Wi-Fi

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m (Wi-Fi Security Myths: fix link)
 
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== Essential Checklist ==
== Essential Checklist ==
{|
{|
-
| [[Image:CheckBox.gif]] || '''Use [[wikipedia:Wi-Fi Protected Access|WPA]] security'''. If you don't do this, assume ''you will get [[wikipedia:Hacker (computer security)|hacked]]''. ''[[wikipedia:Wired Equivalent Privacy|WEP]] is essentially worthless''. Replace wireless equipment that doesn't support WPA. Seriously. (''See [[#Wi-Fi Security|Wi-Fi Security]]'')
+
| valign="top" |  ☐ 
 +
| '''Use [[wikipedia:Wi-Fi Protected Access#WPA2|WPA2]] security'''. If you don't do this, assume ''you will get [[wikipedia:Hacker (computer security)|hacked]]''. ''[[wikipedia:Wired Equivalent Privacy|WEP]] is essentially worthless''. ''WPA-TKIP can new be cracked''. Replace wireless equipment that doesn't support WPA2. Seriously. (''See [[#Wi-Fi Security|Wi-Fi Security]]'')
 +
|-
 +
| valign="top" |  ☐ 
 +
| '''Use a ''strong'' WPA2 passphrase'''. A good way to do that is with [[wikipedia:Diceware|diceware]] words. (''See [[#What Makes for a Strong Password or Passphrase?|What Makes for a Strong Password or Passphrase?]]'') Write your passphrase on a label and stick it on the bottom of your wireless router so you won't forget it. (If someone gets to your wireless router, you are compromised regardless.)
|-
|-
-
| [[Image:CheckBox.gif]] || '''Use a ''strong'' WPA passphrase'''. A good way to do that is with [[wikipedia:Diceware|diceware]] words. (''See [[#What Makes for a Strong Password or Passphrase?|What Makes for a Strong Password or Passphrase?]]'') Write your passphrase on a label and stick it on the bottom of your wireless router so you won't forget it. (If someone gets to your wireless router, you are compromised regardless.)
+
| valign="top" |  ☐ 
 +
| '''Make your wireless [[wikipedia:Service set identifier|SSID]] unique'''. This helps avoid network collisions. A good way to do this is to use your address, phone number, and/or name for your SSID (making it easy for you to be contacted if something is wrong with your wireless network).
|-
|-
-
| [[Image:CheckBox.gif]] || '''Make your wireless [[wikipedia:Service set identifier|SSID]] unique'''. This helps avoid network collisions. A good way to do this is to use your address, phone number, and/or name for your SSID (making it easy for you to be contacted if something is wrong with your wireless network).
+
| valign="top" |  ☐ 
 +
| '''Don't bother with SSID hiding or [[wikipedia:MAC address|MAC address]] filtering'''. They ''don't do any real good'' (improve security) but they can ''cause you grief''. (''See [[#Wi-Fi Security Myths|Wi-Fi Security Myths]]'')
|-
|-
-
| [[Image:CheckBox.gif]] || '''Don't bother with SSID hiding or [[wikipedia:MAC address|MAC address]] filtering'''. They ''don't do any real good'' (improve security) but they can ''cause you grief''. (''See [[#Wi-Fi Security Myths|Wi-Fi Security Myths]]'')
+
| valign="top" |  ☐ 
 +
| '''Turn off [[wikipedia:Universal Plug and Play|Universal Plug and Play]]''' (UPnP) in your wireless router. Because most consumer-grade wireless routers lack UPnP [[wikipedia:Authentication|authentication]] they are vulnerable to attack. (''See [[wikipedia:Universal Plug and Play#Lack of Authentication|Problems with UPnP, Lack of Authentication]]'')
|-
|-
-
| [[Image:CheckBox.gif]] || '''Turn off [[wikipedia:Universal Plug and Play|Universal Plug and Play]]''' (UPnP) in your wireless router. Because most consumer-grade wireless routers lack UPnP [[wikipedia:Authentication|authentication]] they are vulnerable to attack. (''See [[wikipedia:Universal Plug and Play#Lack of Authentication|Problems with UPnP, Lack of Authentication]]'')
+
| valign="top" |  ☐ 
 +
| '''Set a ''strong'' password''' on the administration interface of your wireless router. Again, [[wikipedia:Diceware|diceware]] is a good way to do that.
|-
|-
-
| [[Image:CheckBox.gif]] || '''Set a ''strong'' password''' on the administration interface of your wireless router. Again, [[wikipedia:Diceware|diceware]] is a good way to do that.
+
| valign="top" |  ☐ 
 +
| '''Turn off remote administration.''' If your wireless router supports remote administration, ''turn it off'' (unless you really know what you're doing).
|-
|-
-
| [[Image:CheckBox.gif]] || '''Turn off remote administration.''' If your wireless router supports remote administration, ''turn it off'' (unless you really know what you're doing).
+
| valign="top" |  ☐ 
 +
| '''Configure Windows ''not'' to connect to open networks automatically.''' See [http://compnetworking.about.com/od/wirelesshotspots/qt/noautoconnect.htm Do Not Auto-Connect to Open Wi-Fi Networks]
|-
|-
-
| [[Image:CheckBox.gif]] || '''On unsecured Wi-Fi use [[#VPN|VPN]]''' (Virtual Private Networking). Otherwise your wireless traffic can be ''snooped and compromised''. ''(See [[Wi-Fi How To#Secure Internet access in a public hotspot|Secure Internet access in a public hotspot]])''
+
| valign="top" |  ☐ 
 +
| '''On unsecured Wi-Fi use [[#VPN|VPN]]''' (Virtual Private Networking). Otherwise your wireless traffic can be ''snooped and compromised''. ''(See [[Wi-Fi How To#Secure Internet access in a public hotspot|Secure Internet access in a public hotspot]])''
|}
|}
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A wireless router typically consists of three sections:
A wireless router typically consists of three sections:
-
# ''[[wikipedia:Ethernet|Ethernet]] [[wikipedia:Router|router]]'', including:
+
# ''[[wikipedia:Ethernet|Ethernet]] [[wikipedia:Router (computing)|router]]'', including:
#* [[wikipedia:Dynamic Host Configuration Protocol|DHCP]] client and server
#* [[wikipedia:Dynamic Host Configuration Protocol|DHCP]] client and server
#* [[wikipedia:Network address translation|NAT]]([[wikipedia:Port address translation|PAT]])
#* [[wikipedia:Network address translation|NAT]]([[wikipedia:Port address translation|PAT]])
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* '''Actiontec'''
* '''Actiontec'''
** [http://www.actiontec.com/products/home_networking/54mbps_eth_adapter/index.php 54 Mbps Wireless Ethernet Adapter]
** [http://www.actiontec.com/products/home_networking/54mbps_eth_adapter/index.php 54 Mbps Wireless Ethernet Adapter]
 +
 +
* '''Airlink'''
 +
** [http://www.airlink101.com/products/ap411w.php AP411W Super G Wireless Access Point] '''''multi'''''
 +
** [http://www.airlink101.com/products/ap421w.php AP421W Super G Multi-function Access Point] '''''multi'''''
 +
** [http://www.airlink101.com/products/ap431w.php AP431W Super G Multi-function Access Point] '''''multi'''''
 +
 +
* '''Alfa Network'''
 +
** [http://dplanet.biz/alfa.com/ AIP-W610H High-Power 400mW 802.11b/g Router] '''''multi'''''<br>(support for access point, client bridge, WDS, and access point + WDS modes)
* '''Belkin'''
* '''Belkin'''
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** [http://www.smc.com/index.cfm?event=viewProduct&localeCode=EN_USA&cid=5&scid=&pid=586 SMC2870W EZ Connect g Wireless Ethernet Bridge] '''''multi'''''
** [http://www.smc.com/index.cfm?event=viewProduct&localeCode=EN_USA&cid=5&scid=&pid=586 SMC2870W EZ Connect g Wireless Ethernet Bridge] '''''multi'''''
** [http://www.smc.com/index.cfm?event=viewProduct&localeCode=EN_USA&cid=5&scid=84&pid=1474 SMCWEBT-G EZ Connect g Wireless Ethernet Bridge] '''''multi'''''
** [http://www.smc.com/index.cfm?event=viewProduct&localeCode=EN_USA&cid=5&scid=84&pid=1474 SMCWEBT-G EZ Connect g Wireless Ethernet Bridge] '''''multi'''''
 +
 +
=== WISP Router ===
 +
Service from a WISP ([[wikipedia:Wireless Internet service provider|Wireless Internet Service Provider]]) may be provided through a "WISP [mode] Router", effectively a wireless host version of a wired or wireless broadband router:
 +
* ''Wired'' WISP Router
 +
** [[#Wireless Bridge|Wireless [client] Bridge]], combined with
 +
** [[wikipedia:Network address translation|NAT]] Router
 +
* ''Wireless'' WISP Router
 +
** As above, combined with
 +
** Wireless Access Point
 +
* Examples
 +
** [http://www.engeniustech.com/resources/ECB8610S%2520Datasheet.pdf EnGenius ECB-8610S]
 +
** [http://vikosmousa.com/content/view/71/86/ Vikosmo VK-100RTg WISP Router]
=== Adapter Types ===
=== Adapter Types ===
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* [[Wikipedia:Universal Serial Bus|USB]]
* [[Wikipedia:Universal Serial Bus|USB]]
* [[Wikipedia:PC card|PC Card]]
* [[Wikipedia:PC card|PC Card]]
 +
* [[Wikipedia:ExpressCard|ExpressCard]]
=== Link Calculations ===
=== Link Calculations ===
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Wireless connection speed and thruput are quite different.  The wireless may offer a connection speed of 54 Mbits/sec, but the actual thruput is considerably less, typically less than half.  That's because of management packet overhead, [[wikipedia:IEEE 802.11|802.11b]] compatibility, inter-symbol gaps, and necessary timing delays.  Also, note that wireless is [[wikipedia:Duplex (telecommunications)|half-duplex]], where only one radio in a given airspace can transmit at a time.
Wireless connection speed and thruput are quite different.  The wireless may offer a connection speed of 54 Mbits/sec, but the actual thruput is considerably less, typically less than half.  That's because of management packet overhead, [[wikipedia:IEEE 802.11|802.11b]] compatibility, inter-symbol gaps, and necessary timing delays.  Also, note that wireless is [[wikipedia:Duplex (telecommunications)|half-duplex]], where only one radio in a given airspace can transmit at a time.
-
This is taken from an [http://www.atheros.com/pt/atheros_range_whitepaper.pdf Atheros paper] with some additions and corrections.
+
This is taken from an [http://www.atheros.com/pt/whitepapers/atheros_range_whitepaper.pdf Atheros paper] with some additions and corrections.
<table border="0" cellpadding="0" cellspacing="0" style="font-size:90%; line-height:1.1em;">
<table border="0" cellpadding="0" cellspacing="0" style="font-size:90%; line-height:1.1em;">
   <tr>
   <tr>
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Replacing the standard firmware in certain wireless routers and access points (''e.g.,'' [[wikipedia:WRT54G|Linksys WRT54GL]]) can provide greatly increased functionality (''e.g.'' [[wikipedia:Hotspot (Wi-Fi)|hotspot]] capability) and improved stability, although a fair amount of technical skill may be needed. For specific features and supported products, see:
Replacing the standard firmware in certain wireless routers and access points (''e.g.,'' [[wikipedia:WRT54G|Linksys WRT54GL]]) can provide greatly increased functionality (''e.g.'' [[wikipedia:Hotspot (Wi-Fi)|hotspot]] capability) and improved stability, although a fair amount of technical skill may be needed. For specific features and supported products, see:
* '''[http://www.dd-wrt.com/dd-wrtv2/ddwrt.php DD-WRT]'''
* '''[http://www.dd-wrt.com/dd-wrtv2/ddwrt.php DD-WRT]'''
 +
** ''Recommended version as of 13 July 2010 is '''13535''' (do '''not''' trust the database!)''
** [http://www.howtoforge.com/wifi_hotspot_setup How To Setup a Wi-Fi Hotspot]
** [http://www.howtoforge.com/wifi_hotspot_setup How To Setup a Wi-Fi Hotspot]
** [http://www.sputnik.com/ Sputnik] (for setting up secure hotspots)
** [http://www.sputnik.com/ Sputnik] (for setting up secure hotspots)
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** [http://www.wifitastic.com/ WiFiTastic] (for setting up secure hotspots)
** [http://www.wifitastic.com/ WiFiTastic] (for setting up secure hotspots)
* '''[http://www.sveasoft.com/ Sveasoft]'''
* '''[http://www.sveasoft.com/ Sveasoft]'''
-
** [http://www.tinypeap.com/ tinyPEAP] (very small [[wikipedia:RADIUS|RADIUS]] server)
 
Replacing the standard firmware in certain wireless routers and access points (''e.g.,'' [[wikipedia:rtl8186|ZyxelP330W]]) can provide greatly increased functionality (''e.g.'' [[wikipedia:Hotspot (Wi-Fi)|hotspot]] capability) and improved stability, although a fair amount of technical skill may be needed. For specific features and supported products, see:
Replacing the standard firmware in certain wireless routers and access points (''e.g.,'' [[wikipedia:rtl8186|ZyxelP330W]]) can provide greatly increased functionality (''e.g.'' [[wikipedia:Hotspot (Wi-Fi)|hotspot]] capability) and improved stability, although a fair amount of technical skill may be needed. For specific features and supported products, see:
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* Free tools
* Free tools
** [http://www.kismetwireless.net/ Kismet]
** [http://www.kismetwireless.net/ Kismet]
 +
** '''[http://meraki.com/tools/stumbler/ Meraki WiFi Stumbler]''' (browser based)
** [http://www.stumbler.net/ Network Stumbler]
** [http://www.stumbler.net/ Network Stumbler]
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== Wi-Fi Speed ==
== Wi-Fi Speed ==
-
* The raw speed reported by your wireless network adapter is ''not'' necessarily a reliable indicator of actual raw speed. The reason is that transmit speed fluctuates according to the wireless error rate, and when the wireless link is idle, unrealistic speed may be reported (since no errors are occuring when the wireless link is idle).
+
* The raw speed reported by your wireless network adapter is ''not'' necessarily a reliable indicator of actual raw speed. The reason is that transmit speed fluctuates according to the wireless error rate, and when the wireless link is idle, unrealistic speed may be reported (since no errors are occurring when the wireless link is idle).
* Data can only flow on ''one'' wireless link in ''one'' direction at any one time, which means that the ''maximum data transfer rate will be well below half of the raw wireless network speed''.
* Data can only flow on ''one'' wireless link in ''one'' direction at any one time, which means that the ''maximum data transfer rate will be well below half of the raw wireless network speed''.
* To measure Wi-Fi speed, see ''[[Wi-Fi How To#Measure wireless network performance|Wi-Fi How To Measure wireless network performance]]''.
* To measure Wi-Fi speed, see ''[[Wi-Fi How To#Measure wireless network performance|Wi-Fi How To Measure wireless network performance]]''.
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** Very good, but occasionally pops up a ''nag screen''
** Very good, but occasionally pops up a ''nag screen''
*** ''[http://groups.google.com/group/alt.comp.anti-virus/msg/909eb6a8756fd6f0 How to eliminate the nag screen] (Windows XP Pro only)''
*** ''[http://groups.google.com/group/alt.comp.anti-virus/msg/909eb6a8756fd6f0 How to eliminate the nag screen] (Windows XP Pro only)''
 +
* '''[http://comodo.com COMODO Internet Security] (very good, includes very good firewall)'''
* [http://free.grisoft.com/ Grisoft AVG Free]
* [http://free.grisoft.com/ Grisoft AVG Free]
** Not quite as good, but still very good, and ''no nagging''
** Not quite as good, but still very good, and ''no nagging''
-
'''Online scanners'''
+
'''Online scanners''' (good when you think you might be infected)
* [http://housecall.trendmicro.com/ Trend Micro HouseCall]
* [http://housecall.trendmicro.com/ Trend Micro HouseCall]
* [http://www.pandasoftware.com/products/activescan/ Panda ActiveScan]
* [http://www.pandasoftware.com/products/activescan/ Panda ActiveScan]
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=== Anti-Spyware (free) ===
=== Anti-Spyware (free) ===
''Run only one resident protection at any given time.<br>(Multiple scanners are OK, and may be needed in difficult cases.)''
''Run only one resident protection at any given time.<br>(Multiple scanners are OK, and may be needed in difficult cases.)''
-
* '''[http://www.microsoft.com/athome/security/spyware/software/ Microsoft Defender]''' (still in "[[wikipedia:Development stage|beta]]")
+
* '''[http://www.microsoft.com/athome/security/spyware/software/ Microsoft Defender]'''
** Very good protection
** Very good protection
-
** Poor interface in Beta 2
 
** Only works on [http://www.microsoft.com/genuine/downloads/WhyValidate.aspx?displaylang=en "genuine" Windows]
** Only works on [http://www.microsoft.com/genuine/downloads/WhyValidate.aspx?displaylang=en "genuine" Windows]
'''Other good anti-spyware''' (''e.g., ''for on-demand scanning)
'''Other good anti-spyware''' (''e.g., ''for on-demand scanning)
 +
* [http://www.lavasoft.com/software/adaware/ Ad-Aware Free] (not effective against all threats)
* [http://www.safer-networking.org/ Spybot Search & Destroy] (not effective against all threats)
* [http://www.safer-networking.org/ Spybot Search & Destroy] (not effective against all threats)
-
* [http://www.lavasoft.de/software/adaware/ Ad-Aware SE Personal] (not effective against all threats)
 
'''Diagnostic tools for spyware'''
'''Diagnostic tools for spyware'''
* [http://www.tomcoyote.org/hjt/ HijackThis]
* [http://www.tomcoyote.org/hjt/ HijackThis]
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** [http://www.drizzle.com/~aboba/IEEE/ The Unofficial 802.11 Security Web Page]
** [http://www.drizzle.com/~aboba/IEEE/ The Unofficial 802.11 Security Web Page]
** [http://blogs.zdnet.com/Ou/index.php?p=42 Simple advice for securing your home wireless LAN]
** [http://blogs.zdnet.com/Ou/index.php?p=42 Simple advice for securing your home wireless LAN]
 +
** [http://machinedesign.com/article/bulletproof-1023 Bulletproof: Here’s how to keep hackers out of your industrial wireless networks]
=== Wi-Fi Security Myths ===
=== Wi-Fi Security Myths ===
-
* '''[http://blogs.zdnet.com/Ou/index.php?p=43 The six dumbest ways to secure a wireless LAN]''' (Wireless LAN security hall of shame)
+
* '''[http://www.zdnet.com/article/the-six-dumbest-ways-to-secure-a-wireless-lan/ The six dumbest ways to secure a wireless LAN]''' (Wireless LAN security hall of shame)
** MAC filtering (absolutely worthless)
** MAC filtering (absolutely worthless)
** SSID hiding (doesn't really work, causes needless grief)
** SSID hiding (doesn't really work, causes needless grief)
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=== WEP ===
=== WEP ===
* See [[Wikipedia:Wired Equivalent Privacy]] (WEP)
* See [[Wikipedia:Wired Equivalent Privacy]] (WEP)
-
* ''WEP can be easily cracked and is ''not'' secure. Use WPA instead.''
+
* ''WEP can be easily cracked and is ''not'' secure. Use WPA2 instead.''
** [http://www.smallnetbuilder.com/content/view/24244/98/ How To Crack WEP]
** [http://www.smallnetbuilder.com/content/view/24244/98/ How To Crack WEP]
** [http://www.securityfocus.com/infocus/1814 WEP: Dead Again]
** [http://www.securityfocus.com/infocus/1814 WEP: Dead Again]
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</table>
</table>
-
=== WPA ===
+
=== WPA/WPA2 ===
* See [[Wikipedia:Wi-Fi Protected Access]] (WPA)
* See [[Wikipedia:Wi-Fi Protected Access]] (WPA)
-
{{Tip|tiptext=WPA can be cracked if a weak passphrase is used!<br>See [[#What Makes for a Strong Password or Passphrase?|What Makes for a Strong Password or Passphrase?]]}}
+
{{Tip|tiptext=WPA-TKIP can be cracked! Use WPA2 if possible!<br>WPA/WPA2 can be cracked if a weak passphrase is used!<br>See [[#What Makes for a Strong Password or Passphrase?|What Makes for a Strong Password or Passphrase?]]}}
=== Universal Plug and Play ===
=== Universal Plug and Play ===
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==== VPN Resources ====
==== VPN Resources ====
-
* '''[http://www.vpnlabs.com/ VPN Labs]'''
+
* '''[http://tips.navas.us/2012/11/vpn.html Secure Wi-Fi with VPN]''' (how to)
 +
* '''[http://www.vpnlabs.com/ VPN Labs]''' (open community for researching, reviewing, and discussing VPN)
==== VPN Service Providers ====
==== VPN Service Providers ====
* '''[http://www.anchorfree.com/hotspot-shield/ AnchorFree Hotspot Shield]''' (ad banners)
* '''[http://www.anchorfree.com/hotspot-shield/ AnchorFree Hotspot Shield]''' (ad banners)
 +
* [http://acevpn.com/ Ace VPN] (commercial)
 +
* [http://astrill.com/ Astrill] (commercial)
 +
* [http://blacklogic.com/ Black Logic] (commercial)
 +
* '''[http://boxpn.com/ boxpn]''' (commercial)
* [http://www.hotspotvpn.com/ HotSpotVPN] (commercial)
* [http://www.hotspotvpn.com/ HotSpotVPN] (commercial)
* [http://www.iopus.com/iPig/ iPIG] (10 MB free, commercial thereafter)
* [http://www.iopus.com/iPig/ iPIG] (10 MB free, commercial thereafter)
-
* '''[http://www.jiwire.com/hotspot-helper.htm JiWire Hotspot Helper]''' (commercial)
+
* '''[http://www.privatetunnel.com/ PrivateTunnel]''' (100 MB free, pay by GB thereafter, no monthly fee)
* [http://publicvpn.com/ PublicVPN.com] (commercial)
* [http://publicvpn.com/ PublicVPN.com] (commercial)
 +
* [http://www.slickyproxy.com/ Slicky Proxy] (commercial)
* [http://vpnprivacy.com VPN Privacy] anonymous PPTP (commercial)
* [http://vpnprivacy.com VPN Privacy] anonymous PPTP (commercial)
-
* [http://www.witopia.net/ WiTopia] (commercial)
+
* '''[http://www.witopia.net/ WiTopia]''' (commercial)
 +
* [http://world-secure-channel.com/ World Secure Channel] (commercial)
=== What Makes for a Strong Password or Passphrase? ===
=== What Makes for a Strong Password or Passphrase? ===
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=== Wireless Isolation ===
=== Wireless Isolation ===
-
* If you want to open up wireless to outsiders (even just a neighbor), look for a wirelesss router with an ''isolation '' feature that blocks wireless-to-wired networking, most often found in [[#Hotspot Routers|"hotspot" routers]].
+
* If you want to open up wireless to outsiders (even just a neighbor), look for a wirelesss router with an '''isolation''' feature that blocks wireless-to-wired networking, most often found in [[#Hotspot Routers|"hotspot" routers]].
-
* If you also have wireless devices, then look for a wireless router or access point with a ''wireless isolation'' feature that blocks peer-to-peer wireless networking (''e.g.,'' [http://www.netgear.com/products/details/WG302.php NETGEAR WG302]).
+
* If you also have wireless devices, then look for a wireless router or access point with a '''wireless isolation''' feature that blocks peer-to-peer wireless networking (''e.g.,'' [http://www.netgear.com/products/details/WG302.php NETGEAR WG302]).
 +
'''''See also [[Wi-Fi How To#Two wireless networks on one router|Two wireless networks on one router]].'''''
 +
 
 +
=== Guest Account ===
 +
 
 +
A good alternative to [[#Wireless Isolation|Wireless Isolation]] is a '''Guest Account''' feature that not only isolates wireless guests from your own wireless (and wired) networking, but also can provide security ([[wikipedia:Wi-Fi Protected Access|WPA/WPA2]]) for your guests. Products with such capability include:
 +
* [http://catalog.belkin.com/IWCatProductPage.process?Product_Id=377018 Belkin N1 Vision wireless router F5D8232-4]<br>(different SSID for Private and Guests)
 +
* [http://www.myessentialssupport.com/product/?pid=ME1004-R My Essential G Router ME-1004R] (Belkin)<br>(same SSID for Private and Guests, different WPA/WPA2 passphrases)
 +
'''''See also [[Wi-Fi How To#Two wireless networks on one router|Two wireless networks on one router]].'''''
=== What is Wardriving? ===
=== What is Wardriving? ===
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** [http://www.wi-fiplanet.com/tutorials/article.php/953511 Minimizing 802.11 Interference Issues]
** [http://www.wi-fiplanet.com/tutorials/article.php/953511 Minimizing 802.11 Interference Issues]
** [http://www.networkworld.com/columnists/2004/0816wizards.html Stop the interference!]
** [http://www.networkworld.com/columnists/2004/0816wizards.html Stop the interference!]
 +
** [[wikipedia:Electromagnetic interference at 2.4 GHz|Electromagnetic interference at 2.4 GHz]]
* '''Checking for Wi-Fi networks'''
* '''Checking for Wi-Fi networks'''

Latest revision as of 15:47, 6 July 2015

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