home 
wiki
wiki
Spelling: SVECWLAP
* Before you start [1]
* DON\'T DO THIS [2]
* Configuration Under Linux [3]
BEFORE YOU START
_Increasing_ the power level of your SVEC WLAP (WAP11) to 100mW is
generally considered to be a VERY BAD IDEA, because the _quality_ of
the signal is significantly reduced. To illustrate:
WAP11 at 30mW power
WAP11 after 100mW hack
In short, DO NOT _INCREASE_ THE POWER LEVEL OF YOUR WAP11 DEVICE TO
100MW.
-------------------------
Here is some info and experimentation results on the SVEC WLAP.
(JMoir) SVEC have renamed this FD1811.
As things currently stand, there appears to be very little info on
these beasts. Even google comes up with almost no info on them, which
means they're either very new, or not widely available.
Here are my (FennBailey [4]'s) findings/info:
The SVEC WLAP is an ATMEL based AP, essentially (but not exactly) the
same as the Linksys WAP11, DLink 900AP, SMC MC2655W and the Netgear
ME102.
There are two models floating around (V2 and V3), both essentially
the same on the inside (afaik), but the V2 having RP-SMA [5]
connectors externally, and the V3 having "permenantly" attached
diversity antennas.
(JMoir) There should be V3 units with detachable antenna connectors
early May.
Both these (and all similar APs) can have either diversity antennas
turned on or off individually AND can have one assigned to send and
the other to receive.
The question I can hear you all asking is "Does the 100mW hack
work?".
The answer:
Yes (though whether this hack is a good thing or not is a separate
issue).
(Aside: I am pretty sure this is a BAD IDEA. See whys and wherefores
[6], but briefly and in summary, you create significant out of band
(as in out of the ISM band, not just the specific channel) noise,
making the device illegal. There is also the issue of power versus
antennas. Always use a better antenna before you mess with the power.
On the other hand, REDUCING the power to contain your range (for
security or noise mitigation - be nice to your neighbour) is a
legitimate use for this hack (IMHO): Paul van den Bergen)
The instructions contained on Wap11Hack [7] essentially work with a
few important differences.
1) Don't use the ATMEL SNMP manager software linked off the
seattlewireless site - It doesn't work with the SVEC APs. However, the
SNMP manager supplied on the SVEC CD is essentially the same piece of
software (and it works). Simply apply the INI changes as described and
voila! You'll get your magical hidden menus.
2) The power level numbering is different on the SVEC APs (and
Netgears). 80 is not the highest value, but rather it is inverse with
7F being the lowest output and 00 being the highest.
You can see this demonstrated via this this large screenshot [8]
One other thing tested was flashing an SVEC WLAP to WAP11 firmware,
to make it more compatible with the other various tools around (also,
SVEC seem to have very sparse support).
At time of writing, here's a friendly warning:
DON\'T DO THIS
It appears to (mostly) kill the AP. The SVEC flashes beautifully (I
used the Tellus TFTP client uploader and Linksys 1.41j firmware) and
reboots, but then fails to work.
It still responds via USB (the ethernet port turns off), but not
properly to either the Linksys, SVEC, DLink or ATMEL configuration
tools.
Because the ethernet port is dead, it makes it difficult to TFTP up
different firmware, however, I found that Linksys provides a USB
firmware flasher that successfully re-writes the firmware.
I believe I will be able to recover the AP by uploading the original
SVEC firmware, which unfortunately is not available on the SVEC site.
The plan is to TFTP it off a working SVEC and re-flash the AP that
way. From my initial hacking at the TFTP flash client, I have
determined it tries to TFTP PUT a file called atbrfirm.bin.
If someone has a working one, it would be most appreciated if the
firmware could be got, to do this, you should be able to just (from a
windows prompt) do a:
C:tftp -i GET atbrfirm.bin
I don't know if this will definitely work (I don't even know if the
TFTP server on the AP implements the GET command), but it's worth a
try.
And so concludes my testing of the SVEC WLAP (as of now anyway).
Probably the best value for money AP out there.
(djm) - Has anyone successfully found a firmware for this? I managed
to kill mine with the WAP11 firmware before I found this useful
warning
--
not sure who to reply to so ill just paste this here, hope it's not
naughty
C:>tftp -i 192.168.0.10 GET atbrfirm.bin
Timeout occurred
girlsgerms - colin@restecp.com
====================================
Seems the hack also kills the AP when in client mode with WEP,
Trap received @ 3:36:8 from host 192.168.3.8
Access Point Client is in join state.
====================================
Trap received @ 3:36:8 from host 192.168.3.8
Access Point Client is authenticating with the AP. BSSID :
004005B1356D
====================================
(keeps saying this over and over and refuses to connect)
however if you dont use the 00 value in CR21 and use the rest the
signal seems to be ok and client mode works again
... any ideas ?
-------------------------
CONFIGURATION UNDER LINUX
(GlennMcKechnie [9]) The latest development release ap-utils-1.3.3
[10] of ap-utils [11] now fully supports the ATMEL12350, which is the
chipset used in the SVEC FD1811.
ap-utils-1.3.3 is now an old version so a more recent release may
have better support again?
To communicate with the AP via ethernet when it's in the default
state, use the following settings...
fixed IP 192.168.168.10
password PUBLIC
and then change the password
Term Papers [12]
Research Papers [13]
Term Paper [14]
Research Paper [15]
Links:
------
[1] http://melbournewireless.org.au/#before_you_start
[2] http://melbournewireless.org.au/#don_t_do_this
[3] http://melbournewireless.org.au/#configuration_under_linux
[4] http://melbournewireless.org.au/?FennBailey
[5] http://melbournewireless.org.au/?RP-SMA
[6] http://www.maokhian.com/wireless/wap11.html
[7] http://www.seattlewireless.net/index.cgi/Wap11Hack
[8]
http://www.melbournewireless.org.au/~fenn/files/svec-100mw-hack0.gif
[9] http://melbournewireless.org.au/?GlennMcKechnie
[10] http://prdownloads.sourceforge.net/ap-utils/
[11] http://ap-utils.polesye.net/
[12] http://www.termpaperdom.com/
[13] http://www.researchpaperdom.com/
[14] http://www.termpaperdom.com/
[15] http://www.researchpaperdom.com/
[EditText] [Spelling] [Current] [Raw] [Code] [Diff] [Subscribe] [VersionHistory] [Revert] [Delete] [RecentChanges]