mirror of
https://github.com/freebsd/freebsd-src.git
synced 2024-11-30 10:52:50 +00:00
b144e70a33
Remove /^\.\\"\n\.\\"\s*\$FreeBSD\$$\n/
Similar commit in main:
(cherry picked from commit fa9896e082)
282 lines
8.5 KiB
Groff
282 lines
8.5 KiB
Groff
.\" Copyright (C) 1997, 2001 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.
|
|
.\"
|
|
.Dd October 22, 2021
|
|
.Dt SPPPCONTROL 8
|
|
.Os
|
|
.Sh NAME
|
|
.Nm spppcontrol
|
|
.Nd display or set parameters for an sppp interface
|
|
.Sh SYNOPSIS
|
|
.Nm
|
|
.Op Fl v
|
|
.Ar ifname
|
|
.Op Ar parameter Ns Op Li = Ns Ar value
|
|
.Op Ar ...
|
|
.Sh DEPRECATION NOTICE
|
|
The
|
|
.Xr sppp 4
|
|
module and the
|
|
.Nm
|
|
utility is not present in
|
|
.Fx 14.0
|
|
and later.
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Xr sppp 4
|
|
driver might 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 the
|
|
.Dq 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
|
|
.Cm down .
|
|
.Pp
|
|
The currently supported parameters include:
|
|
.Bl -tag -offset indent -width indent
|
|
.It Va authproto Ns Li = Ns Ar protoname
|
|
Set both, his and my authentication protocol to
|
|
.Ar protoname .
|
|
The protocol name can be one of
|
|
.Dq Li chap ,
|
|
.Dq Li pap ,
|
|
or
|
|
.Dq Li 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 Va myauthproto Ns Li = Ns Ar 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 Va hisauthproto Ns Li = Ns Ar protoname
|
|
Same as above, but only for his end of the link.
|
|
.It Va myauthname Ns Li = Ns Ar name
|
|
Set my system name for the authentication protocol.
|
|
.It Va hisauthname Ns Li = Ns Ar 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 is the name remote must use to
|
|
authenticate himself (in connection with his secret).
|
|
.It Va myauthsecret Ns Li = Ns Ar 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 plain text
|
|
together with the system name.
|
|
Do not forget to quote the secrets from
|
|
the shell if they contain shell metacharacters (or white space).
|
|
.It Va myauthkey Ns Li = Ns Ar secret
|
|
Same as above.
|
|
.It Va hisauthsecret Ns Li = Ns Ar secret
|
|
Same as above, to be used if we are an authenticator and the remote peer
|
|
needs to authenticate.
|
|
.It Va hisauthkey Ns Li = Ns Va secret
|
|
Same as above.
|
|
.It Va callin
|
|
Require remote to authenticate himself only when he is 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 Va always
|
|
The opposite of
|
|
.Va 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 the
|
|
.Dq list
|
|
mode.
|
|
.It Va 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 cannot 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 the
|
|
.Dq list
|
|
mode.
|
|
.It Va lcp-timeout Ns Li = Ns Ar timeout-value
|
|
Allows to change the value of the LCP restart timer.
|
|
Values are
|
|
specified in milliseconds.
|
|
The value must be between 10 and 20000 ms,
|
|
defaulting to 3000 ms.
|
|
.It Va enable-vj
|
|
Enable negotiation of Van Jacobsen header compression.
|
|
(Enabled by default.)
|
|
.It Va disable-vj
|
|
Disable negotiation of Van Jacobsen header compression.
|
|
.It Va enable-ipv6
|
|
Enable negotiation of the IPv6 network control protocol.
|
|
(Enabled by default if the kernel has IPv6 enabled.)
|
|
.It Va disable-ipv6
|
|
Disable negotiation of the IPv6 network control protocol.
|
|
Since every
|
|
IPv4 interface in an IPv6-enabled kernel automatically gets an IPv6
|
|
address assigned, this option provides for a way to administratively
|
|
prevent the link from attempting to negotiate IPv6.
|
|
Note that
|
|
initialization of an IPv6 interface causes a multicast packet to be
|
|
sent, which can cause unwanted traffic costs (for dial-on-demand
|
|
interfaces).
|
|
.El
|
|
.Sh EXAMPLES
|
|
.Bd -literal
|
|
# spppcontrol bppp0
|
|
bppp0: phase=dead
|
|
myauthproto=chap myauthname="uriah"
|
|
hisauthproto=chap hisauthname="ifb-gw" norechallenge
|
|
lcp-timeout=3000
|
|
enable-vj
|
|
enable-ipv6
|
|
.Ed
|
|
.Pp
|
|
Display the settings for
|
|
.Li bppp0 .
|
|
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
|
|
.Dq Li uriah ,
|
|
and remote is expected to authenticate by the name
|
|
.Dq Li 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.
|
|
.Bd -literal
|
|
# spppcontrol bppp0 \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.
|
|
.Sh SEE ALSO
|
|
.Xr netstat 1 ,
|
|
.Xr sppp 4 ,
|
|
.Xr ifconfig 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
|
|
.Sh HISTORY
|
|
The
|
|
.Nm
|
|
utility appeared in
|
|
.Fx 3.0 .
|
|
.Sh AUTHORS
|
|
The program was written by
|
|
.An J\(:org Wunsch ,
|
|
Dresden.
|