1 * Thu Jun 2 2005 Brendan O'Dea <bod@optusnet.com.au> 2.1.0
2 - Add IPv6 support from Jonathan McDowell.
3 - Add CHAP support from Jordan Hrycaj.
4 - Add interim accounting support from Vladislav Bjelic.
5 - Negotiate MRU, default 1458 to avoid fragmentation.
6 - Sanity check that cluster_send_session is not called from a child
8 - Throttle outgoing LASTSEEN packets to at most one per second for a
10 - More DoS prevention: add packet_limit option to apply a hard limit
11 to downstream packets per session.
12 - Use bounds-checking lookup functions for string constants.
13 - Add enum for RADIUS codes.
14 - Make "call_" prefix implict in CSTAT() macro.
15 - Fix some format string problems.
16 - Fix "clear counters".
17 - Log "Accepted connection to CLI" at 4 when connection is from localhost
18 to reduce noise in logs.
19 - Show time since last counter reset in "show counters".
20 - Remove "save_state" option. Not maintained anymore; use clustering
21 to retain state across restarts.
22 - Ensure that sessionkill is not called on an unopened session (borks
24 - Bump MAXSESSION to 60K.
25 - Fix off-by-one errors in session/tunnel initialisation and
26 sessiont <-> sessionidt functions.
27 - Use session[s].opened consistently when checking for in-use sessions
28 (rather than session[s].tunnel).
29 - Use <= cluster_highest_sessionid rather than < MAXSESSION in a
31 - Don't kill a whole tunnel if we're out of sessions.
32 - Change session[s].ip to 0 if set from RADIUS to 255.255.255.254;
33 avoids the possibility that it will be interpreted as a valid IP
35 - Avoid a possible buffer overflow in processpap.
36 - Kill session if authentication was rejected.
37 - Simplify AVP unhiding code.
38 - Add optional "username" parameter to ungarden control, allowing the
39 username to be reset before going online.
40 - Add result/error codes and message to StopCCN when shutting down tunnels.
41 - Add result/error codes to CDN when shutting down sessions. Sends 2/7
42 (general error, try another LNS) when out of IP addresses, and 3
43 (adminstrative) for everything else (suggestion from Chris Gates).
44 - Only send RADIUS stop record in sessionshutdown when there's an ip address.
45 - Reset .die on master takeover (so that dying sessions don't have to
46 hang around until the new master has the same uptime as the old one).
47 - Update .last_packet in cluster_handle_bytes only when there have
48 been bytes received from the modem (dead sessions were having the
49 idle timeout reset by stray packets).
50 - Use cli_error() for error messages and help.
51 - Add a Cisco-Avpair with intercept details to RADIUS Start/Stop
53 - Don't use LOG() macro in initdata() until the config struct has been
54 allocated (uses config->debug).
55 - Initialise log_stream to stderr to catch errors before the config file
57 - Fix leak in session freelist when initial RADIUS session allocation
59 - Make "show running-config" a privileged command (contains clear text
61 - Add sessionctl plugin to provide drop/kill via nsctl.
62 - Add handling of "throttle=N" RADIUS attributes.
63 - Fix RADIUS indexing (should have 16K entries with 64 sockets).
64 - Cluster changes from Michael, intended to prevent a stray master
65 from trashing a cluster:
66 + Ignore heartbeats from peers claiming to be the master before the
67 timeout on the old master has expired.
68 + A master receiving a stray heartbeat sends a unicast HB back, which
69 should cause the rogue to die due to the tie-breaker code.
70 + Keep probing the master for late heartbeats.
71 + Drop BGP as soon as we become master with the minumum required peers.
72 + Any PING seen from a master forces an election (rather than just
73 where basetime is zero).
74 + A slave which receives a LASTSEEN message (presumably a restarted
75 master) sends back new message type, C_MASTER which indicates the
76 address of the current master.
77 - New config option: cluster_master_min_adv which determines the minimum
78 number of up to date slaves required before the master will drop
80 - New config option: allow_duplicate_users which determines whether
81 or not to kill older sessions with the same username.
82 - Show session open time in "show session"/"show user" detailed output.
83 - Have slaves with BGP configured drop BGP on receipt of a shutdown
84 signal, but hang about for an additional 5s to process any remaining
86 - Run regular_cleanups after processing the results of the select,
87 looking at a sufficient slice of each table to ensure that all
88 entries are examined at least once per second.
90 * Fri Dec 17 2004 Brendan O'Dea <bod@optusnet.com.au> 2.0.13
91 - Better cluster master collision resolution: keep a counter of state
92 changes, propagated in the heartbeats; the master with the highest #
93 of changes (that has kept in contact with the LAC through the
95 - Skip newlines in ringbuffer messages to CLI.
96 - Drop "Session N is closing" message level to 4; don't process PPPIP
97 packets in this state.
98 - Use gzip --best for man pages, include pid_file in sample
99 startup-config (from Jonathan's Debian package patches).
100 - Read multiple packets off cluster_sockfd as well as udpfd, tunfd in an
101 attempt to avoid losing the cluster in high load (DoS) conditions.
102 - Add counters for select_called, multi_read_used and multi_read_exceeded.
104 - Retain counters of shutdown sessions to dump once per minute.
105 - Use standard uintN_t types for portability.
107 * Wed Dec 1 2004 Brendan O'Dea <bod@optusnet.com.au> 2.0.12
108 - The "This time, for sure!" release.
109 - Fix throttlectl plugin argument parsing.
111 * Wed Dec 1 2004 Brendan O'Dea <bod@optusnet.com.au> 2.0.11
112 - Don't send a RADIUS start record when ungardening on shutdown.
114 * Wed Dec 1 2004 Brendan O'Dea <bod@optusnet.com.au> 2.0.10
115 - Fix byte ordering of LCP header length (thanks Yuri).
116 - Increase ip_conntrack_max due to dropped packets.
118 * Tue Nov 30 2004 Brendan O'Dea <bod@optusnet.com.au> 2.0.9
119 - Revise CCP, send ConfigReq once only.
120 - Don't copy the old buffer into Config{Nak,Rej} LCP responses (oops);
121 add length checks when appending.
122 - Do copy the identifier from the request and update length.
123 - Have makeppp print a backtrace on overflow.
124 - Check control serial before clearing window, prevents looping tunnel
125 setup in some instances.
126 - Implement named access-lists which may be applied to a session
127 either via Filter-Id RADIUS responses, or using the CLI.
128 - Drop ip address from LOG.
129 - autothrottle: revise parsing; ignore lcp:interface-config avpairs
130 which don't start with serv[ice-policy].
133 * Sat Nov 20 2004 Brendan O'Dea <bod@optusnet.com.au> 2.0.8
134 - Ignore gateway address in Framed-Route (from Jonathan McDowell).
135 - Don't route Framed-IP-Address if contained in a Framed-Route.
136 - Call sessionshutdown() when a tunnel is dropped rather than
137 sessionkill() to ensure that RADIUS stop records are sent.
138 - Cleanup: make a bunch of global functions/variables static.
139 - Remove reference to old -a command line argument.
140 - Add l2tpns(8) and nsctl(8) manpages from Jonathan McDowell.
141 - Add startup-config(5) manpage.
142 - Revise nsctl to allow arbitrary strings/args to be passed to plugins.
143 - Add snoopctl, throttlectl plugins.
144 - Fix deletion from linked list.
145 - Allow LCP re-negotiation after connection completes (thanks Yuri).
147 * Mon Nov 15 2004 Brendan O'Dea <bod@optusnet.com.au> 2.0.7
148 - Fix socket creation in host_unreachable() (thanks to Bjørn Augestad)
149 - Don't assume BGP peer sends back negotiated hold time, pick smallest
151 * Thu Nov 11 2004 Brendan O'Dea <bod@optusnet.com.au> 2.0.6
152 - Make BGP keepalive/hold time configurable
153 - Revise BGP config to use "router bgp AS" syntax (requires libcli >= 1.8.2)
155 * Tue Nov 9 2004 Brendan O'Dea <bod@optusnet.com.au> 2.0.5
156 - Handle routing properly in lone-master case
157 - Fix intercepts: don't double-snoop throttled customers, ensure
158 byte/packet counts are only updated once
159 - Add a callback to allow plugins to fetch values from the running config
161 * Mon Nov 8 2004 Brendan O'Dea <bod@optusnet.com.au> 2.0.4
162 - Added setrxspeed plugin
163 - Added peer_address config option
164 - Rename wrapper macros to LOG()/LOG_HEX(), use p->log() in plugins
165 - Replace some PPP{PAP,CHAP} magic numebrs with constants
166 - Nak asyncmap (unless == 0)
167 - Bundle ConfigRej options
168 - Clean up initlcp handling
170 * Wed Nov 3 2004 Brendan O'Dea <bod@optusnet.com.au> 2.0.3
171 - Added support for hidden AVPs by Robert Clark
172 - l2tpns-chap-response.patch from Robert Clark
173 - Merge l2tpns-config-hostname.patch from Robert Clark
174 - l2tpns-dont-timeshift-unidirectional-traffic.patch from Robert Clark - Dump accounting data if cin OR cout is non-zero
175 - Don't write accounting files if no accounting dir is set - Yuri
176 - Fix checking for mmap success
177 - Renegotiate MRU - Yuri
178 - Take LCP ConfigReq length from the packet length field - Yuri
179 - Hostname set via command line not config
180 - Make number of throttle buckets configurable
181 - Shared_malloc returns NULL on failure
183 - Unfsck 4->8 indenting change
184 - Use 2 seperate u16 values for throttle rate in/out
185 - Defer adding radius fds to the select loop until become_master
187 * Thu Sep 02 2004 David Parrish <david@dparrish.com> 2.0.2
188 - Combined LCP patches from Iain and Yuri. This should allow Windows 2k/XP
189 clients to connect, as well Linksys DSL modems.
190 - Apply patch to fix -v option from Juergen Kammer.
191 - Makefile fix from Juergen Kammer to not overwrite existing config files on
193 - Configurable radius port patch from Juergen Kammer.
194 - Send my_address if no bind_address when doing IPCP
195 - Write pid file if filename is set
196 - Add startup script and monitor script from Yuri
197 - Some logging correctness fixes from Iain Wade
198 - Add support for LCP Ident and CallBack (rejection only) from Yuri
199 - Initiate LCP if not attempted by the client, or in renegotiation - Yuri
200 - Indentation and style cleanups
201 - Per-user upload and download throttle rates - Yuri
202 - Make autothrottle.so understand cisco lcp:interface-config - Yuri
203 - Show filter stats in show session - Yuri
204 - Cleanup from Michael to change sid to unique_id
205 - Add plugin to remove domain name from auth requests
206 - Add .spec file for RPM generation
208 * Tue Jul 13 2004 Brendan O'Dea <bod@optusnet.com.au> 2.0.1
209 - Update INSTALL, Docs/manual.html documentation.
210 - Add INTERNALS documentation.
211 - Add lock_pages option.
212 - TerminateAck fix from Yuri
213 - Adject cli_loop args for libcli 1.8.0
214 - Allow for backward compatabity in C_PING packets
215 - Don't send RADIUS stop messages from sessionshutdown when called from
218 - Fix for LASTSEEN breakage: don't do anything in the CLI other than
219 flag changes to be made by the parent.
220 - Split out master parts from cluster_check_master() into cluster_check_slaves().
221 - Set hostname in CLI prompt.
222 - Make cluster_hb_interval work; include interval/timeout in heartbeats
223 so that a change on the master is propagated immediately to the slaves.
224 - Use fast heartbeats when there are slaves not up to date.
225 - Ensure basetime of shut down master is set to zero (prevent delayed election).
226 - Fix radius session leak on IPCP timeout.
227 - Fix some off-by-one errors in tunnel/session loops.
228 - Add "limp along" fix for when a slave drops temporarily from the mcast group.
229 - Rename l2tpns.cfg as startup-config to match CONFIGFILE.
230 - Update cli callbacks to work with libcli 1.6.
231 This supports privileged and unprivileged commands, as well as a configuration
233 - Add help for all cli commands.
234 - Add "show version" command.
235 - Fix uptime counter display.
236 - Fix nasty bug where cluster basetime can be set to 0 when sending initial
238 - Don't rmmod ip_conntrack, as this can take a lot of time.
239 - Re-order logging in routeset such that the action is given before any error.
240 - Use the correct gateway address when deleting routes.
241 - Remove any routes when address changes.
242 - Require authentication if telnet from remote ip.
243 - Require enable password always.
244 - Return error if show pool done on slave.
245 - We MUST immediately exit if we're the wrong master!
247 * Wed Jun 23 2004 David Parrish <david@dparrish.com> 2.0.0
249 - Completely replace active/standby clustering with a new peer-to-peer
250 clustering method which allows much greater throughput and is a lot more fault
252 - Add internal tbf implementation for throttling without relying on tc and
254 - Add support for iBGP and eBGP to advertise routes
255 - Add cli commands "show cluster", "show bgp", "show ipcache", "show throttle",
256 "show tbf", "suspend bgp", "restart bgp", "show user"
257 - Interception destination must be set per-user
258 - If SMP machine, allow use of SCHED_FIFO, which should improve performance
259 - Added config option to send GARP at startup
260 - Added plugin_become_master and plugin_new_session_master plugin hooks
261 - Remove useless sessionsendarp(). This isn't needed now that we are using TUN
263 - ICMP rate limiting so not every unreachable packet is replied with an ICMP
265 - mangle table is not required on anything but the cluster master, so slaves
266 will drop the mangle table and attempt to unload the ip_conntrack module
267 - Statically assigned IP addresses (by Radius) work now
268 - Add -d command-line flag to detach and become a daemon
269 - Configuration file is now "/etc/l2tpns/startup-config"
270 - Reduced MIN_IP_SIZE to 0x19 to stop a pile of Short IP warnings
271 - Resend initial IPCP request until it's acknowleged by the client
272 - Better radius session cleanup logic
273 - Many miscellaenous bugfixes and performance enhancements
274 - Thanks to Michael O'Reilly and Brendan O'Dea for most of these new features
276 * Mon May 24 2004 David Parrish <david@dparrish.com> 1.2.0
277 - Fix SEGFAULT in garden module
278 - Use multiple radius sockets to allow more concurrent authentication requests
279 - Add username parameter to "show users" command
280 - Fix counting tunnel rx errors as tunnel tx errors
281 - Add "show throttle" command
282 - Add gcc __attribute__ to logging functions
283 - Fix warnings shown by __attribute__
284 - Make sure regular cleanup happens regularly under high load
285 - Add variable cleanup_interval for changing cleanup interval
286 - Add support for reading more than one packet per fd in each processing loop
287 - This is configurable with the multi_read_count variable
288 - Remove segv handler so core dumps can happen
289 - Use nonblocking sockets
290 - Increase tun queue length
291 - Fix minimum length of IP packets
292 - Remove per-packet plugin hooks (they are slow)
293 - Don't drop session if no free RADIUS
294 - Don't expire more than 1000 sessions per cleanup interval
295 - Remove -a and -c command-line options. They don't work anyway
296 - Don't require file: in log_filename
297 - Bump version to 1.2.0
298 - Check return code when throttling users
300 * Mon Apr 5 2004 David Parrish <david@dparrish.com> 1.1.1
301 - Don't mention configure anymore, it's not used
302 - Added the autosnoop and autothrottle modules
303 - Don't default to using a htb for the class root
305 * Fri Mar 5 2004 David Parrish <david@dparrish.com> 1.1.0
306 - Change all strcpy() calls to strncpy() to avoid buffer overflow potential
307 - Add ICMP host unreachable support
308 - Logging to syslog if log_file = "syslog:facility"
309 - Now requires libcli 1.5
310 - All configuration moves to a config structure
311 - Ability to modify and write config on the fly through command-line interface
312 - Config file support is removed, and now handled by the cli
313 - Show hostname in cli prompt
314 - Keep current state type for tunnels
315 - Add uptime command do CLI, which also shows real-time bandwidth utilisation
316 - Add goodbye command to cluster master, which forces droppping a slave
317 - Cache IP address allocation, so that reconnecting users get the same address
318 - Fix tunnel resend timeouts, so that dead tunnels will be cleaned up
319 - Allocate tunnels and radius without using a linked list which had issues
320 - Fix some off-by-one errors in tunnel and session and radius arrays
321 - Save and reload ip address pool when dieing
322 - Check version and size of reloaded data when restarting
323 - Remove plugin_config support
324 - Remove old support for TBF which didn't work anyway. HTB is required to do throttling now.
325 - Add COPYING and Changes files