Re: [gentoo-user] new wireless IP address on my LAN

2005-03-06 Thread Uwe Thiem
On Saturday 05 March 2005 23:27, Chris Cox wrote:
> On Saturday 05 March 2005 11:49 am, Chris Cox wrote:
> > On Saturday 05 March 2005 11:34 am, Ralph Slooten wrote:
> > > Yes Chris, as well as MAC address filtering (not bulletproof, but
> > > helps). Also you should not advertise your SSID (turn it off).
> >
> > Ok I disabled SSID Broadcast and enabled WEP.  I'm not sure how to setup
> > MAC address filtering but I'll look into it.  I guess I just never
> > expected anyone to connect to my wireless network besides me.
>
> MAC address filtering is also enabled.  Does that mean nobody can come in
> my Wireless network now?

No, it means it is more difficult for them.

Uwe

-- 
Alternative phrasing of the First Law of Thermodynamics:
If you eat it, and you don't burn it off, you'll sit on it.

http://www.uwix.iway.na (last updated: 20.06.2004)
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Re: [gentoo-user] new wireless IP address on my LAN

2005-03-05 Thread Douglas James Dunn
On Sat, 2005-03-05 at 16:11 -0500, A. Khattri wrote:
> On Sat, 5 Mar 2005, Chris Cox wrote:
> 
> > Ok I disabled SSID Broadcast and enabled WEP.  I'm not sure how to setup MAC
> > address filtering but I'll look into it.
> 
> Usually this can be setup in the web page for your access point.
> 
> > I guess I just never expected
> > anyone to connect to my wireless network besides me.
> 
> I live in a loft in New York and because of the density of buildings and
> people, there are 7 access points I can see from the front of the loft! Im
> now thinking of investing in a booster antenna because its easier for me
> to log onto my neighbors access point than my own (which in the front over
> 40 feet away). Most people have no clue how to secure their computers, let
> alone their network equipment

I wish i could do that and get rid of the 50$ internet bill every month.

> .
> 
-- 
Douglas James Dunn
cell: (724) 316-8266
Indiana University of Pennsylvania 

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Re: [gentoo-user] new wireless IP address on my LAN

2005-03-05 Thread Jason Cooper
Ralph Slooten ([EMAIL PROTECTED]) scribbled:
> A. Khattri wrote:
> > Yes and no. While it will block most people, MAC addresses can be spoofed
> > anyway.
> 
> Any idea how they could get your MAC address, or the only one the AP
> accepts? I don't think they would use brute force, but still don't know
> if it's possible to get too.

When wep is enabled, any machine in the vicinity with a wifi card in
promiscuous mode can still see the bssid, source mac, and dest mac of 
traffic flowing through the AP.  Thus, they have the mac addresses that 
are permitted.  They wait till you shut off that machine, and they have
access.  Assuming they have the wep key, which is trivial to retrieve.  

Take a look at WPA authentication, not used much yet, so there are fewer
tools available for hacking it.  Plus, the tools are dictionary attacks,
which limits their effectiveness.

Honestly, if you are that concerned about it, switch to a wired network. 

hth,

Cooper.
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Re: [gentoo-user] new wireless IP address on my LAN

2005-03-05 Thread Neil Bothwick
On Sat, 5 Mar 2005 14:43:18 -0700, Collins Richey wrote:

> You're safer now, but it has been reported that sniffers can decode
> WEP if they scarf up enough data (it seems like a few weeks is
> enough). Probably a good idea (tm) not to leave your wireless powered
> on 24x7.

Or change your WEP key every week.


-- 
Neil Bothwick

Where do you think you're going today?


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Re: [gentoo-user] new wireless IP address on my LAN

2005-03-05 Thread Ralph Slooten
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A. Khattri wrote:
> Yes and no. While it will block most people, MAC addresses can be spoofed
> anyway.

Any idea how they could get your MAC address, or the only one the AP
accepts? I don't think they would use brute force, but still don't know
if it's possible to get too.
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Re: [gentoo-user] new wireless IP address on my LAN

2005-03-05 Thread A. Khattri
On Sat, 5 Mar 2005, Chris Cox wrote:

> MAC address filtering is also enabled.  Does that mean nobody can come in my
> Wireless network now?

Yes and no. While it will block most people, MAC addresses can be spoofed
anyway.


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AK
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Re: [gentoo-user] new wireless IP address on my LAN

2005-03-05 Thread Collins Richey
On Sat, 5 Mar 2005 15:27:00 -0600, Chris Cox <[EMAIL PROTECTED]> wrote:
> On Saturday 05 March 2005 11:49 am, Chris Cox wrote:
> > On Saturday 05 March 2005 11:34 am, Ralph Slooten wrote:
> > > Yes Chris, as well as MAC address filtering (not bulletproof, but
> > > helps). Also you should not advertise your SSID (turn it off).
> >
> > Ok I disabled SSID Broadcast and enabled WEP.  I'm not sure how to setup
> > MAC address filtering but I'll look into it.  I guess I just never expected
> > anyone to connect to my wireless network besides me.
> 
> MAC address filtering is also enabled.  Does that mean nobody can come in my
> Wireless network now?
> 

You're safer now, but it has been reported that sniffers can decode
WEP if they scarf up enough data (it seems like a few weeks is
enough). Probably a good idea (tm) not to leave your wireless powered
on 24x7.

-- 
 Collins
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Re: [gentoo-user] new wireless IP address on my LAN

2005-03-05 Thread A. Khattri
On Sat, 5 Mar 2005, Chris Cox wrote:

> Ok I disabled SSID Broadcast and enabled WEP.  I'm not sure how to setup MAC
> address filtering but I'll look into it.

Usually this can be setup in the web page for your access point.

> I guess I just never expected
> anyone to connect to my wireless network besides me.

I live in a loft in New York and because of the density of buildings and
people, there are 7 access points I can see from the front of the loft! Im
now thinking of investing in a booster antenna because its easier for me
to log onto my neighbors access point than my own (which in the front over
40 feet away). Most people have no clue how to secure their computers, let
alone their network equipment.

-- 
AK
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Re: [gentoo-user] new wireless IP address on my LAN

2005-03-05 Thread Chris Cox
On Saturday 05 March 2005 11:49 am, Chris Cox wrote:
> On Saturday 05 March 2005 11:34 am, Ralph Slooten wrote:
> > Yes Chris, as well as MAC address filtering (not bulletproof, but
> > helps). Also you should not advertise your SSID (turn it off).
>
> Ok I disabled SSID Broadcast and enabled WEP.  I'm not sure how to setup
> MAC address filtering but I'll look into it.  I guess I just never expected
> anyone to connect to my wireless network besides me.

MAC address filtering is also enabled.  Does that mean nobody can come in my 
Wireless network now?

-- 
Chris
Linux 2.6.10-gentoo-r7 i686 AMD Athlon(tm) XP 
 15:25:37 up  2:21,  2 users,  load average: 0.13, 0.08, 0.15
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Re: [gentoo-user] new wireless IP address on my LAN

2005-03-05 Thread James Colannino
Chris Cox wrote:
On Saturday 05 March 2005 11:34 am, Ralph Slooten wrote:
 

Yes Chris, as well as MAC address filtering (not bulletproof, but
helps). Also you should not advertise your SSID (turn it off).
   

Ok I disabled SSID Broadcast and enabled WEP.  I'm not sure how to setup MAC 
address filtering but I'll look into it.  I guess I just never expected 
anyone to connect to my wireless network besides me. 
 

Chris,
A good thumbrule for security is this: if it can be done, regardless of 
why, it will be done.  Keep that in mind anytime you set something up 
and you'll be far better off :)

James
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Re: [gentoo-user] new wireless IP address on my LAN

2005-03-05 Thread Chris Cox
On Saturday 05 March 2005 11:34 am, Ralph Slooten wrote:
> Yes Chris, as well as MAC address filtering (not bulletproof, but
> helps). Also you should not advertise your SSID (turn it off).
>
Ok I disabled SSID Broadcast and enabled WEP.  I'm not sure how to setup MAC 
address filtering but I'll look into it.  I guess I just never expected 
anyone to connect to my wireless network besides me. 
-- 
Chris
Linux 2.6.10-gentoo-r7 i686 AMD Athlon(tm) XP 
 11:44:51 up 3 days, 14:28, 13 users,  load average: 1.68, 1.93, 1.53
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Re: [gentoo-user] new wireless IP address on my LAN

2005-03-05 Thread Marc Ballarin
On Sat, 5 Mar 2005 10:59:22 -0600
Chris Cox <[EMAIL PROTECTED]> wrote:

> ...
> someone in the area was using my bandwidth/ broadband connection.  So my next 
> question is how should I prevent this in the furture?  Should turning on WEP 
> on my router fix this?

Yes, but do it *soon*. There is no reason not to use WEP. It does not
reduce bandwidth and should not consume additional CPU time.

Regards
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Re: [gentoo-user] new wireless IP address on my LAN

2005-03-05 Thread Ralph Slooten
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Hash: SHA1

Yes Chris, as well as MAC address filtering (not bulletproof, but
helps). Also you should not advertise your SSID (turn it off).

But please excuse my ignorance, if you run a "public" access point to
which no control is done, do you really expect people not to log in when
they discover it? It's like people running public ftp servers where
anyone can upload / download... not the smartest thing in the world to
do. Basically they are using your network, and are IN your network (bye
bye firewall rules and certain things specific to internal interaction
aswell). If you run an smtp server too in your network, you had better
pray he's not a spammer (unlikely, but still the risk is there).

Nice computer by the way ... Oh, I just let myself into your house ~ the
front door was unlocked and open, with a big sign above the door telling
me that ;-)

Greetings
Ralph

Chris Cox wrote:
> Last night I just happen to connect to http://192.168.1.1/DHCP.htm and 
> noticed 
> something odd that I haven't seen before.  There was a 2nd Wireless IP 
> address on my local LAN.  But I only have 1 wireless card connected on a 
> Windows 2k machine.  This one had a different Hostname on it so I'm thinking 
> someone in the area was using my bandwidth/ broadband connection.  So my next 
> question is how should I prevent this in the furture?  Should turning on WEP 
> on my router fix this?
> 
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