Re: pointers to material for using netbook's wireless as access point
On Tue, Jun 6, 2017 at 7:30 PM, Dan Ritter <dsr@randomstring.org> wrote:
> On Tue, Jun 06, 2017 at 10:58:09AM +0900, Joel Rees wrote:
>> I've seen a lot of answers that say "NOT POSSIBLE!!", as if the device
>> manufacturers really want us to believe that it can only be done on
>> MSWindows and MacOSX.
>>
>> I've seen a bit of talk about what appears to me to be the reverse of what I
>> want to do -- allow other computers to connect via the netbook's ethernet
>> port and piggyback the netbook's wireless onto the web. That's not what
>> I want to do.
>>
>> I've got brctl and hostapd installed and have tried some
>> configurations I've seen. I keep getting blocked, apparently by
>> RF-kill and/or something
>> else that tells me it's not allowed.
>>
>> So, before I dump all my configuration files and error messages on the
>> list, can anyone point me to a good how-to? I want to make sure I'm not
>> missing something obvious before I start asking questions.
>
> Depends on the wifi chipset. Some are deliberately disabled by
> their manufacturer from acting in "infrastructure mode", which
> is to say, as an access point.
>
> Here's how to tell:
>
> sudo iwconfig wlan1 mode master
Error for wireless request "Set Mode" (8B06) :
SET failed on device wlan0 ; Invalid argument.
But, without "master",
wlan0 IEEE 802.11bgn ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=off
Retry long limit:7 RTS thr=2347 B Fragment thr:off
Encryption key:off
Power Management:on
> will put it into infrastructure mode if it can *and you have an
> older chip*
>
> or
>
> sudo iw list
Supported interface modes:
* IBSS
* managed
* AP
* AP/VLAN
* monitor
software interface modes (can always be added):
* AP/VLAN
* monitor
interface combinations are not supported
I'll paste in the rest below, just in case.
> will show "AP" as an available mode on newer chips.
>
>
> brctl and hostapd are the right way to go.
If I only knew what to do with them. ;-/
It seems like my goal would be to set up a brdge, or perhaps
(according to some of the things I read) routing with NAT, and to set
up the netbook as a DHCP server for the wireless network. Am I
thinking in the right direction, there?
> RF-kill
> is sometimes in hardware (physical switch) and sometimes in
> software (package rfkill is available starting in Wheezy).
Would the rfkill package be useful to install if the messages I get about rfkill
include "hard blocked"?
> -dsr-
And, something I keep wondering about, would ad hoc mode be a good
alternative to setting up an access point? I seem to remember using that,
perhaps in addition to sharing, on old Macs some fifteen our so years ago.
--
Joel Rees
One of these days I'll get someone to pay me
to design a language that combines the best of Forth and C.
Then I'll be able to leap wide instruction sets with a single #ifdef,
run faster than a speeding infinite loop with a #define,
and stop all integer size bugs with a bare cast.
More of my delusions:
http://reiisi.blogspot.com/2017/05/do-not-pay-modern-danegeld-ransomware.html
http://reiisi.blogspot.jp/p/novels-i-am-writing.html
-----------------------------
iw list output:
Wiphy phy0
Band 1:
Capabilities: 0x1862
HT20/HT40
Static SM Power Save
RX HT20 SGI
RX HT40 SGI
No RX STBC
Max AMSDU length: 7935 bytes
DSSS/CCK HT40
Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
Minimum RX AMPDU time spacing: 16 usec (0x07)
HT TX/RX MCS rate indexes supported: 0-7, 32
Frequencies:
* 2412 MHz [1] (20.0 dBm)
* 2417 MHz [2] (20.0 dBm)
* 2422 MHz [3] (20.0 dBm)
* 2427 MHz [4] (20.0 dBm)
* 2432 MHz [5] (20.0 dBm)
* 2437 MHz [6] (20.0 dBm)
* 2442 MHz [7] (20.0 dBm)
* 2447 MHz [8] (20.0 dBm)
* 2452 MHz [9] (20.0 dBm)
* 2457 MHz [10] (20.0 dBm)
* 2462 MHz [11] (20.0 dBm)
* 2467 MHz [12] (20.0 dBm)
* 2472 MHz [13] (20.0 dBm)
* 2484 MHz [14] (disabled)
Bitrates (non-HT):
* 1.0 Mbps
* 2.0 Mbps
* 5.5 Mbps
* 11.0 Mbps
* 6.0 Mbps
* 9.0 Mbps
* 12.0 Mbps
* 18.0 Mbps
* 24.0 Mbps
* 36.0 Mbps
* 48.0 Mbps
* 54.0 Mbps
max # scan SSIDs: 4
max scan IEs length: 2257 bytes
RTS threshold: 2347
Coverage class: 0 (up to 0m)
Supported Ciphers:
* WEP40 (00-0f-ac:1)
* WEP104 (00-0f-ac:5)
* TKIP (00-0f-ac:2)
* CCMP (00-0f-ac:4)
Available Antennas: TX 0 RX 0
Supported interface modes:
* IBSS
* managed
* AP
* AP/VLAN
* monitor
software interface modes (can always be added):
* AP/VLAN
* monitor
interface combinations are not supported
Supported commands:
* new_interface
* set_interface
* new_key
* new_beacon
* new_station
* new_mpath
* set_mesh_params
* set_bss
* authenticate
* associate
* deauthenticate
* disassociate
* join_ibss
* join_mesh
* remain_on_channel
* set_tx_bitrate_mask
* action
* frame_wait_cancel
* set_wiphy_netns
* set_channel
* set_wds_peer
* connect
* disconnect
Supported TX frame types:
* IBSS: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90
0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
* managed: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90
0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
* AP: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0
0xb0 0xc0 0xd0 0xe0 0xf0
* AP/VLAN: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90
0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
* mesh point: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80
0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
* P2P-client: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80
0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
* P2P-GO: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90
0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
Supported RX frame types:
* IBSS: 0xd0
* managed: 0x40 0xd0
* AP: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0
* AP/VLAN: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0
* mesh point: 0xb0 0xc0 0xd0
* P2P-client: 0x40 0xd0
* P2P-GO: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0
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