3.2.1. iWRAP Password Protection

The access to iWRAP can be password protected. The default password is buffy, but it can be set off or changed with the setup application (see Section 2.4). The password is case sensitive. The password must be typed in as the first command after the server has replied with "READY."

3.2.2. LAN Access Profile

This profile is not automatically started at boot. The default settings can be changed with the setup application (see section Section 2.4), or runtime with the iWRAP interface (see Chapter 7).

Access Server can also act as a LAN Access Client, but in this case it must be controlled manually using iWRAP commands, as described in Chapter 7.

3.2.3. Serial Port Profile

This profile is not automatically started at boot. The default settings can be changed with the setup application (see section Section 2.4).

The Serial Port Profile is used to replace an RS-232 serial cable between two devices with a Bluetooth connection. The physical setup is shown in Figure 3-1.

State A) in the figure is the starting situation with a serial cable connecting the devices. This cable is to be replaced with a Bluetooth connection.

In state B) the long serial connection is replaced with a Bluetooth Serial Port Profile connection between the two Access Server devices. These Access Server devices are then locally connected to the user devices with (short) serial cables. The cable between user device A and Access Server device A must be a cross-over cable. The cable between user device B and Access Server device B must be similar (direct or cross-over) to the one used in state A).

If RTS/CTS handshaking is used to ensure correct data transfer, the serial cables must have these pins connected. Notice that this handshaking is "local": it takes place between the user device and Access Server. No handshaking between user device A and user device B on the other end of the Bluetooth connection is provided.

If RTS/CTS handshaking is not used, CTS must be connected to DTR.

DCD, DTR, and DSR signals are not supported. This also means that user devices A and B will not be able to tell whether or not the Bluetooth connection is up.

When the physical setup is ready, you can create the Bluetooth connection. By default, the Serial Port Profile is started up at boot with the default settings. That is, listening in DevB mode, at 115200 bps, 8 data bits, no parity, 1 stop bit, and RTS/CTS enabled. To change these settings, use the setup application or the WWW Setup interface, as described in Section 2.4.

3.2.4. Object Push and File Transfer Profile

Access Server has two OBEX profiles, Object Push Profile (ObjP) and File Transfer Profile (FTP). You can use these profiles to transfer files between different Access Servers and other devices supporting ObjP or FTP.

	  obexput [parameters] bdaddr channel file(s)
	

	  obexget [parameters] bdaddr channel file(s)
	

	  obexsender-put parameters
	

	  regex <match1>
	  regex <match2>
	  file <fakename1> </path/to/file1>
	  file <fakename2> </path/to/file2>
	  exec </path/to/command1>
	  exec </path/to/command2>
	  regex <match3>
	  file <fakename3> </path/to/file3>
	  ...
	

	  regex Nokia.9500
	  file hello.jpg /mnt/usb/communicator.jpg
	  regex .
	  file hello.jpg /mnt/usb/unknown.jpg
	

	  obexsender-inquiry parameters
	

3.2.5. PAN Profiles

Access Server has support for all PAN profile modes: Personal Area Network User (PANU), Network Access Point (NAP) and Generic Networking (GN). Accepting incoming PAN connections to any of these modes is disabled by default for security reasons.

Access Server can be configured to accept incoming PAN connections and the default settings can be changed by using the setup application (see section Section 2.4).

The Network Access Point mode is the most useful PAN profile mode. You can enable it by sending the enable-pan.wpk file (available on-line at https://www.bluegiga.com/as/current/enable-pan.wpk) to Access Server by using the Bluetooth Object Push profile. Alternatively, you can copy the file to the root of a USB memory dongle and insert the dongle to Access Server's USB port.

The device creating the PAN connection decides upon the modes to be used. Access Server automatically handles incoming connections. Access Server can also act as a PAN client, but in this case it must be controlled manually by using the iWRAP interface, described in Chapter 7.

3.2.6. Changing the Bluetooth Range

The transmit power of Access Server is configurable. By default, class 1 (100 meter range) settings are used. The settings can be changed down to "class 2" (10 meter range) settings with the btclass 2 command, or even lower with the btclass 3 command. Class 1 settings can be restored with the btclass 1 command. You can find these command also in Setup → Advanced settings → Bluetooth commands menu in the WWW Setup interface.

After btclass # is given, it is recommended to reboot Access Server once to restart ObexSender and other applications connected to the iWRAP server(s).

3.2.7. btcli

You can send iWRAP commands from the command line by using the btcli application. See Section 7.4 for more information.

3.2.8. serialbluetooth

It is also possible to control the first iWRAP server (at port 10101) through RS-232 with the serialbluetooth application.

Usage:

serialbluetooth [options]

To see the command options, enter the serialbluetooth --help command.

Basically, serialbluetooth takes commands from a serial port and forwards them to the iWRAP server. All the commands available through iWRAP are also available through serial port.

There are two exceptions:

1. After making an outgoing RFCOMM data call, all input from the serial port is forwarded to the data socket, not to the control socket. To close the data socket, you have to write +++ with a 200ms pause before each character. It is not possible to have two concurrent RFCOMM calls.

2. All incoming RFCOMM calls are answered automatically. Again, to close the data socket, write +++ as with the outgoing call.

3.3.1. Compact Flash GPRS Cards

The operating system automatically identifies the Compact Flash GPRS card when it is inserted. Access Server can use the GPRS card to connect to the GPRS network, or to act as an SMS gateway to send and receive SMS messages.

You can enable the GPRS mode and configure its settings, such as the SIM card's PIN code, by using the setup application or its WWW interface. For more information, see Section 2.4 and documentation for Setup → Network settings → Enable GPRS interface in Appendix B.

GPRS, when enabled, is by default only turned on when needed. If Access Server can access the Internet (or any desired address) by using the default interface nap, it does not activate and use the GPRS (ppp0) interface.

The simplest way to test the GPRS interface is to configure the default interface nap to use dynamic network configuration (the default) and enable GPRS through the setup application, then to disconnect the Ethernet cable, reboot the device with the management console enabled. After the boot, ping an IP address in the Internet, such as 194.100.31.45 (bluegiga.com).

The first five or so packets are lost, but after that the GPRS connection should be up. To enable the interface automatically, just enter ping -c 20 ip-in-internet to /etc/rc.d/rc.local.

Using WRAP SMS Gateway Server is documented in Section 3.5.3.

If needed for some special use, the Compact Flash GPRS card can also be accessed directly from /dev/ttyS0, a device file which exists if the GPRS card is successfully initialized.

3.3.2. Compact Flash GPS Card

The operating system automatically identifies the Compact Flash GPS card when it is inserted. At that time, the device file /dev/ttyS0 is created and the GPS card can be accessed by using that device with the serial port settings the GPS card uses.

The supported Compact Flash cards are listed in Appendix D.

3.3.3. Compact Flash Wi-Fi Cards

Access Server supports Prism II/III based CF Wi-Fi cards. The supported Compact Flash cards are listed in Appendix D.

By default, Access Server notices when a supported Wi-Fi card is inserted and tries to use it in the client mode, without encryption. So, if there is an open Wi-Fi Access Point in range, Access Server will automatically connect to it.

To configure Wi-Fi to the Access Point mode, or to change other Wi-Fi settings, use the setup application or its WWW interface at Setup → Network settings → Wi-Fi.

A standard set of command line wireless utilities is provided to fine-tune your Wi-Fi configuration:

• iwconfig

• iwlist

• iwpriv

For more information on these utilities, see: http://www.hpl.hp.com/personal/Jean_Tourrilhes/Linux/Tools.html

3.5.1. Finder

The Finder service is a small service, which listens for UDP broadcast queries from Access Server Finder applications and responses to those queries with identification information (IP address, model, serial number, etc.) about Access Server.

The finder command can be used to query Finder service information from Access Servers in the network. With no parameters, finder sends the query using the broadcast address of the default interface (nap). Broadcasting to networks of other interfaces can be done with --interface parameter, such as the zero configuration interface nap:9in the following example:

        [root@wrap root]$ finder --interface nap:9
        Access Server 2291 (S/N: 0402110112) (build: 3.1)
        - Hostname: wrap.localdomain
        - IP: 169.254.30.233 (nap:9), 192.168.161.1 (gn)
        - Ethernet MAC: 00:07:80:00:03:ed
        - iWRAP: 10101 00:07:80:80:0b:c3 bt1.2 (W0402110112_1)
        Access Server 2291 (S/N: 0606221029) (build: 3.1)
        - Hostname: wrap.localdomain
        - IP: 169.254.36.138 (nap:9), 192.168.161.1 (gn)
        - Ethernet MAC: 00:07:80:00:0d:44
        - iWRAP: 10101 00:07:80:80:0b:c4 bt1.2 (W0606221029_1)
        [root@wrap root]$
      

With parameter --send finder will send info once to a specified host, for example to inform that device has booted.

For information about the finder protocol, see Chapter 9.

3.5.2. ObexSender

The ObexSender application is automatically started in Access Server. Its purpose is to receive business cards (vCards), images, or other files, and analyze their content and send files back selecting them based on configured keywords found.

ObexSender can also make an inquiry for bluetooth devices, and automatically send one or more files to all new devices found.

ObexSender can be configured with the setup application or by editing the /etc/obexsender.conf file (see Section 2.4).

For detailed instructions on using ObexSender, see Chapter 5.

3.5.3. SMS Gateway Server

WRAP SMS Gateway Server supports Nokia 20, Nokia 30, or Wavecom WMOD2 compatible GSM terminals and the supported GSM/GPRS Compact Flash cards for sending and receiving SMS messages. By default, the Compact Flash card is used. The PIN code query of the SIM card at power-up must be disabled.

WRAP SMS Gateway Server is disabled by default. To enable it, use the setup application's WWW interface, as described in section Section 2.4. Enabling is done at Setup → Applications → Default startup applications → smsgw.

WRAP SMS Gateway Server can be configured to use a modem connected to the user serial port with the setup application or its WWW interface by changing the setting at Setup → Applications → SMS gateway settings → Modem device to /dev/ttyAT1 from the default /dev/ttyS0.

For further information on using smsgw, see the makesms example in Section 6.3.1.

3.5.4. User Level Watchdog

WRAP User Level Watchdog daemon listens on UDP port 4266 for "id timeout" messages. "id" is an ASCII string, without spaces. If "timeout" equals to 0 (zero), the "id" is removed from the list of processes to wait. If "timeout" is greater than 0 (zero), the "id" is added or updated.

When there is no message for "id" received within the "timeout" seconds, the user level watchdog dies and the kernel watchdog reboots Access Server.

The watchdog command can be used to send messages to the watchdog daemon. This is done through command watchdog id timeout. For example, watchdog test 5.

3.5.5. Remote Management

Access Server contains simple tools that provide means for full and secure remote management of the device.

The basic remote management can be performed using the WWW Setup interface, SSH command line access, and SCP and SFTP file transfer protocols.

In addition to those, Access Server contains WRAP Remote Management System for transferring management packets over different media to Access Server and automatically sending response packets back.

The management packets (*.wpk) are automatically processed when they are transferred to the autoinstall directory in Access Server (/tmp/obex by default, but configurable with the setup application or WWW interface at Setup → Applications → wpkgd settings). The easiest way to transfer a management packet to this directory is to upload it from WWW Setup at Setup → Advanced settings → Upload a software update.

          %wpkg-version: 2
          %wpkg-prepare:
          echo Hello world
        

          %wpkg-version: 2
          %wpkg-prepare:
          FOO=`pwd`
          cd /
          tar xzf ${FOO}/files.tar.gz
          echo Done.
        

          %wpkg-version: 2
          %wpkg-format:  vcf
          %wpkg-prepare:
          ipaddr() {
          echo `ifconfig nap | grep "inet addr" | awk -F [:] \
            \\{print\\$2\\} | awk \\{print\\$1\\}`
          }
          serialno() {
          echo `wrapid | grep Hardware | awk \\{print\\$5\\}`
          }
          echo -e "BEGIN:VCARD\r"
          echo -e "VERSION:2.1\r"
          echo -e "N:`serialno`\r"
          echo -e "TEL:`ipaddr`\r"
          echo -e "URL:`hostname`\r"
          echo -e "END:VCARD\r"
        

          %wpkg-version: 2
          %wpkg-reply:   none
          %wpkg-prepare:
          echo A > /dev/led
          sleep 1
          echo a > /dev/led
        

3.5.6. FTP

If you enable the FTP server, users can use it to log in anonymously to the /tmp/obex directory with download access or as root with password buffy to the root directory with full access. The password and other settings can be changed on Access Server with the setup application or by editing the /etc/ftpd.conf file (see Section 2.4).

3.5.7. Web Server

The integrated web server in Access Server supports HTTP/1.0 methods GET and POST, and has light user authentication capabilities. The content can be either static or dynamic - the WWW server is CGI/1.1 compatible.

The web server is always running and the content (http://wrap-ip-address/) is located in the /var/www/html/ directory in Access Server's file system.

The web server is configured to protect the WWW Setup interface with a username and password. The default username and password can be changed as instructed in Section 2.4. For further information about using the web server for your own applications, see the web examples in Section 6.3.1.

3.5.8. SNMP

A separate software update package is available from Bluegiga Techforum (https://www.bluegiga.com/techforum/). This update adds the Net-SNMP suite of applications to Access Server. The current Net-SNMP implementation for Access Server is limited and will be extended in the future. However, it can be used to poll the basic status of Access Server.

Configuration details can be found and altered in configuration file /etc/snmp/snmpd.conf, which is accessible as described in Section 2.4.

For more information about the Net-SNMP suite, see http://net-snmp.sourceforge.net/

3.5.9. OpenVPN

A separate software update package is available from Bluegiga Techforum (https://www.bluegiga.com/techforum/). This update adds the OpenVPN™, a full-featured SSL VPN solution, to Access Server.

For detailed instructions on using OpenVPN with Access Server, see Section 10.4.

For more information about the OpenVPN™, see http://openvpn.net/.

3.5.10. SSH

By default, users can use SSH to log in (or SCP and SFTP to transfer files) as user root with password buffy. The password can be changed on Access Server by using command passwd or with the setup application.

3.5.11. Telnet

If you enable telnet, users can log in over telnet as user root with password buffy. The password can be changed on Access Server using the command passwd or with the setup application.

3.5.12. NTP

The ntpd service uses the standard Network Time Protocol (NTP) to keep Access Server system time automatically in sync using a random selection of eight public stratum 2 (NTP secondary) time servers. The service is also configured to answer NTP requests from other devices.

The NTP server configuration can be altered by editing its configuration file /etc/ntpd.conf.