Internet Privacy Proxies, VPNs and Tor for private communications in - - PowerPoint PPT Presentation

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Internet Privacy Proxies, VPNs and Tor for private communications in - - PowerPoint PPT Presentation

Sep 22, 2022 569 likes •685 views

Free Technology Workshop Internet Privacy Proxies, VPNs and Tor for private communications in the public Internet Organised by Steven Gordon Room RS401 9am - 12noon Friday 20 June 2014 http://ict.siit.tu.ac.th/moodle/ Demos and Tasks

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SLIDE 1

Free Technology Workshop

Internet Privacy

Proxies, VPNs and Tor for private communications in the public Internet

Organised by Steven Gordon Room RS401 9am - 12noon Friday 20 June 2014 http://ict.siit.tu.ac.th/moodle/

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SLIDE 2

Demos and Tasks

  • Software that you may use:

– Wireshark, OpenVPN, Tor Browser Bundle, PuTTY

  • Local copies of most of these are at:

– http://ict.siit.tu.ac.th/software/

  • Windows: 32-bit or 64-bit
  • OSX: Mavericks or earlier
  • Linux: all (except Tor) available via package

manager

– E.g. sudo apt-get install xxx

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SLIDE 3

Secrecy and Privacy when Browsing

  • U -- WirelessRouter -- R -- R -- ... -- R -- S
  • Capture packets on wireless router

– tcpdump -i eth0.1 -n -w /tmp/http1.cap

  • Visit website, e.g. http://sandilands.info/
  • View capture packets in Wireshark
  • Repeat, but using HTTPS
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SLIDE 4

Web Proxies

Example Proxies: http://www.vpnbook.com/ http://webproxy.net/ http://newipnow.com/ List of proxies: http://www.proxy4free.com/

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SLIDE 5

SSH and Tunnelling

  • ict.siit.tu.ac.th

– username: u5412345678 – (Replace with your student ID) – Password has been provided to you

  • Dynamic forwarding on command line, Linux/OSX:

– ssh -l u5412345678 -N -D 6666 ict.siit.tu.ac.th

  • In browser proxy settings:

– SOCKS host: localhost – Port: 6666

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SLIDE 6

SSH on Windows with PuTTY

  • PuTTY Configuration:
  • Connection -> SSH -> Tunnels

– Source Port: 6666 – Destination: ict.siit.tu.ac.th – Select “Dynamic”

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SLIDE 7

Example SOCKS Proxy in Firefox

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SLIDE 8

OpenVPN and VPNBook

  • http://www.vpnbook.com/
  • See “How-to Setup”

– Install OpenVPN client

  • Windows: 32bit (i686) or 64bit (x86_64)
  • OSX: Mavericks - Tunnelblick 3.4 beta; earlier 3.3.4
  • Ubuntu: sudo apt-get install openvpn

– Download VPNBook OpenVPN profile

  • Select a location
  • 4 prfiles to select from: try TCP 443

– Start OpenVPN with profile

  • username: vpnbook
  • password: see www.vpnbook.com

– Should see: Initialization Sequence Completed

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SLIDE 9

PPTP

  • http://www.vpnbook.com/
  • Android, IOS
  • SIIT blocks PPTP ?
  • Try with your 3G connection
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SLIDE 10

Tor

  • Install Tor Browser Bundle

– Windows, OSX, Linux – https://www.torproject.org/projects/torbrowser.html