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No, a router would not protect your computer from surveillance.
A router (with a firewall) can protect your computer from infiltration from the Internet.
What a router does is that it works at Layer 3 of the OSI model. The name of that layer is the network layer. The network layer handles routing and addressing (for most people that addressing protocol will be IP or Internet Protocol). A router forwards your traffic along the most efficient path with backup paths on standby when needed for when a route goes down. This applies more so for routers on Internet backbones.
Routers demarcate broadcast domains as well.
If you want some security from surveillance you will need to focus on securing your machine from fingerprinting as well encryption protocols to secure the traffic. The host will need to be secured from viruses, spyware, malware, keyloggers, and rootkits
Last edited by netwrkranger : 06-17-2008 at 09:24 AM.
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