep 16 2005 Brendan O'Dea <bod@optus.net> 2.1.6
71 - Any traffic on a tunnel resets lastrec, not just control messages.
72 - Use a unique identifier for LCP.
73 - Fix Code-Reject/Protocol-Reject.
74 - Add l2tp_mtu configuration option, used to define MRU, MSS.
75 - Adjust TCP MSS options in SYN and SYN,ACK packets to avoid
76 fragmentation of tcp packets.
78 * Sat Sep 3 2005 Brendan O'Dea <bod@optus.net> 2.1.5
79 - Avoid Code-Reject loop.
80 - Increase size of PPP buffers to MAXETHER.
81 - Bug fixes for CLI ringbuffer and tunnel HELLO from Yuri.
82 - Restart rather than halt BGP on receipt of CEASE (Dominique Rousseau).
83 - Add cluster_mcast_ttl option to allow a cluster to span multiple
84 subnets (suggested by Tim Devries).
86 * Mon Aug 29 2005 Brendan O'Dea <bod@optus.net> 2.1.4
87 - Drop level of "Unexpected CHAP message" log.
88 - Fix parsing of ProtocolRej (allow 1 or two byte protocols).
89 - Handle rejection of MRU negotiation by peer.
90 - Use local hostname for tunnel in SCCRP (Alex Kiernan).
92 * Wed Aug 17 2005 Brendan O'Dea <bod@optus.net> 2.1.3
93 - Fail IPCP negotiation only on ConfigRej of IP-Address.
95 * Wed Aug 10 2005 Brendan O'Dea <bod@optus.net> 2.1.2
96 - Clear cluster_master on election so that slaves will accept a new master.
97 - Provide more comments/defaults in etc/startup-config.default.
98 - Add DAE support (PoD/CoA) from Vladislav Bjelic.
99 - Clean up new warnings from gcc 4.0.
100 - Replace flags used for LCP/IPCP with state machine.
101 - Include Acct-Session-Time in interim records.
102 - Fix DAE vector, generateload (Alex Kiernan).
103 - Replace RSA MD5 with public domain version.
105 * Tue Jun 14 2005 Brendan O'Dea <bod@optusnet.com.au> 2.1.1
106 - Add missing newline to backtrace macro.
107 - Don't send CDN for each session when shutting down tunnels (this is
109 - Move tunnel shutdown from SIGQUIT signal handler to be run once from
110 still_busy(). Reject new tunnels/sessions while in the process of
112 - Clarify usage of shutdown signals in documentation.
113 - Always initialise PRNG.
114 - Sanity check length of random_vector.
115 - Fix segv in unhide_value.
116 - Ping new master when we get C_MASTER and delay next election to allow
117 the unicast limp-along code to kick in if required.
119 * Sun Jun 5 2005 Brendan O'Dea <bod@optusnet.com.au> 2.1.0
120 - Add IPv6 support from Jonathan McDowell.
121 - Add CHAP support from Jordan Hrycaj.
122 - Add interim accounting support from Vladislav Bjelic.
123 - Negotiate MRU, default 1458 to avoid fragmentation.
124 - Sanity check that cluster_send_session is not called from a child
126 - Use bounds-checking lookup functions for string constants.
127 - Add enum for RADIUS codes.
128 - Make "call_" prefix implict in CSTAT() macro.
129 - Fix some format string problems.
130 - Remove "save_state" option. Not maintained anymore; use clustering
131 to retain state across restarts.
132 - Simplify AVP unhiding code.
133 - Add optional "username" parameter to ungarden control, allowing the
134 username to be reset before going online.
135 - Add result/error codes and message to StopCCN when shutting down tunnels.
136 - Add result/error codes to CDN when shutting down sessions. Sends 2/7
137 (general error, try another LNS) when out of IP addresses, and 3
138 (adminstrative) for everything else (suggestion from Chris Gates).
139 - Use cli_error() for error messages and help.
140 - Don't use LOG() macro in initdata() until the config struct has been
141 allocated (uses config->debug).
142 - Initialise log_stream to stderr to catch errors before the config file
144 - Make "show running-config" a privileged command (contains clear text
146 - Add sessionctl plugin to provide drop/kill via nsctl.
147 - New config option: allow_duplicate_users which determines whether
148 or not to kill older sessions with the same username.
149 - Fix byte counters in accounting records.
150 - Add Acct-Output-Gigawords, Acct-Input-Gigawords attributes to RADIUS
152 - Fix icmp host unreachable to use router address.
153 - Include endpoint address in accounting dump files.
154 - Convert mainloop to use epoll rather than select.
155 - Add note about fragmentation in Docs/manual.html, and a sample
156 iptables rule for MSS clamping.
158 + Show session open time in "show session"/"show user" detailed output.
159 + Have slaves with BGP configured drop BGP on receipt of a shutdown
160 signal, but hang about for an additional 5s to process any remaining
162 + Run regular_cleanups after processing the results of the select,
163 looking at a sufficient slice of each table to ensure that all
164 entries are examined at least once per second.
166 + Cluster changes from Michael, intended to prevent a stray master
167 from trashing a cluster:
168 = Ignore heartbeats from peers claiming to be the master before the
169 timeout on the old master has expired.
170 = A master receiving a stray heartbeat sends a unicast HB back, which
171 should cause the rogue to die due to the tie-breaker code.
172 = Keep probing the master for late heartbeats.
173 = Drop BGP as soon as we become master with the minumum required peers.
174 = Any PING seen from a master forces an election (rather than just
175 where basetime is zero).
176 = A slave which receives a LASTSEEN message (presumably a restarted
177 master) sends back new message type, C_MASTER which indicates the
178 address of the current master.
179 + New config option: cluster_master_min_adv which determines the minimum
180 number of up to date slaves required before the master will drop
183 + Add handling of "throttle=N" RADIUS attributes.
184 + Fix RADIUS indexing (should have 16K entries with 64 sockets).
186 + Fix leak in session freelist when initial RADIUS session allocation
189 + Add a Cisco-Avpair with intercept details to RADIUS Start/Stop
192 + Only send RADIUS stop record in sessionshutdown when there's an ip address.
193 + Reset .die on master takeover (so that dying sessions don't have to
194 hang around until the new master has the same uptime as the old one).
195 + Update .last_packet in cluster_handle_bytes only when there have
196 been bytes received from the modem (dead sessions were having the
197 idle timeout reset by stray packets).
199 + Ensure that sessionkill is not called on an unopened session (borks
201 + Bump MAXSESSION to 60K.
202 + Fix off-by-one errors in session/tunnel initialisation and
203 sessiont <-> sessionidt functions.
204 + Use session[s].opened consistently when checking for in-use sessions
205 (rather than session[s].tunnel).
206 + Use <= cluster_highest_sessionid rather than < MAXSESSION in a
208 + Don't kill a whole tunnel if we're out of sessions.
209 + Change session[s].ip to 0 if set from RADIUS to 255.255.255.254;
210 avoids the possibility that it will be interpreted as a valid IP
212 + Avoid a possible buffer overflow in processpap.
213 + Kill session if authentication was rejected.
215 + More DoS prevention: add packet_limit option to apply a hard limit
216 to downstream packets per session.
217 + Fix "clear counters".
218 + Log "Accepted connection to CLI" at 4 when connection is from localhost
219 to reduce noise in logs.
220 + Show time since last counter reset in "show counters".
222 + Throttle outgoing LASTSEEN packets to at most one per second for a
225 * Fri Dec 17 2004 Brendan O'Dea <bod@optusnet.com.au> 2.0.13
226 - Better cluster master collision resolution: keep a counter of state
227 changes, propagated in the heartbeats; the master with the highest #
228 of changes (that has kept in contact with the LAC through the
230 - Skip newlines in ringbuffer messages to CLI.
231 - Drop "Session N is closing" message level to 4; don't process PPPIP
232 packets in this state.
233 - Use gzip --best for man pages, include pid_file in sample
234 startup-config (from Jonathan's Debian package patches).
235 - Read multiple packets off cluster_sockfd as well as udpfd, tunfd in an
236 attempt to avoid losing the cluster in high load (DoS) conditions.
237 - Add counters for select_called, multi_read_used and multi_read_exceeded.
239 - Retain counters of shutdown sessions to dump once per minute.
240 - Use standard uintN_t types for portability.
242 * Wed Dec 1 2004 Brendan O'Dea <bod@optusnet.com.au> 2.0.12
243 - The "This time, for sure!" release.
244 - Fix throttlectl plugin argument parsing.
246 * Wed Dec 1 2004 Brendan O'Dea <bod@optusnet.com.au> 2.0.11
247 - Don't send a RADIUS start record when ungardening on shutdown.
249 * Wed Dec 1 2004 Brendan O'Dea <bod@optusnet.com.au> 2.0.10
250 - Fix byte ordering of LCP header length (thanks Yuri).
251 - Increase ip_conntrack_max due to dropped packets.
253 * Tue Nov 30 2004 Brendan O'Dea <bod@optusnet.com.au> 2.0.9
254 - Revise CCP, send ConfigReq once only.
255 - Don't copy the old buffer into Config{Nak,Rej} LCP responses (oops);
256 add length checks when appending.
257 - Do copy the identifier from the request and update length.
258 - Have makeppp print a backtrace on overflow.
259 - Check control serial before clearing window, prevents looping tunnel
260 setup in some instances.
261 - Implement named access-lists which may be applied to a session
262 either via Filter-Id RADIUS responses, or using the CLI.
263 - Drop ip address from LOG.
264 - autothrottle: revise parsing; ignore lcp:interface-config avpairs
265 which don't start with serv[ice-policy].
268 * Sat Nov 20 2004 Brendan O'Dea <bod@optusnet.com.au> 2.0.8
269 - Ignore gateway address in Framed-Route (from Jonathan McDowell).
270 - Don't route Framed-IP-Address if contained in a Framed-Route.
271 - Call sessionshutdown() when a tunnel is dropped rather than
272 sessionkill() to ensure that RADIUS stop records are sent.
273 - Cleanup: make a bunch of global functions/variables static.
274 - Remove reference to old -a command line argument.
275 - Add l2tpns(8) and nsctl(8) manpages from Jonathan McDowell.
276 - Add startup-config(5) manpage.
277 - Revise nsctl to allow arbitrary strings/args to be passed to plugins.
278 - Add snoopctl, throttlectl plugins.
279 - Fix deletion from linked list.
280 - Allow LCP re-negotiation after connection completes (thanks Yuri).
282 * Mon Nov 15 2004 Brendan O'Dea <bod@optusnet.com.au> 2.0.7
283 - Fix socket creation in host_unreachable() (thanks to Bjørn Augestad)
284 - Don't assume BGP peer sends back negotiated hold time, pick smallest
286 * Thu Nov 11 2004 Brendan O'Dea <bod@optusnet.com.au> 2.0.6
287 - Make BGP keepalive/hold time configurable
288 - Revise BGP config to use "router bgp AS" syntax (requires libcli >= 1.8.2)
290 * Tue Nov 9 2004 Brendan O'Dea <bod@optusnet.com.au> 2.0.5
291 - Handle routing properly in lone-master case
292 - Fix intercepts: don't double-snoop throttled customers, ensure
293 byte/packet counts are only updated once
294 - Add a callback to allow plugins to fetch values from the running config
296 * Mon Nov 8 2004 Brendan O'Dea <bod@optusnet.com.au> 2.0.4
297 - Added setrxspeed plugin
298 - Added peer_address config option
299 - Rename wrapper macros to LOG()/LOG_HEX(), use p->log() in plugins
300 - Replace some PPP{PAP,CHAP} magic numebrs with constants
301 - Nak asyncmap (unless == 0)
302 - Bundle ConfigRej options
303 - Clean up initlcp handling
305 * Wed Nov 3 2004 Brendan O'Dea <bod@optusnet.com.au> 2.0.3
306 - Added support for hidden AVPs by Robert Clark
307 - l2tpns-chap-response.patch from Robert Clark
308 - Merge l2tpns-config-hostname.patch from Robert Clark
309 - l2tpns-dont-timeshift-unidirectional-traffic.patch from Robert Clark - Dump accounting data if cin OR cout is non-zero
310 - Don't write accounting files if no accounting dir is set - Yuri
311 - Fix checking for mmap success
312 - Renegotiate MRU - Yuri
313 - Take LCP ConfigReq length from the packet length field - Yuri
314 - Hostname set via command line not config
315 - Make number of throttle buckets configurable
316 - Shared_malloc returns NULL on failure
318 - Unfsck 4->8 indenting change
319 - Use 2 seperate u16 values for throttle rate in/out
320 - Defer adding radius fds to the select loop until become_master
322 * Thu Sep 02 2004 David Parrish <david@dparrish.com> 2.0.2
323 - Combined LCP patches from Iain and Yuri. This should allow Windows 2k/XP
324 clients to connect, as well Linksys DSL modems.
325 - Apply patch to fix -v option from Juergen Kammer.
326 - Makefile fix from Juergen Kammer to not overwrite existing config files on
328 - Configurable radius port patch from Juergen Kammer.
329 - Send my_address if no bind_address when doing IPCP
330 - Write pid file if filename is set
331 - Add startup script and monitor script from Yuri
332 - Some logging correctness fixes from Iain Wade
333 - Add support for LCP Ident and CallBack (rejection only) from Yuri
334 - Initiate LCP if not attempted by the client, or in renegotiation - Yuri
335 - Indentation and style cleanups
336 - Per-user upload and download throttle rates - Yuri
337 - Make autothrottle.so understand cisco lcp:interface-config - Yuri
338 - Show filter stats in show session - Yuri
339 - Cleanup from Michael to change sid to unique_id
340 - Add plugin to remove domain name from auth requests
341 - Add .spec file for RPM generation
343 * Tue Jul 13 2004 Brendan O'Dea <bod@optusnet.com.au> 2.0.1
344 - Update INSTALL, Docs/manual.html documentation.
345 - Add INTERNALS documentation.
346 - Add lock_pages option.
347 - TerminateAck fix from Yuri
348 - Adject cli_loop args for libcli 1.8.0
349 - Allow for backward compatabity in C_PING packets
350 - Don't send RADIUS stop messages from sessionshutdown when called from
353 - Fix for LASTSEEN breakage: don't do anything in the CLI other than
354 flag changes to be made by the parent.
355 - Split out master parts from cluster_check_master() into cluster_check_slaves().
356 - Set hostname in CLI prompt.
357 - Make cluster_hb_interval work; include interval/timeout in heartbeats
358 so that a change on the master is propagated immediately to the slaves.
359 - Use fast heartbeats when there are slaves not up to date.
360 - Ensure basetime of shut down master is set to zero (prevent delayed election).
361 - Fix radius session leak on IPCP timeout.
362 - Fix some off-by-one errors in tunnel/session loops.
363 - Add "limp along" fix for when a slave drops temporarily from the mcast group.
364 - Rename l2tpns.cfg as startup-config to match CONFIGFILE.
365 - Update cli callbacks to work with libcli 1.6.
366 This supports privileged and unprivileged commands, as well as a configuration
368 - Add help for all cli commands.
369 - Add "show version" command.
370 - Fix uptime counter display.
371 - Fix nasty bug where cluster basetime can be set to 0 when sending initial
373 - Don't rmmod ip_conntrack, as this can take a lot of time.
374 - Re-order logging in routeset such that the action is given before any error.
375 - Use the correct gateway address when deleting routes.
376 - Remove any routes when address changes.
377 - Require authentication if telnet from remote ip.
378 - Require enable password always.
379 - Return error if show pool done on slave.
380 - We MUST immediately exit if we're the wrong master!
382 * Wed Jun 23 2004 David Parrish <david@dparrish.com> 2.0.0
384 - Completely replace active/standby clustering with a new peer-to-peer
385 clustering method which allows much greater throughput and is a lot more fault
387 - Add internal tbf implementation for throttling without relying on tc and
389 - Add support for iBGP and eBGP to advertise routes
390 - Add cli commands "show cluster", "show bgp", "show ipcache", "show throttle",
391 "show tbf", "suspend bgp", "restart bgp", "show user"
392 - Interception destination must be set per-user
393 - If SMP machine, allow use of SCHED_FIFO, which should improve performance
394 - Added config option to send GARP at startup
395 - Added plugin_become_master and plugin_new_session_master plugin hooks
396 - Remove useless sessionsendarp(). This isn't needed now that we are using TUN
398 - ICMP rate limiting so not every unreachable packet is replied with an ICMP
400 - mangle table is not required on anything but the cluster master, so slaves
401 will drop the mangle table and attempt to unload the ip_conntrack module
402 - Statically assigned IP addresses (by Radius) work now
403 - Add -d command-line flag to detach and become a daemon
404 - Configuration file is now "/etc/l2tpns/startup-config"
405 - Reduced MIN_IP_SIZE to 0x19 to stop a pile of Short IP warnings
406 - Resend initial IPCP request until it's acknowleged by the client
407 - Better radius session cleanup logic
408 - Many miscellaenous bugfixes and performance enhancements
409 - Thanks to Michael O'Reilly and Brendan O'Dea for most of these new features
411 * Mon May 24 2004 David Parrish <david@dparrish.com> 1.2.0
412 - Fix SEGFAULT in garden module
413 - Use multiple radius sockets to allow more concurrent authentication requests
414 - Add username parameter to "show users" command
415 - Fix counting tunnel rx errors as tunnel tx errors
416 - Add "show throttle" command
417 - Add gcc __attribute__ to logging functions
418 - Fix warnings shown by __attribute__
419 - Make sure regular cleanup happens regularly under high load
420 - Add variable cleanup_interval for changing cleanup interval
421 - Add support for reading more than one packet per fd in each processing loop
422 - This is configurable with the multi_read_count variable
423 - Remove segv handler so core dumps can happen
424 - Use nonblocking sockets
425 - Increase tun queue length
426 - Fix minimum length of IP packets
427 - Remove per-packet plugin hooks (they are slow)
428 - Don't drop session if no free RADIUS
429 - Don't expire more than 1000 sessions per cleanup interval
430 - Remove -a and -c command-line options. They don't work anyway
431 - Don't require file: in log_filename
432 - Bump version to 1.2.0
433 - Check return code when throttling users
435 * Mon Apr 5 2004 David Parrish <david@dparrish.com> 1.1.1
436 - Don't mention configure anymore, it's not used
437 - Added the autosnoop and autothrottle modules
438 - Don't default to using a htb for the class root
440 * Fri Mar 5 2004 David Parrish <david@dparrish.com> 1.1.0
441 - Change all strcpy() calls to strncpy() to avoid buffer overflow potential
442 - Add ICMP host unreachable support
443 - Logging to syslog if log_file = "syslog:facility"
444 - Now requires libcli 1.5
445 - All configuration moves to a config structure
446 - Ability to modify and write config on the fly through command-line interface
447 - Config file support is removed, and now handled by the cli
448 - Show hostname in cli prompt
449 - Keep current state type for tunnels
450 - Add uptime command do CLI, which also shows real-time bandwidth utilisation
451 - Add goodbye command to cluster master, which forces droppping a slave
452 - Cache IP address allocation, so that reconnecting users get the same address
453 - Fix tunnel resend timeouts, so that dead tunnels will be cleaned up
454 - Allocate tunnels and radius without using a linked list which had issues
455 - Fix some off-by-one errors in tunnel and session and radius arrays
456 - Save and reload ip address pool when dieing
457 - Check version and size of reloaded data when restarting
458 - Remove plugin_config support
459 - Remove old support for TBF which didn't work anyway. HTB is required to do throttling now.
460 - Add COPYING and Changes files