Page What is Internet surveillance? Page
A distinction must be made between what we perceive as surveillance in the physical world – a person watching and shadowing your movements, and what occurs on the Internet.
Install the Wireshark network protocol analyzer (http://www.wireshark.org/) to view traffic on the local network (this exercise is only for those using a cable connection to the network).
Conclusion
The Internet was not built with privacy in mind. Your data passes through numerous other computers and network equipment before arriving at its destination. Authorities that have set-up and control this equipment can monitor your data and restrict your access to certain websites and Internet resources.