Networking/Computing Tips/Tricks

board electronics computer data processing 50711

How can you verify your Wi-Fi is on the right channel, who else is interfering?  

We wish that was easy.  And at a normal user level it is.  First you need a Wi-Fi scanner.

The following is a growing list of Wi-Fi Scanning Utilities for various platforms.  Most all are free, at least to try.

Let us know if we are missing any.

Free Wi-Fi Scanner for Windows 10: https://www.microsoft.com/en-us/store/p/wifi-analyzer/9nblggh33n0n
Acrylic Wi-Fi Scanner (Windows): www.acrylicwifi.com 
inSSIDer: www.metageek.com 
Ekahau from Netscout (various tools): http://enterprise.netscout.com/airmagnet-wireless-design-analysis-troubleshooting-suite?ls=gppc&lsd=amm_brand_general_search_us-ekahau_general-ekahau&gclid=Cj0KCQjw24nNBRChARIsALldLD19J1BPA-Ebyd5vzb_6k0GC1y96VhhHAPzBjUq3I5SoQ0zBPs0U5JkaAsabEALw_wcB
NetStumbler: www.netstumbler.com
Lizard Systems WiFi Scanner (Windows): https://lizardsystems.com/wi-fi-scanner/
Homedale (Windows or MAC OSX): http://www.the-sz.com/products/homedale/
AirGrab WiFi Radar (for MAC OSX): http://airgrab-wifi-radar.soft112.com/
WiFi Scanners (multiple): https://play.google.com/store/search?q=wifi%20scanner
WirelessNetView: http://www.nirsoft.net/utils/wireless_network_view.htm 
Xirrus Wi-Fi Inspector: https://www.xirrus.com/inspector/
WiFiScanner: www.wifiscanner.sourceforge.net 
WiFi Scanner: www.apple.com/osx/apps/app-store 
iPhone WiFi Scanner: look for AirPort Utility at App Store: https://itunes.apple.com/us/app/airport-utility/id427276530?mt=8
Cain & Able (Windows - primarily password cracking but has WiFi tools as well): http://www.oxid.it/cain.html

To go deeper, you need a spectrum analyzer (most likely) and that topic is beyond this article.

But let's do a quick example with Wi-Fi scanning.  I am using the Acrylic Wi-Fi Scanner linked above.

Now, to get the screen I am looking at, click the three bars on the top right and select Advanced mode.

Then you can see I selected the 2.4GHz range on the lower half of the screen:

quickscan

 The top half is a list of Wi-Fi systems your computer's radio can hear (that does not mean they can hear you BTW).  The bottom half draws a picture of what channel these systems are operating on.

If you were to attend our Hands On course, you would know that in the 2.4GHz range, only channels 1,6, and 11 should be used with standard channel sizes.  Why?  Because they are the only non-overlapping channels - which is a nice way to say non-interfering.  

But you can see that we have a major offender!!  Yes, that BEAM network is on channel 4.  Some people do this because they think they are on their own channel, but here is the deal, they are interfering with everyone on channel 1 and channel 6.  And everyone on those channels is interfering with them!!  It's actually comical.

My network CellStream is happily away from that nonsense on Channel 11.

If you find you are in a situation like this, just contact your service provider (if they manage your wireless router) or look online.  Usually it is easy to configure what channel your router/access point is running on.

If you live out in the country, you may see no other systems, and truth is for you, you can use any channel you want!

A side note - see that huge signal on channel 6?  That is where most HP printers run!  

Have fun scanning and we hope this helps.  Feel free to post questions or comments.

 

Comments powered by CComment

The nicest thing you can do is use these inks to support us!  Thank you!

Support our research!

Become a Patron!

Find by Tag

4G Networks 5G Networks 6in4 6LoWLAN 6LoWPAN 802.11 802.11ah 802.11ax 802.11ay 802.11az Addressing Analysis Ansible Architecture ARP AToM BGP Bloom's Taxonomy Broadband Cable CBRS CellStream Cellular Central Office Cheat Sheet Chrome Cisco Cloud Coloring Rules Computer Consulting Course Design CPI CSR Customer Support Data Center Data Networking Decryption DHCPv6 DNS Documentation dumpcap ECMP Ethernet Ethics Flipping the Certification Model Fragmentation G-MPLS Git GNS3 Google GQUIC Hands-On History Home Network HTTPS ICMP ICMPv6 IEEE 802.11p IEEE 802.15.4 Interface Control Internet IoT IPsec IPv4 IPv6 IS-IS L2VPN L3VPN LDP Linux LLN LoL M-BGP MAC MAC OSx Macro Microsoft mininet Monitoring Monitor Mode MPLS Multicast My Room Name Resolution Netcat Netmiko NetMon netsh Networking Network Science nmap Npcap Online Learning Online School OpenFlow OSPF OSPFv2 OSPFv3 OSX OTT Parrot PIM pktmon Policy POTS POTS to Pipes PPP Profile Programming Project Management Protocol 41 PW3E Python QoS QUIC Remote Desktop Requirements RIP Routing RPL RSVP Rural SAS SDN Security Self Certification Service Provider Small Business SONET Speed SS7 SSH SSL Subnetting T-Shark TCP TCP/IP Telco Telecom 101 Telecommunications Telephone termshark TLS Tools Traceroute Tracewrangler Traffic Engineering Training Travel Tunnel Ubuntu Utility Video Virtualbox Virtualization VoIP VRF VXLAN Web Based Delivery Webex WEP Wi-Fi Wi-Fi 6 Wi-Fi 6/6E Windows Winpcap Wireless Wireless 5G Wireshark Wireshark Tip WLAN WPA2 ZigBee Zoom

Support us by clicking:

Twitter Feed