diff options
| -rw-r--r-- | usr.sbin/ppp/ppp/ppp.8 | 136 |
1 files changed, 129 insertions, 7 deletions
diff --git a/usr.sbin/ppp/ppp/ppp.8 b/usr.sbin/ppp/ppp/ppp.8 index 01aa2c7c4e9..54bcea0a059 100644 --- a/usr.sbin/ppp/ppp/ppp.8 +++ b/usr.sbin/ppp/ppp/ppp.8 @@ -1,4 +1,4 @@ -.\" $Id: ppp.8,v 1.7 1998/11/08 13:05:48 brian Exp $ +.\" $Id: ppp.8,v 1.8 1998/11/08 13:06:26 brian Exp $ .Dd 20 September 1995 .Os FreeBSD .Dt PPP 8 @@ -186,6 +186,122 @@ Refer to the logging facility if you're interested in what exactly is done as user id zero. .Sh GETTING STARTED +The following command line switches are understood by +.Nm ppp : +.Bl -tag -width XXX -offset XXX +.It Fl auto +.Nm Ppp +opens the tun interface, configures it then goes into the background. +The link isn't brought up until outgoing data is detected on the tun +interface at which point +.Nm +attempts to bring up the link. Packets received (including the first one) +while +.Nm +is trying to bring the link up will remain queued for a default of +2 minutes. See the +.Dq set choked +command below. +.Pp +At least one +.Dq system +must be given on the command line (see below) and a +.Dq set ifaddr +must be done in the system profile that specifies a peer IP address to +use when configuring the interface. Something like +.Dq 10.0.0.1/0 +is usually appropriate. See the +.Dq pmdemand +system in +.Pa /etc/ppp/ppp.conf.sample +for an example. +.It Fl background +Here, +.Nm +attempts to establish a connection with the peer immediately. If it +succeeds, +.Nm +goes into the background and the parent process returns an exit code +of 0. If it fails, +.Nm +exits with a non-zero result. +.It Fl direct +This is used for receiving incoming connections. +.Nm Ppp +ignores the ``set device'' line and uses descriptor 0 as the link. +.Pp +If callback is configured, +.Nm +will use the +.Dq set device +information when dialing back. +.It Fl dedicated +This option is designed for machines connected with a dedicated +wire. +.Nm Ppp +will always keep the device open and will never use any configured +chat scripts. +.It Fl ddial +This mode is equivalent to +.Fl auto +mode except that +.Nm +will bring the link back up any time it's dropped for any reason. +.It Fl interactive +This is a no-op, and gives the same behaviour as if none of the above +flags have been specified. +.Nm Ppp +loads any systems specified on the command line then provides an +interactive prompt. +.It Fl alias +This flag doesn't control +.Nm ppp Ns No 's +mode. It does the equivalent of an +.Dq enable alias yes . +Additionally, if the +.Fl auto +flag is also specified, an implicit +.Dq enable iface-alias +is done. +See below for details. +.Pp +Enabling IP aliasing allows +.Nm ppp +to act as a NAT or masquerading engine for all machines on an internal +LAN. Refer to +.Xr libalias 3 +for details. +.El +.Pp +Additionally, one or more systems may be specified on the command line. +A +.Sq system +is a configuration entry in +.Pa /etc/ppp/ppp.conf . +.Nm Ppp +will read the +.Dq default +system from +.Pa /etc/ppp/ppp.conf +at startup, followed by each of the systems specifed on the command line. +.Pp +Only one of the +.Fl auto , +.Fl background , +.Fl ddial , +.Fl direct , +.Fl dedicated +and +.Fl interactive +switches may be specified. +.Nm Ppp Ns No 's +.Sq mode +may subsequently be changed with the +.Dq set mode +command (see below). +.Pp +For now, we'll stick to using interactive mode. +.Pp When you first run .Nm you may need to deal with some initial configuration details. @@ -350,16 +466,22 @@ When the peer starts to talk in .Nm detects this automatically and returns to command mode. .Bd -literal -offset indent -ppp ON awfulhak> -Ppp ON awfulhak> -PPp ON awfulhak> -PPP ON awfulhak> +ppp ON awfulhak> # No link has been established +Ppp ON awfulhak> # We've connected & finished LCP +PPp ON awfulhak> # We've authenticated +PPP ON awfulhak> # We've agreed IP numbers .Ed .Pp If it does not, it's possible that the peer is waiting for your end to -start negotiating. To force +start negotiating or that +.Nm ppp +can't identify the incoming packets as being +.Em PPP +packets, perhaps due to your parity settings. To force .Nm -to start sending PPP configuration packets to the peer, use the +to start sending +.Em PPP +configuration packets to the peer, use the .Dq ~p command to enter packet mode. .Pp |