.TH ACCEL-PPP.CONF 5 "6 October 2010"
.SH NAME
.B accel-ppp.conf
- ACCEL-PPP VPN daemon configuration
.SH DESCRIPTION
.BR accel-pppd (8)
reads options from this file, usually
.IR /etc/accel-ppp.conf
.TP
Configuration file consists of sections in form:
.TP
[section1]
.br
name1=val1
.br
name2=val2
.br
name3
.TP
[section2]
.br
 ....
.br
.SH SECTIONS
.TP
.SH [modules]
containes list of modules to load
.TP
.BI log_file
This is logging target which logs messages to files. It support per-session/per-user features.
.TP
.BI log_tcp
This is logging target which logs messages over TCP/IP.
.TP
.BI log_pgsql
This is logging target which logs messages to PostgreSQL.
.TP
.BI pptp
.br
PPTP controlling connection handling module.
.TP
.BI pppoe
.br
PPPoE discovery stage handling module.
.TP
.BI auth_pap
PAP authentication module.
.TP
.BI auth_chap
CHAP (md5) authentication module.
.TP
.BI auth_mschap_v1
Microsoft CHAP (version 1) authentication module.
.TP
.BI auth_mschap_v2
Microsoft CHAP (version 2) authentication module.
.TP
.BI radius
.br
RADIUS interaction module.
.TP
.BI ippool
.br
IP address assigning module.
.TP
.BI sigchld
Helper module to manage child processes, required by pppd_compat
.TP
.BI pppd_compat
This module starts pppd compatible ip-up/ip-down scripts and ip-change to handle RADIUS CoA request.
.TP
.SH [core]
Configuration of core module
.TP
.BI "log-error=" path
Path to file for core module error logging.
.TP
.BI "thread-count=" n
number of working threads, optimal - number of processors/cores
.TP
.SH [ppp]
.br
PPP module configuration.
.TP
.BI "verbose=" n
If n is not zero ppp module will produce verbose logging.
.TP
.BI "min-mtu=" n
Minimum acceptable MTU. If client will try to negotiate less then specified MTU then it will be NAKed or disconnected if rejects greater MTU.
.TP
.BI "mtu=" n
MTU which will be negotiated if client's MRU will be not acceptable.
.TP
.BI "mru=" n
Prefered MRU.
.TP
.BI "ccp=" n
Disable CCP negotiation if this parameter is zero.
.TP
.TP
.BI "sid-case=" upper|lower
Specifies in which case generate session identifier (default lower).
.TP
.BI "check-ip=" 0|1
Specifies whether accel-ppp should check if IP already assigned to other ppp interface (default 0).
.TP
.BI "single-session=" replace|deny
Specifies whether accel-ppp should control sessions count.
.br
If this option is absent session count control is turned off.
If this option is 
.B replace
then accel-ppp will terminate first session when second is authorized.
If this option is 
.B deny
then accel-ppp will deny second session authorization.
.TP
.BI "mppe=" require|prefere|deny
Specifies mppe negotioation preference.
.br
.B require
- ask client for mppe, if it rejects drop connection
.br
.B prefere
- ask client for mppe, if it rejects don't fail.
.br
.B deny
- deny mppe.
.br
Default behavior - don't ask client for mppe, but allow it if client wants.
Please note that RADIUS may override this option by MS-MPPE-Encryption-Policy attribute.
.TP
.SH [lcp]
.br
PPP LCP module configuration
.TP
.BI "echo-interval=" n
If this option is given and greater then 0 then lcp module will send echo-request every 
.B n
seconds.
.TP
.BI "echo-failure=" n
Specifies maximum number of echo-requests may be sent without valid echo-reply, if exceeds connection will be terminated.
.TP
.SH [dns]
.TP
.BI "dns1=" x.x.x.x
Specifies primary DNS to be sent to peer.
.TP
.BI "dns2=" x.x.x.x
Specifies secondary DNS to be sent to peer.
.TP
.SH [client-ip-range]
You have to explicitly specify range of ip address from which clients can connect to server in form:
.br
.B x.x.x.x/mask
(for example 10.0.0.0/8)
.br
.B x.x.x.x-y
(for example 10.0.0.1-254)
.TP
.SH [pptp]
.br
Configuration of PPTP module.
.TP
.BI "bind=" x.x.x.x
If this option is given then pptp server will bind to specified IP address.
.TP
.BI "verbose=" n
If this option is given and 
.B n
is greater of zero then pptp module will produce verbose logging.
.TP
.BI "echo-interval=" n
If this option is given and greater then zero then pptp module will send echo-request every 
.B n
seconds.
.TP
.BI "echo-failure=" n
Specifies maximum number of echo-requests may be sent without valid echo-reply, if exceeds connection will be terminated.
.TP
.BI "timeout=" n
Timeout waiting reply from client in seconds (default 5).
.TP
.SH [pppoe]
.br
Configuration of PPPoE module.
.TP
.BI "interface=" ethX
Specifies interface name to listen/send discovery packets. You may specify multiple
.B interface
options.
.TP
.BI "ac-name=" ac-name
Specifies AC-Name tag value. If absent tag will not be sent.
.TP
.BI "service-name=" service-name
Specifies Service-Name to respond. If absent any Service-Name is acceptable and client's Service-Name will be sent back.
.TP
.BI "pado-delay=" delay[,delay1:count1[,delay2:count2[,...]]]
Specifies delays (also in condition of connection count) to send PADO (ms).
Last delay in list may be -1 which means don't accept new connections.
List have to be sorted by count key.
.TP
.BI "mac-filter=" filename,type
Specifies mac-filter filename and type, type maybe 
.B allow
or
.B deny
.TP
.BI "ifname-in-sid=" called-sid|calling-sid|both
Specifies that interface name should be present in Called-Station-ID or in Calling-Station-ID or in both attributes.
.TP
.BI "verbose=" n
If this option is given and 
.B n
is greater of zero then pppoe module will produce verbose logging.
.TP
.SH [l2tp]
.br
Configuration of L2TP module.
.TP
.BI "bind=" x.x.x.x
Specifies IP address to bind.
.TP
.BI "host-name=" string
This name will be sent to clients in Host-Name attribute.
.TP
.BI "hello-interval=" n
Specifies interval (in seconds) to send Hello control message. Its used for keep alive connection. If peer will not respond to Hello connection will be terminated.
.TP
.BI "timeout=" n
Specifies timeout (in seconds) to wait peer completes tunnel and session negotiation.
.TP
.BI "rtimeout=" n
Specifies timeout (in seconds) to wait message acknowledge, if elapsed message retransmition will be performed.
.TP
.BI "retransmit=" n
Specifies maximum number of message retransmission, if exceeds connection will be terminated.
.TP
.BI "verbose=" n
If this option is given and 
.B n
is greater of zero then l2tp module will produce verbose logging.
.TP
.SH [radius]
.br
Configuration of RADIUS module.
.TP
.BI "nas-identifier=" identifier
Specifies value to send to RADIUS server in NAS-Identifier attribute and to be matched in DM/CoA requests.
.TP
.BI "nas-ip-address=" x.x.x.x
Specifies value to send to RADIUS server in NAS-IP-Address attribute and to be matched in DM/CoA requests.
Also DM/CoA server will bind to that address.
.TP
.BI "gw-ip-address=" x.x.x.x
Specifies address to use as local address of ppp interfaces if Framed-IP-Address received from RADIUS server.
.TP
.BI "auth-server=" x.x.x.x:port,secret
Specifies IP address, port and secret of authentication RADIUS server.
.TP
.BI "acct-server=" x.x.x.x:port,secret
Specifies IP address, port and secret of accounting RADIUS server.
.TP
.BI "dae-server=" x.x.x.x:port,secret
Specifies IP address, port to bind and secret for Dynamic Authorization Extension server (DM/CoA).
.TP
.BI "dm_coa_secret=" secret (deprecated, use dae-server instead)
Specifies secret to use in DM/CoA communication.
.TP
.BI "acct-interim-interval=" n
Specifies interval in seconds to send accounting information (may be overriden by radius Acct-Interim-Interval attribute)
.TP
.BI "verbose=" n
If this option is given and 
.B n
is greater of zero then radius module will produce verbose logging.
.TP
.BI "interim-verbose=" n
If this option is given and 
.B n
is greater of zero then radius module will produce verbose logging of interim radius packets.
.TP
.BI "timeout=" n
Timeout to wait response from server (sec) 
.TP
.BI "max-try=" n
Specifies number of tries to send Access-Request/Accounting-Request queries.
.TP
.BI "acct-timeout=" n
Specifies timeout of accounting interim update.
.TP
.SH [log]
.br
Configuration of log and log_file modules.
.TP
.BI "log-file=" file
Path to file to write general log.
.TP
.BI "log-emerg=" file
Path to file to write emergency messages.
.TP
.BI "log-fail-file=" file
Path to file to write authentication failed session log.
.TP
.BI "log-tcp=" x.x.x.x:port
Send logs to specified host.
.TP
.BI "copy=" n
If this options is given and greater then zero logging engine will duplicate session log in general log.
(Useful when per-session/per-user logs are not used)
.TP
.BI "per-session-dir=" dir
Directory for session logs. If specified each session will be logged separately to file which name is unique session identifier.
.TP
.BI "per-user-dir=" dir
Directory for user logs. If specified all sessions of same user will be logged to file which name is user name.
.TP
.BI "per-session=" n
If specified and n is greater then zero each session of same user will be logger separately to directory specified by "per-user-dir" 
and subdirectory which name is user name and to file which name os unique session identifier.
.TP
.BI "level=" n
Specifies log level which values are:
.br
.B 0
turn off all logging
.br
.B 1
log only error messages
.br
.B 2
log error and warning messages
.br
.B 3
log error, warning and minimum information messages (use this level in conjuction with verbose option of other modules if you need verbose logging)
.br
.B 4
log error, warning and full information messages (use this level in conjuction with verbose option of other modules if you need verbose logging)
.br
.B 5
log all messages including debug messages
.TP
.SH [log-pgsql]
.br
Configuration of log_pgsql module.
.TP
.BI "conninfo=" conninfo
Conninfo to connect to PostgreSQL server.
.TP
.BI "log-table=" table
Table to send log messages. Table must contain following field:
.br
.B timestamp
timestamp
.br
.B username
text
.br
.B sessionid
text
.br
.B msg
text
.TP
.SH [pppd_compat]
.br
Configuration of pppd_compat module.
.TP
.BI "ip-pre-up=" file
Path to ip-pre-up script which is executed before ppp interface comes up, useful to setup firewall rules before any traffic can pass through the interface.
.TP
.BI "ip-up=" file
Path to ip-up script which is executed when ppp interfaces is completly configured and started.
.TP
.BI "ip-down=" file
Path to ip-down script which is executed when session is about to terminate.
.TP
.BI "ip-change=" file
Path to ip-change script which is executed for RADIUS CoA handling.
.TP
.BI "radattr=" prefix
Prefix of radattr files (for example /var/run/radattr, resulting files will be /var/run/radattr.pppX)
.TP
.BI "verbose=" n
If specified and greated then zero pppd_module will produce verbose logging.
.TP
.SH [ip-pool]
.br
Configuration of ippool module.
.TP
.BI "gw-ip-address=" x.x.x.x
Specifies single IP address to be used as local address of ppp interfaces.
.TP
.BI "gw=" range
Specifies range of local address of ppp interfaces if form:
.br
.B x.x.x.x/mask
(for example 10.0.0.0/8)
.br
.B x.x.x.x-y
(for example 10.0.0.1-254)
.TP
.BI "tunnel=" range
Specifies range of remote address of ppp interfaces if form:
.br
.B x.x.x.x/mask
.br
.B x.x.x.x-y
.TP
.BI "x.x.x.x/mask or x.x.x.x-y"
Also specifies range of remote address of ppp interfaces.