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.