BTPAND(8)						    BSD System Manager's Manual 						 BTPAND(8)

NAME

     btpand -- Bluetooth PAN daemon

SYNOPSIS

     btpand [-i ifname] [-m mode] -a addr -d device {-s service | -S service [-p psm]}
     btpand [-c path] [-i ifname] [-l limit] [-m mode] [-p psm] -d device {-s service | -S service}

DESCRIPTION

     The btpand daemon handles Bluetooth Personal Area Networking services in the system.  It can operate in client mode as a Personal Area Net-
     working User (PANU) or in server mode as Network Access Point (NAP), Group ad-hoc Network (GN) or PANU host.  btpand connects to the system
     via a tap(4) virtual Ethernet device and forwards Ethernet packets to remote Bluetooth devices using the Bluetooth Network Encapsulation Pro-
     tocol (BNEP).

     The PANU client is the device that uses either the NAP or GN service, or can talk directly to a PANU host in a crossover cable fashion.

     A GN host forwards Ethernet packets to each of the connected PAN users as needed but does not provide access to any additional networks.

     The NAP service provides some of the features of an Ethernet bridge, with the NAP host forwarding Ethernet packets between each of the con-
     nected PAN users, and a different network media.

     Note, the only differences between NAP and GN services as implemented by btpand are in the SDP service record.  The bridging of packets by
     the NAP must be configured separately with brconfig(8).

     The options are as follows:

     -a address  In client mode, address of remote server.  May be given as BDADDR or name, in which case btpand will attempt to resolve the
		 address via the bt_gethostbyname(3) call.

     -c path	 In server mode, specify path to the sdpd(8) control socket.  The default path is /var/run/sdp.

     -d device	 Restrict connections to the local device.  May be given as BDADDR or name, in which case btpand will attempt to resolve the
		 address via the bt_devaddr(3) call.  btpand will set the tap(4) interface physical address to the BDADDR of the Bluetooth radio.

     -i ifname	 btpand uses the tap(4) driver to create a new network interface for use.  Use this option to select a specific tap(4) device
		 interface which must already be created.

     -l limit	 In server mode, limit the number of simultaneous connections.	The default limit is 7 for NAP and GN servers, and 1 for a PANU
		 server.

     -m mode	 Set L2CAP connection link mode.  Supported modes are:

		 auth	       require devices to be paired.
		 encrypt       auth, plus enable encryption.
		 secure        encryption, plus change of link key.

     -p psm	 Use an alternative L2CAP Protocol/Service Multiplexer (PSM) for server mode or client mode (when not using Service Discovery).
		 The default PSM for BNEP is 15 (0x000f).

     -s service  Name of service to provide or connect to, the following services are recognised:

		 GN	       Group ad-hoc Network.
		 NAP	       Network Access Point.
		 PANU	       Personal Area Networking User.

     -S service  As per -s except that btpand will not use SDP services for connection setup.

     When providing networking services, the Bluetooth PAN profile says that the 'Class of Device' property of the bluetooth controller SHALL
     include Networking capability (set bit 0x020000).	See btconfig(8) for details.

     After btpand has set up the client or server connection and opened the tap(4) interface, it will create a pid file and detach.

FILES

     /dev/tap
     /etc/bluetooth/hosts
     /var/run/sdp
     /var/run/tapN.pid

EXIT STATUS

     The btpand utility exits 0 on success, and >0 if an error occurs.

EXAMPLES

	   ifconfig tap1 create
	   btpand -a host -d ubt0 -s NAP -m encrypt -i tap1
	   dhclient -q -o -w -nw tap1

     Will create an encrypted connection to the NAP on host, and link that to the tap1 interface.

	   btpand -d ubt0 -s GN -m auth

     Will create a Group Network requiring authentication to join and register the GN service with the local SDP server.

SEE ALSO

     bluetooth(3), bluetooth(4), bridge(4), tap(4), brconfig(8), btconfig(8), dhclient(8), dhcpd(8), ifconfig(8), sdpd(8)

     The "Personal Area Networking Profile" and "Bluetooth Network Encapsulation Protocol" specifications are available at
	   http://www.bluetooth.com/

AUTHORS

     Iain Hibbert

BUGS

     There is no way to supply alternative values for the SDP record.

     There is no way to set net type or multicast address filters.

     btpand does not do any address routing except to directly connected unicast addresses.  All other packets are multicast.

     As btpand uses the BDADDR of the Bluetooth radio as the physical address of the tap, only one instance can be run per radio.

     btpand can only provide a single service.

BSD
								  August 17, 2008							       BSD