.\" $NetBSD: pppoectl.8,v 1.11 2002/04/14 11:41:42 martin Exp $ .\" .\" Copyright (C) 1997 by Joerg Wunsch, Dresden .\" All rights reserved. .\" .\" Redistribution and use in source and binary forms, with or without .\" modification, are permitted provided that the following conditions .\" are met: .\" 1. Redistributions of source code must retain the above copyright .\" notice, this list of conditions and the following disclaimer. .\" 2. Redistributions in binary form must reproduce the above copyright .\" notice, this list of conditions and the following disclaimer in the .\" documentation and/or other materials provided with the distribution. .\" .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS .\" OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED .\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE .\" DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, .\" INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES .\" (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR .\" SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, .\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING .\" IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE .\" POSSIBILITY OF SUCH DAMAGE. .\" .\" From: spppcontrol.1,v 1.1.1.1 1997/10/11 11:30:30 joerg Exp .\" .\" $Id: pppoectl.8,v 1.11 2002/04/14 11:41:42 martin Exp $ .\" .\" last edit-date: [Thu Aug 31 10:47:33 2000] .\" .Dd December 11, 2001 .Os .Dt PPPOECTL 8 .Sh NAME .Nm pppoectl , .Nm ipppcontrol .Nd "display or set parameters for an pppoe or isdn ppp (ippp) interface" .Sh SYNOPSIS .Nm .Op Fl v .Ar ifname .Op Ar parameter Ns Op \&= Ns Ar value .Op Ar ... .Pp .Nm pppoectl .Fl e Ar ethernet-ifname .Op Fl s Ar service-name .Op Fl a Ar access-concentrator-name .Op Fl d .Op Fl n Ar 1 \&| 2 .Ar ifname .Sh DESCRIPTION There are two basic modes of operation: configuring security related parameters and attaching a PPPoE interface to its ethernet interface, optionally passing in additional parameters for the PPPoE encapsulation. .Pp The later usage is indicated by the presence of the .Fl e option, which takes the name of the ethernet interface as its argument. .Pp .Bl -tag -width indent .It Fl e specifies the ethernet interface used to communicate with the access concentrator (typically via a DSL modem). .It Fl a specifies the name of the access concentrator. .It Fl s specifies the name of the service connected to. .It Fl d dump the current connection state information (this parameter is typically used alone, for informational purposes, not during interface configuration). .It Fl n Ar 1 \&| 2 print the IP address of the primary or secondary DNS name server for this PPP connection. This is only available if DNS query is enabled, see .Ar query-dns . .El .Pp Typically, not both the access concentrator name and the service name are specified. .Pp The .Xr ippp 4 or the .Xr pppoe 4 drivers require a number of additional arguments or optional parameters besides the settings that can be adjusted with .Xr ifconfig 8 . These are things like authentication protocol parameters, but also other tunable configuration variables. The .Nm utility can be used to display the current settings, or adjust these parameters as required. .Pp For whatever intent .Nm is being called, at least the parameter .Ar ifname needs to be specified, naming the interface for which the settings are to be performed or displayed. Use .Xr ifconfig 8 or .Xr netstat 1 to see which interfaces are available. .Pp If no other parameter is given, .Nm will just list the current settings for .Ar ifname and exit. The reported settings include the current PPP phase the interface is in, which can be one of the names .Em dead , .Em establish , .Em authenticate , .Em network , or .Em terminate . If an authentication protocol is configured for the interface, the name of the protocol to be used, as well as the system name to be used or expected will be displayed, plus any possible options to the authentication protocol if applicable. Note that the authentication secrets (sometimes also called .Em keys ) are not being returned by the underlying system call, and are thus not displayed. .Pp If any additional parameter is supplied, superuser privileges are required, and the command works in .Ql set mode. This is normally done quietly, unless the option .Fl v is also enabled, which will cause a final printout of the settings as described above once all other actions have been taken. Use of this mode will be rejected if the interface is currently in any other phase than .Em dead . Note that you can force an interface into .Em dead phase by calling .Xr ifconfig 8 with the parameter .Ql down . .Pp The currently supported parameters include: .Bl -tag -width xxxxxxxxxxxxxxxxxxxxxxxxx .It Ar authproto Ns \&= Ns Em protoname Set both his and my authentication protocol to .Em protoname . The protocol name can be one of .Ql chap , .Ql pap , or .Ql none . In the latter case, the use of an authentication protocol will be turned off for the named interface. This has the side-effect of clearing the other authentication-related parameters for this interface as well (i. e., system name and authentication secret will be forgotten). .It Ar myauthproto Ns \&= Ns Em protoname Same as above, but only for my end of the link. I. e., this is the protocol when remote is authenticator, and I am the peer required to authenticate. .It Ar hisauthproto Ns \&= Ns Em protoname Same as above, but only for his end of the link. .It Ar myauthname Ns \&= Ns Em name Set my system name for the authentication protocol. .It Ar hisauthname Ns \&= Ns Em name Set his system name for the authentication protocol. For CHAP, this will only be used as a hint, causing a warning message if remote did supply a different name. For PAP, it's the name remote must use to authenticate himself (in connection with his secret). .It Ar myauthsecret Ns \&= Ns Em secret Set my secret (key, password) for use in the authentication phase. For CHAP, this will be used to compute the response hash value, based on remote's challenge. For PAP, it will be transmitted as plaintext together with the system name. Don't forget to quote the secrets from the shell if they contain shell metacharacters (or whitespace). .It Ar myauthkey Ns \&= Ns Em secret Same as above. .It Ar hisauthsecret Ns \&= Ns Em secret Same as above, to be used if we are authenticator and the remote peer needs to authenticate. .It Ar hisauthkey Ns \&= Ns Em secret Same as above. .It Ar callin Require remote to authenticate himself only when he's calling in, but not when we are caller. This is required for some peers that do not implement the authentication protocols symmetrically (like Ascend routers, for example). .It Ar always The opposite of .Ar callin . Require remote to always authenticate, regardless of which side is placing the call. This is the default, and will not be explicitly displayed in .Ql list mode. .It Ar norechallenge Only meaningful with CHAP. Do not re-challenge peer once the initial CHAP handshake was successful. Used to work around broken peer implementations that can't grok being re-challenged once the connection is up. .It Ar rechallenge With CHAP, send re-challenges at random intervals while the connection is in network phase. (The intervals are currently in the range of 300 through approximately 800 seconds.) This is the default, and will not be explicitly displayed in .Ql list mode. .It Ar idle-timeout Ns \&= Ns Em idle-seconds For services that are charged by connection time the interface can optionally disconnect after a configured idle time. If set to 0, this feature is disabled. Note: for ISDN devices, it is preferable to use the .Xr isdnd 8 based timeout mechanism, as isdnd can predict the next charging unit for ISDN connections and optimize the timeout with this information. .It Ar lcp-timeout Ns \&= Ns Em timeout-value Allows to change the value of the LCP timeout. The default value of the LCP timeout is currently set to 1 second. The timeout-value must be specified in milliseconds. .It Ar max-auth-failure Ns \&= Ns Em count Since some ISPs disable accounts after too many unsuccessful authentication attempts, there is a maximum number of authentication failures before we will stop retrying without manual intervention. Manual intervention is either changing the authentication data (name, password) or setting the maximum retry count. If .Em count is set to .Em 0 this feature is disabled. .It Ar query-dns Ns \&= Ns Em flags During PPP protocol negotiation we can query the peer for addresses of two name servers. If .Ar flags is .Em 1 only the first server address will be requested, if .Ar flags is .Em 2 the second will be requested. Setting .Ar flags to .Em 3 queries both. .Pp The result of the negotiation can be retrieved with the .Fl n option. .El .Sh EXAMPLES .Bd -literal # ipppctl ippp0 ippp0: phase=dead myauthproto=chap myauthname="uriah" hisauthproto=chap hisauthname="ifb-gw" norechallenge lcp timeout: 3.000 s .Ed .Pp Display the settings for ippp0. The interface is currently in .Em dead phase, i. e. the LCP layer is down, and no traffic is possible. Both ends of the connection use the CHAP protocol, my end tells remote the system name .Ql uriah , and remote is expected to authenticate by the name .Ql ifb-gw . Once the initial CHAP handshake was successful, no further CHAP challenges will be transmitted. There are supposedly some known CHAP secrets for both ends of the link which are not being shown. .Pp .Bd -literal # ipppctl ippp0 \e authproto=chap \e myauthname=uriah myauthsecret='some secret' \e hisauthname=ifb-gw hisauthsecret='another' \e norechallenge .Ed .Pp A possible call to .Nm that could have been used to bring the interface into the state shown by the previous example. .Pp The following example is the complete sequence of commands to bring a PPPoE connection up: .Bd -literal # Need ethernet interface UP (or it won't send any packets) ifconfig ne0 up # Let pppoe0 use ne0 as its ethernet interface pppoectl -e ne0 pppoe0 # Configure authentication pppoectl pppoe0 \\ myauthproto=pap \\ myauthname=XXXXX \\ myauthsecret=YYYYY \\ hisauthproto=none # Configure the pppoe0 interface itself. These addresses are magic, # meaning we don't care about either address and let the remote # ppp choose them. ifconfig pppoe0 0.0.0.0 0.0.0.1 up .Ed .Sh SEE ALSO .Xr netstat 1 , .Xr ippp 4 , .Xr pppoe 4 , .Xr ifconfig 8 , .Xr ifwatchd 8 .Rs .%A B. Lloyd .%A W. Simpson .%T "PPP Authentication Protocols" .%O RFC 1334 .Re .Rs .%A W. Simpson, Editor .%T "The Point-to-Point Protocol (PPP)" .%O RFC 1661 .Re .Rs .%A W. Simpson .%T "PPP Challenge Handshake Authentication Protocol (CHAP)" .%O RFC 1994 .Re .Rs .%A L. Mamakos .%A K. Lidl .%A J. Evarts .%A D. Carrel .%A D. Simone .%A R. Wheeler .%T "A Method for Transmitting PPP Over Ethernet (PPPoE)" .%O RFC 2516 .Re .Sh HISTORY The .Nm utility is based on the .Ic spppcontrol utility which appeared in .Fx 3.0 . .Sh AUTHORS The program was written by .ie t J\(:org Wunsch, .el Joerg Wunsch, Dresden, and modified for PPPoE support by Martin Husemann.