TCP/IP (Transmission Control Protocol/Internet Protocol): a suite of communication protocols used to interconnect network devices on the internet.
HTTP (Hypetext Transfer Protocol): application-layer protocol for transmitting documents.
HTML (Hypertext Markup Language): describes the content of a webpage.
Tracing HTTP Connections to the Internet
To compromise network traffic going outside the LAN, we must intercept traffic between the client and the router.
Packets have a destination IP address of the router’s default gateway when headed out to the public Internet.
Wireshark is a popular cross-platform network analysis tool. Using Wireshark, one can easily steal:
- Website content.
- Usernames and passwords.
- Form data.
- Cookies (use the session ID to impersonate the victim)
Week 9: password theft from SSL/TLS connections
HTTP is being phased out, however about 40% of internet traffic remains unencrypted.
Decryption is infeasible, to attack SSL/TLS we should force unencrypted connections.
Big sites use HSTS (HTTP Strict Transport Security) which can get pesky. We can try to get around it.