NAME

       xl2tpd-control - xl2tpd control utility.

DESCRIPTION

       xl2tpd is an implementation of the Layer 2 Tunneling Protocol (RFC 2661).  L2TP allows to tunnel PPP over
       UDP.  Some ISPs use L2TP to tunnel user sessions from dial-in servers (modem banks, ADSL DSLAMs) to back-
       end PPP servers.  Another important application is Virtual Private Networks where the IPsec  protocol  is
       used to secure the L2TP connection (L2TP/IPsec, RFC 3193).

       xl2tpd  works  by  opening a pseudo-tty for communicating with pppd.  It runs completely in userspace but
       supports kernel mode L2TP.

       xl2tpd supports IPsec SA Reference tracking to enable  overlapping  internak  NAT'ed  IP's  by  different
       clients  (eg  all  clients  connecting  from their linksys internal IP 192.168.1.101) as well as multiple
       clients behind the same NAT router.

SYNOPSIS

       xl2tpd-control [-c PATH] <COMMAND> <TUNNEL_NAME> [OPTIONS]

OPTIONS

       -c     This option specifies xl2tpd control file.

       -d     This option enables debugging mode.

COMMANDS

       add-lac
              Adds new or modify existing LAC (L2TP Access Concentrator) configuration.  Configuration should be
              specified  as  a  command  options  in  <key>=<value>  pairs  format.  See  available  options  in
              xl2tpd.conf(5).

       connect-lac
              Establish  new  connection  to  LAC.   Username  and  secret for tunnel can be passed as a command
              options.

       disconnect-lac
              Disconnects tunnel.

       remove-lac
              Removes existing LAC configuration.  xl2tpd disconnects the tunnel before removing.

       add-lns
              Adds new or modify existing LNS (L2TP Network Server) configuration.

       remove-lns
              Removes existing LNS configuration.

       status-lns
              Check the status of LNS.

       available
              Check availability.

BUGS

       Please use the github project page https://github.com/xelerance/xl2tpd to send bugreports, issues and any
       other feedback.

SEE ALSO

       xl2tpd.conf(5), xl2tpd(8), pppd(8)

COPYLEFT

       This program is free software; you can redistribute it and/or modify  it  under  the  terms  of  the  GNU
       General  Public License as published by the Free Software Foundation; either version 2 of the License, or
       (at your option) any later version.

       This program is distributed in the hope that it will be useful, but WITHOUT ANY  WARRANTY;  without  even
       the  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
       License for more details.

       You should have received a copy of the GNU General Public License along with this program (see  the  file
       LICENSE);  if  not,  see  https://www.gnu.org/licenses/,  or  contact  Free Software Foundation, Inc., 51
       Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

CONTRIBUTORS

       Alexander Dorokhov <alex.dorokhov@gmail.com>
       Alexander Naumov <alexander_naumov@opensuse.org>

AUTHORS

       Forked from l2tpd by Xelerance: https://github.com/xelerance/xl2tpd

       Michael Richardson <mcr@xelerance.com>
       Paul Wouters <paul@xelerance.com>
       Samir Hussain <shussain@xelerance.com>

       Previous development was hosted at sourceforge (http://www.sourceforge.net/projects/l2tpd) by:

       Scott Balmos <sbalmos@iglou.com>
       David Stipp <dstipp@one.net>
       Jeff McAdams <jeffm@iglou.com>

       Based off of l2tpd version 0.61.  Many thanks to Jacco de Leeuw <jacco2@dds.nl> for maintaining l2tpd.

       Copyright (C)1998 Adtran, Inc.
       Mark Spencer <markster@marko.net>

                                                    Jan 2022                                   xl2tpd-control(8)