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Wireless v2
- 1. Wireless Security Hide yo kids, Hide yo Wi-Fi
- 2. Scope Home Wi-fi Public Wireless Usage
- 3. Home Wi-Fi
- 4. Wireless Threats • Exposing your home network due to low security • Unauthorized Access, Denial of Service • Packet Sniffing • Rouge AP • War Driving • Man in the Middle attacks • Stolen Information (Credentials, Bank Info, etc.)
- 5. Securing your Home Wifi • Encrypt your Wi-Fi • List of router default passwords • WEPS vs. WPS vs. WPA/2 • WEPS and WPS easily cracked • TKIP is depreciated • WPA can have handshake stolen and be brute forced (rainbow tables) • Use STRONG PASSWORDS
- 6. SSID • Always Change from the Default SSID • Do not include any identifying information • Apt #, Name, DOB, Router info etc. • Make it Hidden
- 7. MAC Filtering • A MAC address identifies the individual piece of equipment connected to your network. • You can set up to allow only certain MAC’s onto your network • *WARNING* THIS CAN BE SPOOFED
- 8. Finding Your MAC Address iOS • Settings -> • General -> • About -> • Wi-Fi Address • Android • Setting -> • Wireless and Networks-> • Wi-Fi-> • Advanced
- 9. Finding Your MAC Address (cont.) OSX • ifconfig • en0 -> ether Windows • ipconfig • Physical address Linux (Mint) • ifconfig • hwaddr
- 10. Guest Network • Creates a network separate from your normal Wi-Fi network. Removes access to file shares, network locations and devices. • Still needs to be secured. • Some router have an insecure implementation of guest networks
- 11. Firmware • Always ensure your firmware is up to date • Your router can be attacked and added to a botnet • News Article
- 12. Who’s on your network? • Monitor your home network. • How many devices are connected to it? • Wifi monitoring tools: • Xirrus • OpenNMS • Often right on your Wi-Fi router
- 13. Additional Measures • Decrease your Wi-Fi signal strength • Anti Wi-Fi Paint? • I have a feeling this will mess with cell phone reception as well, but YMMV
- 14. Public Wi-Fi
- 15. 3 Common Attacks • Rouge AP • Evil Twin • Man in the middle • Pineapple • Packet Sniffing • Wireshark • Airpcap • Mobile Charging Stations
- 17. Rouge AP • Evil Twin • Some creates a Wi-fi hotspot with the same name as the trusted public hotspot • You connect to it • You are networked with the attacker
- 18. Rouge AP • Man in the Middle • Usually starts as an evil twin attack • Rather than attack you machine directly, attacker forwards all your network traffic to wherever you wanted it to go. • Attack can intercept, decrypt or alter your packets • Stolen credentials, cc numbers etc.
- 19. Rouge AP - Pineapple • Combines Evil Twin, Man in the Middle and a whole lot more into one piece of Hardware • Karma • Your device probes for a trusted hotspot, Karma says “that’s me!” and you connect • SSL stripping (https://scotthelme.co.uk/wifi- pineapple-karma-sslstrip) • Mitigated with HSTS, but new attacks are being developed to beat this.
- 20. Beef
- 21. Packet Sniffing • Captures PCAP (packet capture) files • These can be analyzed to pull out very relevant information • MAC/IP addresses • Credentials • Websites visited • Geolocation tags • Basically anything that is passed over the network • 100% passive attack
- 22. Packet Sniffing • Wireshark example
- 23. Not really wireless, but… • Phony Mobile Charging Stations • “Juice Jacking” • Attacker sets up computer with multiple charge cables attached • When you plug in, the computer attempts to rip everything it can from inside your phone
- 25. Device Settings • Forget Wireless Connections • Turn off wifi when not in use • Turn off file/print share • Browser extensions to force SSL • Enable your Host-based firewall if you have one
- 26. Things you can do • Always Verify the name of your public network • Avoid logging into any websites while on public Wi-Fi (Social media, financial, etc.) • Try not avoid public networks • Use your cell phone • If you cant, be sure they are password protected or that are unencrypted/weak encryption • Always check for SSL connections! • USE A VPN! • Ensure OS is up to date.
- 27. VPN options Paid • KeepSolid • NordVPN • Hidemyass Free • AnchorFree • SpotFLux • Beware of free or ad driven VPN. Nothing is ever free. Implement your own • This does expose your network to the internet • OpenVPN
- 28. Thank you for coming! Please fill out a survey, check out the other Free Geek Courses, and feel free to give suggestions on other topics you would like to see or ways to improve current classes!