Fix: loopback protection

[l2tpns.git] / Docs / startup-config.5

diff --git a/Docs/startup-config.5 b/Docs/startup-config.5
index 35527f3..77af484 100644 (file)
--- a/Docs/startup-config.5
+++ b/Docs/startup-config.5
@@ -2,7 +2,7 @@
 .de Id
 .ds Dt \\$4 \\$5
 ..
 .de Id
 .ds Dt \\$4 \\$5
 ..

-.Id $Id: startup-config.5,v 1.1 2004/11/17 15:08:19 bodea Exp $
+.Id $Id: startup-config.5,v 1.18 2006-07-01 12:40:17 bodea Exp $

 .TH STARTUP-CONFIG 5 "\*(Dt" L2TPNS "File Formats and Conventions"
 .SH NAME
 startup\-config \- configuration file for l2tpns
 .TH STARTUP-CONFIG 5 "\*(Dt" L2TPNS "File Formats and Conventions"
 .SH NAME
 startup\-config \- configuration file for l2tpns


@@ -51,6 +51,11 @@ is any one of the syslog logging facilities, such as
 If set, the process id will be written to the specified file.  The
 value must be an absolute path.
 .TP
 If set, the process id will be written to the specified file.  The
 value must be an absolute path.
 .TP

+.B random_device
+Path to random data source (default
+.BR /dev/urandom ).
+Use "" to use the rand() library function.
+.TP

 .B l2tp_secret
 The secret used by
 .B l2tpns
 .B l2tp_secret
 The secret used by
 .B l2tpns


@@ -58,25 +63,31 @@ for authenticating tunnel request.  Must be the same as the LAC, or
 authentication will fail.  Only actually be used if the LAC requests
 authentication.
 .TP
 authentication will fail.  Only actually be used if the LAC requests
 authentication.
 .TP

-.BR primary_dns , " secondary_dns"
+.B l2tp_mtu
+MTU of interface for L2TP traffic (default: 1500).  Used to set link
+MRU and adjust TCP MSS.
+.TP
+.B ppp_restart_time
+Restart timer for PPP protocol negotiation in seconds (default: 3).
+.TP
+.B ppp_max_configure
+Number of configure requests to send before giving up (default: 10).
+.TP
+.B ppp_max_failure
+Number of Configure-Nak requests to send before sending a
+Configure-Reject (default: 5).
+.TP
+.BR primary_dns ", " secondary_dns

 Whenever a PPP connection is established, DNS servers will be sent to the
 user, both a primary and a secondary.  If either is set to 0.0.0.0, then that
 one will not be sent.
 .TP
 Whenever a PPP connection is established, DNS servers will be sent to the
 user, both a primary and a secondary.  If either is set to 0.0.0.0, then that
 one will not be sent.
 .TP

-.B save_state
-When
-.B l2tpns
-receives a STGTERM it will write out its current ip_address_pool,
-session and tunnel tables to disk prior to exiting to be re-loaded at
-startup.  The validity of this data is obviously quite short and the
-intent is to allow an sessions to be retained over a software upgrade.
-.TP
-.BR primary_radius , " secondary_radius"
+.BR primary_radius ", " secondary_radius

 Sets the RADIUS servers used for both authentication and accounting. 
 If the primary server does not respond, then the secondary RADIUS
 server will be tried.
 .TP
 Sets the RADIUS servers used for both authentication and accounting. 
 If the primary server does not respond, then the secondary RADIUS
 server will be tried.
 .TP

-.BR primary_radius_port , " secondary_radius_port"
+.BR primary_radius_port ", " secondary_radius_port

 Sets the authentication ports for the primary and secondary RADIUS
 servers.  The accounting port is one more than the authentication
 port.  If no ports are given, authentication defaults to 1645, and
 Sets the authentication ports for the primary and secondary RADIUS
 servers.  The accounting port is one more than the authentication
 port.  If no ports are given, authentication defaults to 1645, and


@@ -90,9 +101,36 @@ and a
 .B Stop
 record when the session is closed.
 .TP
 .B Stop
 record when the session is closed.
 .TP

+.B radius_interim
+If
+.B radius_accounting
+is on, defines the interval between sending of RADIUS interim
+accounting records (in seconds).
+.TP

 .B radius_secret
 Secret to be used in RADIUS packets.
 .TP
 .B radius_secret
 Secret to be used in RADIUS packets.
 .TP

+.B radius_authtypes
+A comma separated list of supported RADIUS authentication methods
+("pap" or "chap"), in order of preference (default "pap").
+.TP
+.B radius_dae_port
+Port for DAE RADIUS (Packet of Death/Disconnect, Change of Authorization)
+requests (default: 3799).
+.TP
+.BR radius_bind_min ", " radius_bind_max
+Define a port range in which to bind sockets used to send and receive
+RADIUS packets.  Must be at least RADIUS_FDS (64) wide.  Simplifies
+firewalling of RADIUS ports (default: dynamically assigned).
+.TP
+.B allow_duplicate_users
+Allow multiple logins with the same username.  If false (the default),
+any prior session with the same username will be dropped when a new
+session is established.
+.TP
+.B guest_account
+Allow multiple logins matching this specific username.
+.TP

 .B bind_address
 When the tun interface is created, it is assigned the address
 specified here.  If no address is given, 1.1.1.1 is used.  Packets
 .B bind_address
 When the tun interface is created, it is assigned the address
 specified here.  If no address is given, 1.1.1.1 is used.  Packets


@@ -105,7 +143,7 @@ Address to send to clients as the default gateway.
 .B send_garp
 Determines whether or not to send a gratuitous ARP for the
 .B bind_address
 .B send_garp
 Determines whether or not to send a gratuitous ARP for the
 .B bind_address

-when the server is ready to handle traffic (default:  true).  This
+when the server is ready to handle traffic (default: true).  This

 setting is ignored if BGP is configured.
 .TP
 .B throttle_speed
 setting is ignored if BGP is configured.
 .TP
 .B throttle_speed


@@ -119,21 +157,13 @@ session requires two buckets (in and out).
 If set to a directory, then every 5 minutes the current usage for
 every connected use will be dumped to a file in this directory.
 .TP
 If set to a directory, then every 5 minutes the current usage for
 every connected use will be dumped to a file in this directory.
 .TP

-.B setuid
-After starting up and binding the interface, change UID to this.  This
-doesn't work properly.
-.TP

 .B dump_speed
 If set to true, then the current bandwidth utilization will be logged
 every second.  Even if this is disabled, you can see this information
 by running the
 .B dump_speed
 If set to true, then the current bandwidth utilization will be logged
 every second.  Even if this is disabled, you can see this information
 by running the

-.B
-uptime
+.B uptime

 command on the CLI.
 .TP
 command on the CLI.
 .TP

-.B cleanup_interval
-Interval between regular cleanups (in seconds).
-.TP

 .B multi_read_count
 Number of packets to read off each of the UDP and TUN fds when
 returned as readable by select (default: 10).  Avoids incurring the
 .B multi_read_count
 Number of packets to read off each of the UDP and TUN fds when
 returned as readable by select (default: 10).  Avoids incurring the


@@ -160,12 +190,21 @@ process in memory.
 .B icmp_rate
 Maximum number of host unreachable ICMP packets to send per second.
 .TP
 .B icmp_rate
 Maximum number of host unreachable ICMP packets to send per second.
 .TP

+.B packet_limit
+Maximum number of packets of downstream traffic to be handled each
+tenth of a second per session.  If zero, no limit is applied (default: 
+0).  Intended as a DoS prevention mechanism and not a general
+throttling control (packets are dropped, not queued).
+.TP

 .B cluster_address
 Multicast cluster address (default: 239.192.13.13).
 .TP
 .B cluster_interface
 Interface for cluster packets (default: eth0).
 .TP
 .B cluster_address
 Multicast cluster address (default: 239.192.13.13).
 .TP
 .B cluster_interface
 Interface for cluster packets (default: eth0).
 .TP

+.B cluster_mcast_ttl
+TTL for multicast packets (default: 1).
+.TP

 .B cluster_hb_interval
 Interval in tenths of a second between cluster heartbeat/pings.
 .TP
 .B cluster_hb_interval
 Interval in tenths of a second between cluster heartbeat/pings.
 .TP


@@ -173,6 +212,15 @@ Interval in tenths of a second between cluster heartbeat/pings.
 Cluster heartbeat timeout in tenths of a second.  A new master will be
 elected when this interval has been passed without seeing a heartbeat
 from the master.
 Cluster heartbeat timeout in tenths of a second.  A new master will be
 elected when this interval has been passed without seeing a heartbeat
 from the master.

+.TP
+.B cluster_master_min_adv
+Determines the minumum number of up to date slaves required before the
+master will drop routes (default: 1).
+.TP
+.B ipv6_prefix
+Enable negotiation of IPv6.  This forms the the first 64 bits of the
+client allocated address.  The remaining 64 come from the allocated
+IPv4 address and 4 bytes of 0s.

 .RE
 .SS BGP ROUTING
 The routing configuration section is entered by the command
 .RE
 .SS BGP ROUTING
 The routing configuration section is entered by the command


@@ -199,5 +247,121 @@ is the remote AS number and
 .IR keepalive ,
 .I hold
 are the timer values in seconds.
 .IR keepalive ,
 .I hold
 are the timer values in seconds.

+.SS NAMED ACCESS LISTS
+Named access lists may be defined with either of
+.IP
+.BI "ip access\-list standard " name
+.br
+.BI "ip access\-list extended " name
+.PP
+Subsequent lines starting with
+.B permit
+or
+.B deny
+define the body of the access\-list.
+.PP
+.B Standard Access Lists
+.RS 4n
+Standard access lists are defined with:
+.IP
+.RB { permit | deny }
+.IR source " [" dest ]
+.PP
+Where
+.I source
+and
+.I dest
+specify IP matches using one of:
+.IP
+.I address
+.I wildard
+.br
+.B host
+.I address
+.br
+.B any
+.PP
+.I address
+and
+.I wildard
+are in dotted-quad notation, bits in the
+.I wildard
+indicate which address bits in
+.I address
+are relevant to the match (0 = exact match; 1 = don't care).
+.PP
+The shorthand
+.RB ' host
+.IR address '
+is equivalent to
+.RI ' address
+.BR 0.0.0.0 ';
+.RB ' any '
+to
+.RB ' 0.0.0.0
+.BR 255.255.255.255 '.
+.RE
+.PP
+.B Extended Access Lists
+.RS 4n
+Extended access lists are defined with:
+.IP
+.RB { permit | deny }
+.I proto
+.IR source " [" ports "] " dest " [" ports "] [" flags ]
+.PP
+Where
+.I proto
+is one of
+.BR ip ,
+.B tcp
+or
+.BR udp ,
+and
+.I source
+and
+.I dest
+are as described above for standard lists.
+.PP
+For TCP and UDP matches, source and destination may be optionally
+followed by a
+.I ports
+specification:
+.IP
+.RB { eq | neq | gt | lt }
+.I port
+.br
+.B
+range
+.I from to
+.PP
+.I flags
+may be one of:
+.RS
+.HP
+.RB { match\-any | match\-all }
+.RB { + | - }{ fin | syn | rst | psh | ack | urg }
+\&...
+.br
+Match packets with any or all of the tcp flags set
+.RB ( + )
+or clear
+.RB ( - ).
+.HP
+.B established
+.br
+Match "established" TCP connections:  packets with
+.B RST
+or
+.B ACK
+set, and
+.B SYN
+clear.
+.HP
+.B fragments
+.br
+Match IP fragments.  May not be specified on rules with layer 4
+matches.
+.RE

 .SH SEE ALSO
 .BR l2tpns (8)
 .SH SEE ALSO
 .BR l2tpns (8)