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Slevin
n00b
n00b


Joined: 23 Jan 2012
Posts: 29

PostPosted: Thu Apr 19, 2012 2:28 pm    Post subject: BlueZ: can't connect with pand Reply with quote

Hello,

Since I installed Bluez-4.99 and a patch called "Adding SSP debug mode configuration to hciconfig", I can't connect my two bluetooth-devces via pand-command. The rfcomm-connection works. Until BlueZ-4.98 and without that patch, the pand-connection was no problem.

I have two gentoo-PCs with a Bluetooth-3.0-Dongle at each PC. For using an air sniffer, I had to install the "ssp debug mode"-patch and delete the stored link key. rfcomm-connection works fine, but if I use "pand" i get a security block message with hcidump:
Code:

# hcidump -i hci0
HCI sniffer - Bluetooth packet analyzer ver 2.3
device: hci0 snap_len: 1028 filter: 0xffffffffffffffff
> HCI Event: Connect Request (0x04) plen 10
    bdaddr 00:02:72:AE:58:73 class 0x420100 type ACL
< HCI Command: Accept Connection Request (0x01|0x0009) plen 7
    bdaddr 00:02:72:AE:58:73 role 0x00
    Role: Master
> HCI Event: Command Status (0x0f) plen 4
    Accept Connection Request (0x01|0x0009) status 0x00 ncmd 1
> HCI Event: Role Change (0x12) plen 8
    status 0x00 bdaddr 00:02:72:AE:58:73 role 0x00
    Role: Master
> HCI Event: Connect Complete (0x03) plen 11
    status 0x00 handle 11 bdaddr 00:02:72:AE:58:73 type ACL encrypt 0x00
< HCI Command: Read Remote Supported Features (0x01|0x001b) plen 2
    handle 11
> HCI Event: Max Slots Change (0x1b) plen 3
    handle 11 slots 5
> HCI Event: Command Status (0x0f) plen 4
    Read Remote Supported Features (0x01|0x001b) status 0x00 ncmd 1
> HCI Event: Read Remote Supported Features (0x0b) plen 11
    status 0x00 handle 11
    Features: 0xff 0xff 0x8f 0xfe 0x9b 0xff 0x79 0x87
< HCI Command: Read Remote Extended Features (0x01|0x001c) plen 3
    handle 11 page 1
> HCI Event: Command Status (0x0f) plen 4
    Read Remote Extended Features (0x01|0x001c) status 0x00 ncmd 1
> HCI Event: Read Remote Extended Features (0x23) plen 13
    status 0x00 handle 11 page 1 max 1
    Features: 0x01 0x00 0x00 0x00 0x00 0x00 0x00 0x00
< HCI Command: Remote Name Request (0x01|0x0019) plen 10
    bdaddr 00:02:72:AE:58:73 mode 2 clkoffset 0x0000
> HCI Event: Command Status (0x0f) plen 4
    Remote Name Request (0x01|0x0019) status 0x00 ncmd 1
> HCI Event: Remote Name Req Complete (0x07) plen 255
    status 0x00 bdaddr 00:02:72:AE:58:73 name 'bluetooth1-0'
> HCI Event: IO Capability Response (0x32) plen 9
    bdaddr 00:02:72:AE:58:73 capability 0x03 oob 0x00 auth 0x00
    Capability: NoInputNoOutput (OOB data not present)
    Authentication: No Bonding (No MITM Protection)
> HCI Event: IO Capability Request (0x31) plen 6
    bdaddr 00:02:72:AE:58:73
< HCI Command: IO Capability Request Reply (0x01|0x002b) plen 9
    bdaddr 00:02:72:AE:58:73 capability 0x03 oob 0x00 auth 0x00
    Capability: NoInputNoOutput (OOB data not present)
    Authentication: No Bonding (No MITM Protection)
> HCI Event: Command Complete (0x0e) plen 10
    IO Capability Request Reply (0x01|0x002b) ncmd 1
    status 0x00 bdaddr 00:02:72:AE:58:73
> HCI Event: User Confirmation Request (0x33) plen 10
    bdaddr 00:02:72:AE:58:73 passkey 800553
< HCI Command: User Confirmation Request Reply (0x01|0x002c) plen 6
    bdaddr 00:02:72:AE:58:73
> HCI Event: Command Complete (0x0e) plen 10
    User Confirmation Request Reply (0x01|0x002c) ncmd 1
    status 0x00 bdaddr 00:02:72:AE:58:73
> HCI Event: Simple Pairing Complete (0x36) plen 7
    status 0x00 bdaddr 00:02:72:AE:58:73
> HCI Event: Link Key Notification (0x18) plen 23
    bdaddr 00:02:72:AE:58:73 key E1C30FE5E1D620AC6DC78BB5A4AC299A type 4
    Type: Unauthenticated Combination Key
> HCI Event: Encrypt Change (0x08) plen 4
    status 0x00 handle 11 encrypt 0x01
> ACL data: handle 11 flags 0x02 dlen 10
    L2CAP(s): Info req: type 2
< ACL data: handle 11 flags 0x00 dlen 16
    L2CAP(s): Info rsp: type 2 result 0
      Extended feature mask 0x00b8
        Enhanced Retransmission mode
        Streaming mode
        FCS Option
        Fixed Channels
> ACL data: handle 11 flags 0x02 dlen 10
    L2CAP(s): Info req: type 3
< ACL data: handle 11 flags 0x00 dlen 20
    L2CAP(s): Info rsp: type 3 result 0
      Fixed channel list 0x00000002
        L2CAP Signalling Channel
> HCI Event: Number of Completed Packets (0x13) plen 5
    handle 11 packets 2
> ACL data: handle 11 flags 0x02 dlen 12
    L2CAP(s): Connect req: psm 15 scid 0x0040
< ACL data: handle 11 flags 0x00 dlen 16
    L2CAP(s): Connect rsp: dcid 0x0040 scid 0x0040 result 1 status 0
      Connection pending - No futher information available
< ACL data: handle 11 flags 0x00 dlen 10
    L2CAP(s): Info req: type 2
> HCI Event: Number of Completed Packets (0x13) plen 5
    handle 11 packets 2
> ACL data: handle 11 flags 0x02 dlen 16
    L2CAP(s): Info rsp: type 2 result 0
      Extended feature mask 0x00b8
        Enhanced Retransmission mode
        Streaming mode
        FCS Option
        Fixed Channels
< ACL data: handle 11 flags 0x00 dlen 10
    L2CAP(s): Info req: type 3
> ACL data: handle 11 flags 0x02 dlen 20
    L2CAP(s): Info rsp: type 3 result 0
      Fixed channel list 0x00000002
        L2CAP Signalling Channel
< ACL data: handle 11 flags 0x00 dlen 16
    L2CAP(s): Connect rsp: dcid 0x0040 scid 0x0040 result 1 status 2
      Connection pending - Authorization pending
< ACL data: handle 11 flags 0x00 dlen 16
    L2CAP(s): Connect rsp: dcid 0x0040 scid 0x0040 result 3 status 0
      Connection refused - security block
> HCI Event: Number of Completed Packets (0x13) plen 5
    handle 11 packets 2
> HCI Event: Number of Completed Packets (0x13) plen 5
    handle 11 packets 1
> HCI Event: Disconn Complete (0x05) plen 4
    status 0x00 handle 11 reason 0x13
    Reason: Remote User Terminated Connection



Maybe the new BlueZ-version or the patch changed some (security-)configuration? I don't know; I'm new to linux and don't know which files could have been changed. I just know that 3 different levels of security are possible, but I don't know where I can choose a security-level.
Hope someone of you know what to do.

Regards,
Steffen
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