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September 30th, 2005 05:00

How secure is Wireless Networking?

With my new Dell laptop, I am able to pick up several of the neighbors' wireless networks and connect.  Some say they are security-enabled, but I can still connect.  It asks for the WEP key, and I put nothing, and it still connects. 
 
Just wondering as I am planning to add a wireless connection to my home network (now Phoneline HPNA), and sure don't want neighbors picking up and connecting to my computer(s).
 
I currently use 2-Wire gateway modem(s) and they seem to be very secure.
 
Suggestions for someone new to Wireless Networking? 
 
Thanks in advance.

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2.5K Posts

September 30th, 2005 16:00

Ahh..... Windows may have told you there was a connection, but did you manage to obtain an IP Address from the router?  And have you actually tried browsing the Internet after connecting to your neighbour's network without a network key?
 
While WEP has been known to be flawed, any network using it still requires the user to enter the network key to gain access.  Windows has been known at times to mislead by indicating there is a wireless connection, even when the wrong key is used, however, the real test is whether you have obtained the necessary parameters from the router such as IP Address to establish regular network connection.
 
The order of security should go something like this:
None < MAC Address Filtering < WEP < WPA (TKIP) < WPA (AES)/WPA2
 
So if all hardware on your network will support newer encryption methods, you should deploy WPA or WPA2 to protect your connection.

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7.9K Posts

September 30th, 2005 23:00

SPD, WEP had two forms of authentication: open and shared.  while open authentication is considered more secure, it will allow you to "connect" to the network without the WEP key -- you should not however be getting an IP address and should not be able to get on the net (or network) for instance.

Any wireless network with WPA-PSK encryption can be considered secure.  WPA2 is an added bonus.  This is really all the security you need -- just remember, that it is based on passphrase strength.  Most people recommend that you pick a passphrase made of numbers, upper, and lowercase letters over 20 characters long to protect yourself from reverse dictionary based attacks.

Hiding your SSID, MAC filtering, and reducing transmit power should not be considered valid security measures.  WEP encyption provides a measure of security but has severe vulnerabilities that allow it to be easily hacked -- although newer WEP capable devices should mitigate this risk somewhat.  If you deploying a new network though, don't settle for anything less than WPA.

92 Posts

October 1st, 2005 04:00

I am able to connect to the Internet, but I am not "on" the neighbor's Network as far as I know.

It is listed as "Unsecured Wireless Network" and I have it set to automatically connect when available, or I just click on it and it connects (when available).

The other wireless networks that show up from time-to-time are "Security-Enabled Wireless Networks".  They will sometimes automatically connect (my settings), but I can click on them and the page comes up about 'requires network key, WEP/WAP...type network key to connect'.  The Network Key field is blank and I leave it that way; the Confirm Network Key is grayed out.  I am able to get on the Internet via these 'security-enabled' networks as well. 

I am NOT on my own Home Network at this time as my gateway does not support wireless (just Phoneline and Ethernet). 

2 Intern

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7.9K Posts

October 1st, 2005 13:00

also do keep in mind that jumping on your neighbors network is illegal

92 Posts

October 1st, 2005 23:00

I know it is, but I didn't think getting a wireless signal (because someone doesn't have their network secured) was the same as "hacking" into their computer/network. I thought what I am receiving is like "hotspots"?  Can you please explain?

That's why I'm worried about going wireless myself--I don't want someone using my signal from my network, then possibly hacking into my computer(s).  My anti-virus does detect wireless intruders, but does not show any at present as my own network is not yet wireless.

2 Intern

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7.9K Posts

October 2nd, 2005 00:00

the netstumbler forums have more detailed discussions on this, but the general agreement is that getting an IP address without permission would be considered hacking in most states (SP1 and SP2 of windows require action on your part to connect).  actually using the connection would also likely fall under "theft of utilities" laws as the internet connection is generally provided by a phone or cable service.
 
note, that if the signal is unencypted, you are free to listen to it all day long (also known as sniffing).  they are broadcasting it, and the signal isn't protected as such.  it's only when you send stuff back to that network or try to actively use it that things become illegal.  also note, that an especially evil and smart neighbor can likely see anything you send over THEIR network (email and the like!).
 
as for your own network, if you encypt it with WPA it will keep people off of it.  encypting it with WEP will keep most people off -- and will deter casual hackers.  If you are able to connect to a network labeled as Encypted then one of four things are happening:
1) you actually have the key
2) windows or your wireless card is false reporting the security status of that network
3) you are misreading what windows is saying -- either about the security or about actually connecting
4) their access point is suffering a serious malfunction.

92 Posts

October 2nd, 2005 04:00

Thanks, I'll make sure I use WPA when I get my network's wireless connection.  2Wire (old and new router coming) told me to use a 26-number/letter password using only 0-9 and A-F, and I'm going to change the new router to 128-bit encryption.  They also said I could disable SSID and change the network name, or even make it stealth (like my wired network).  You wouldn't believe some of the wireless network "names" I've been seeing.

Is WEP 64-bit, and WPA 128-bit?

What is the difference legally when you are connecting to a "hot spot"?

Thanks for all the help with this; I really want to learn so I'm not giving away my connection and my information. :smileywink:

2 Intern

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7.9K Posts

October 2nd, 2005 04:00

WEP comes in a variety of levels -- 64bit, 128 bit, etc.  The higher the number, the more secure.  Unfortunately, WEP has some vulnerabilities that make it easy to break into (you can google it if you want the details on what specifically is wrong with it).  Given that programs now exist that claim they can crack a WEP key in under 5 minutes, this isn't the best solution.

WPA fixes the vulnerabilities of WEP ... I believe that WPA is 128 bit as well.

As for other "security" measures, such as hiding your SSID, changing its name, or MAC filtering, they are all utterly worthless.  Well, changing your SSID name is good to distinguish it from your neighbors, but it's useless for security ;-)   All such measures take about 5 seconds to work around -- and if you're using WPA, they are not needed.  If anyone can crack WPA, they won't even blink at something like masking your SSID -- and masking your SSID can create connectivity problems, especially when your neighbors are broadcasting theirs.

As for legal issues, a hotspot (say a coffee shop) generally has a policy that allows you to connect.  If you don't have their permission, it would be equally illegal ...

92 Posts

October 2nd, 2005 08:00

Thanks for all that info!  The more I'm thinking about it security-wise, I may just be better off keeping my wired (Ethernet/Phoneline) network, and just using the new router for wireless...bridging it to my old router. 

If I did that, wouldn't that be more secure as only my laptop would be possibly vulnerable?

I checked out the site you recommended and will read more--a little scary to me! 

I appreciate your patience with a wireless-newbie's questions.  :smileyhappy:

2 Intern

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7.9K Posts

October 2nd, 2005 16:00

Naw, not really.  Best bet is just to get a WPA router and use that.  You'll be fine.  Things with two router can get messy because of connectivity issues, but it is possible if for some reason you feel you must keep the old one as well.

92 Posts

October 2nd, 2005 20:00

Thanks.  I already have the new router, and it is smaller...my desk space is at a premium. :smileyvery-happy:
 
I've already ordered a USB wireless adapter for new computer in other room that is Phoneline now, and my main computer will still be connected via Ethernet...so Ethernet is still safer and NOT wireless, right?
 
I'm planning on connecting the 2nd Phoneline computer via Ethernet to the new router since it has 4 Ethernet available.  I figure all this will be easier than removing the 2 NICs or replacing them with wireless cards.
 
I forgot to mention I'm running 3 different O/S's (ME, W2KPro, XPPro), so hopefully all will be well.  Thanks again for all the advice!

2 Intern

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7.9K Posts

October 2nd, 2005 20:00

yes, ethernet is securer, faster, cheaper, and more reliable than wireless ... the negative of course is that you have to run wires.  use it when it's feasable.

92 Posts

October 2nd, 2005 20:00

I guess I could drill a hole through the wall since the 3rd computer with Phoneline shares the same wall, and then it could connect with Ethernet.  That would only leave the laptop wireless.  Thanks for that idea! 
 
I mean, I am trying to save money, and the USB wireless adapter is costing me more than the new router did after rebates!

 

 

Message Edited by spddemun on 10-02-2005 04:46 PM

2 Intern

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7.9K Posts

October 2nd, 2005 22:00

I assume the USB adapter is for a desktop?  Depending on the model, an internal PCI card might be slightly more reliable... 

92 Posts

October 3rd, 2005 00:00

No, not yet, as I've been trying to decide which way to go.  The wireless adapter has already been ordered, so I was going to see how it worked that way.  Might be too late to cancel order. 

I don't want to be without my Internet over the weekend with no tech support available.  :smileysad:

I'm not clear on how to disconnect the old router and not lose all my current settings, and being able to "look directly at other computer's files" from my main host...although new 9100 is not letting me do that now.

Another problem is I don't want SBC's Yahoo portal on any of my machines, so I am trying to bypass it and just get the drivers I need for the new 2Wire gateway, but everything is on one CD now.

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