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I heard that WiFi signals are not encrypted and can be read. Is there possibility to encrypt signal with software or hardware? I mean if WiFi card could encrypt outgoing signal and decrypt incoming signal it would work? Does that mean router also must do same thing to talk and understand WiFi card?

P.S. I am not talking about protecting access points/hot spots, i am talking about protecting data which travels through Wi-Fi signal against packet sniffing.

asked Apr 11 '11 at 17:47

Boris_yo's gravatar image


WPA2 encrypts all data streams to and from the router to the node. :-) So, you're protecting the hotspot from people getting on it to try to snoop in the first place, and you are stopping those that are already on the network from snooping your packets. WPA2 stops Firesheep in its tracks!

(Apr 15 '11 at 02:51) djmoore711 djmoore711's gravatar image

There are ways to encrypt the router, go to router and go to wireless security, and look at wireless encryption. Set to to use WPA (preferably WPA2) (do not use WEP unless needed cause it is crackable).

answered Apr 11 '11 at 18:07

kevin's gravatar image

kevin ♦♦

edited Apr 11 '11 at 18:10

Didn't they crack WPA2 also not to long ago?

(Apr 11 '11 at 18:16) Lestat611 Lestat611's gravatar image

And what about signal that travels through Wi-Fi? Can't it be sniffed?

(Apr 11 '11 at 21:01) Boris_yo Boris_yo's gravatar image

WPA2 has not been cracked. Only WPA-TKIP was recently cracked. The data can be sniffed, but cannot be decoded without the correct encryption password

(Apr 11 '11 at 23:41) kevin ♦♦ kevin's gravatar image

Hmm them I must have mixed it up. But sooner or later they will crack it also. Hopefully they will have come up with something even more secure by then.

(Apr 12 '11 at 16:05) Lestat611 Lestat611's gravatar image

Guys but what about public routers for example in hotels on pay-per-hour basis for password? I am talking if 5 people will pay for password to access router and connect to internet. What if one of them is a sniffer? There is still risk in public router even with encryption that my data can be stolen by people who paid for internet.

(Apr 13 '11 at 06:57) Boris_yo Boris_yo's gravatar image

Get a free VPN, encrypt all packets with it

There are some providers that have a free VPN option, or you can pay for one.

(Apr 13 '11 at 21:35) kevin ♦♦ kevin's gravatar image

@Boris_yo, if they are using WPA2 you are safe, other wise get a good VPN to save your shuttled data.

(Apr 15 '11 at 08:49) djmoore711 djmoore711's gravatar image
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As long as your WiFi router is password protected then the transmission is encrypted. If you did not set a password or had to enter a password to connect to your WiFi then it is not encrypted.

WPA2 is the most secure. WPA is the second best option. And WEP is the least secure.

answered Apr 11 '11 at 18:11

Lestat611's gravatar image


edited Apr 11 '11 at 18:15

And what about signal that travels through Wi-Fi? Can't it be sniffed?

(Apr 11 '11 at 21:02) Boris_yo Boris_yo's gravatar image

Yes it can be sniffed but unless you have the key it won't do you any good.

(Apr 12 '11 at 16:07) Lestat611 Lestat611's gravatar image

Do you know how many days it would take to decrypt signal?

(Apr 14 '11 at 13:39) Boris_yo Boris_yo's gravatar image

The only tactic of getting the information from a encrypted wifi from sniffing is through rainbow tables, dictionary words and brute force. So it is a reminder to set strong password

(Apr 14 '11 at 18:04) kevin ♦♦ kevin's gravatar image
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Asked: Apr 11 '11 at 17:47

Seen: 1,878 times

Last updated: Apr 15 '11 at 08:49