Birmingham City University Department of Computing Telecoms and

Birmingham City University Department of Computing, Telecoms and Networks Duncan Maidens duncan. maidens@bcu. ac. uk Associate Prof CAS West Midlands Regional Centre

Networks How to be careful using them! Packet Tracer – Network Simulation.

1. Find Your Way around CAS-FULL-hack. pkz • Ann’s Cafe • Bob’s House • Internet Service Provider • Internet

Three important checks

Surf the Web • From a laptop in the cafe type www. mybank. com into the web browser

Find the web Server and the web page • Locate the web server • Find the web page • View the contents of the pages.

Follow the simulation Select • Simulation mode • HTTP then • Surf the web Simulation mode HTTP Surf the web

Surf the Web • From a laptop in the cafe type www. bcu. ac. uk into the web browser • Locate the web server • Find the page with the links • Follow the link to www. mybank. com

Follow the simulation Select • Simulation mode • HTTP then • Surf the web

What happened ? • Where is this site ? • How did we get there ? • Use the simulation Mode ? • Look for IP addresses ? • Investigate the html of the bcu page?

HTML How to provide Hyper Links <a href="https: //www. w 3 schools. com/html/">Visit our HTML tutorial</a> Where you are linked to What you see on the web site

Hotspot spoofing • Turn off Ann’s Café Router • Turn on Bobs Rogue Router • From Ann’s café go to www. mybank. com • Can you explain DNS spoofing ?

What Next – for Packet Tracer Become a School Cisco Academy for Free • Install Packet Tracer Across your school • Labs and course materials to teach networking KS 1 -4 • Many other free IT courses included (Python, Linux, C, C++, Cyber Security) • Visit http: //cs. co/Computing 4 Schools. Programme to learn more and apply. If you just want to have a look at Packet Tracer Enrol on a course for free. • http: //cs. co/CASIntro 2 PT Packet Tracer file for this activity is available through the course. Any questions • duncan. maidens@bcu. ac. uk