If I let my neighbor share my WiFi, can they see my network traffic?

Actually, his router is most likely a routing switch, which would allow his neighbor to use ARP Poisoning to view traffic to and from other computers in his home network. You're right, though, that traffic to and from his bank is probably encrypted (via https) so ARP poisoning still won't enable his neighbor to actually read any of that particular data once it's captured. Unencrypted traffic, however, would be vulnerable.

That isn't completely true. I agree that the obvious is the sharing of files and printers.

But, depending on how techie the neighbor is, he could very likely see anything happening on the network. I manage our office network and have my computer set up to sniff all packets that carry thru to the internet. The neighbor could very well do that too.

But then again, if he is able to do that then he is probably able to break a WEP anyway so you might as well befriend him and seek his loyalty.

With regards to file sharing with all on the network, you should be able to specify which usernames/computers are able to view shared folders in Windows, right?

If you share a folder containing files by right-clicking and selecting "Sharing and Security...", then check "share this folder", then click on "Permissions", you should be able to add/remove individual user access. Default is everyone.

Not sure if this only works with domain users, as a small home network usually uses a workgroup, unless you're rich/clever/bored/mad and choose to use a Domain Controller for less than 10 PC's.

Also not sure if this is only available to XP Pro users.

Hey pholks

i just got a bran new sony laptop it has a 802.11 b/n wirless card my brother lives 2 doors down and has his wireless network for open access so he lets me connect to it, But hes on holidays for 3 months and the signal strenth is low and i keep gettin disconected is there any type of a wireless attena i could get for it? at a decent price that would improve the singal strenth? thanks alot

JoNNiE D

go the other way can i see who is connected to my wireless access point

i dont have a wireless computer but a router and i have an anti-virus and a privacy guardian, is it possible for local people to see my web surfing?

How do you secure it if i pc has xp home with no permissions feature and windows media center on other pc both of which have simple file sharing enabled how do i keep the neighbors from seeing shared folders.

As a hacker I would like to tell you the dangers of wi-fi. Sure it's great. No more running network cables through the walls. Wi-Fi is a goddie zone for hackers reguardless of encryption can be hacked. So no Wi-Fi is secured to really good hackers. They snoop through all your files on no matter what computer. And yes even if you had a hacker on your wi-fi he or she is too apart your network now. They can activate your web cam and watch and hear. It is a new scarry digital age. They can install pro rat which is a spyware program that can be changed by hackers to get pass your firewall or spyware scanner. Now they can monitor your computer from any network on the internet. Right now Im on a wi-fi and it is not my own. I dont have a wi-fi on my actual cable modem. I use a router and network cables because I dont take the risk of any other hacker piggybacking on my network. I suggest through the wi-fi networks out in the trash cause If I was on your network I could even look at pictures you have saved. I could even check you internet history even your cache for that matter. Nothing is safe with wi-fi. your just inviteing hackers to your network. They can be right outside your house launching virus or even sending death threats to the government and you get visited by the cops or fbi depending where your too.

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I'll actually agree to a point. Unsecured WiFi, and WiFi using WEP encryption
is, effectively, open to anyone.

WPA encryption is much better, but it's only as good as the password you
choose. Choose a good - no, *great* - password, and WPA is safe.

Leo
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Well in response to the WPA is safe, I'd have to disagree on that. I'm pretty paranoid when it comes to securtiy especially on WI-FI reason being they arent secure at all being ur using WEP or WPA or WPA-PSK types of encryptions for the network, with the right tools they can be hacked, Someone using ARP poisoning places the hacker between you and the router making all the traffic pass thru his computer then to the router, this way makes his sniffing packets alot easier, even if your on a secured web page like ebay which the page uses https all the packets can be captured and decrypted with a program called (C&A) I'm using the begining of these letters to prevent others from using them but to the know hacker they know what C&A is. Well that is a method a hacker uses when already in a wifi network. But trying to hack a wifi network they first have to see what secured networks are in the area and they use a program called Networ Stumbler, that program detects all wifi signals in the area within range, this program can also detect wifi routers that have their SSID's disabled from broadcast if im correct. Again i'm leaving some stuff out to prevent newbie hackers from getting ideas of hacking wifi,

NetStumbler is commonly used for:

Wardriving
Verifying network configurations
Finding locations with poor coverage in one’s WLAN
Detecting causes of wireless interference
Detecting unauthorized (”rogue”) access points
Aiming directional antennas for long-haul WLAN links

once they see the AP thy want to get into (encrypted WEP WPA etc..) They run a program with the right hardware (WIFI CARD)to sniff out packets, once the packets have been capured from the target they use anogther program to crack the encryption this takes very little time, once thats done the program shows the key thats being used to get on the secured wifi network once having access to the network that you think was secured being wep, wpa etc.. they can being their attacks using easy ways like NetBios attacks or simply snoop around to get your info being credit cards, anything. So these are ways the hackers can get into the secured wifi network, again i have left things out but you get the idea on how this can be done, as far as i know the WPA2 is know to be belived to be uncrackable but i may be wrong, ill be looking into that. But if anyone has any comments feel free to msg me at [Email Address Removed] as I am also very concerned of the lack of security of the Internet these days.