119 lines
3.8 KiB
Markdown
119 lines
3.8 KiB
Markdown
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## Connecting to the internet
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Let's now talk about the possible dangers of connecting your hardware into the internet.
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--
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### How do we connect?
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- Wifi? Change the default password
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- Disable the WPS/smart connect on your router
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- Public wifi? Stay safe
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- On your phone? Disable the wifi if you are not using it
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- Prefer cables ALWAYS
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notes: i dispositivi wifi broadcastano i MAC ai router se non impostati per
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non farlo (esempio metro di londra)
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https://tfl.gov.uk/corporate/publications-and-reports/wifi-data-collection
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--
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## Browsing the web
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- use firefox, always
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- use firefox containers
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- check the address bar: does the web address make sense?
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- avoid google, use alternative search engines
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- check that you are not logged in automatically by Google, Microsoft and Apple
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- remove advertisements from webpages
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- Incognito mode: not what you would think it is
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Question: what is the difference between the web and the internet?
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<!-- .element: class="fragment" -->
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--
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## Useful Firefox extensions
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- [uBlock Origin](https://addons.mozilla.org/en-US/firefox/addon/ublock-origin/): remove ads
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- [LocalCDN](https://addons.mozilla.org/en-US/firefox/addon/localcdn-fork-of-decentraleyes/): avoid unnecessary 3rd party requests
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- [Multi Account Containers](https://addons.mozilla.org/en-US/firefox/addon/multi-account-containers/): filter webpages and accounts into groups
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- [ClearURLs](https://addons.mozilla.org/en-US/firefox/addon/clearurls/): removes useless tracking elements from URLs
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--
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## Domain Name System
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The DNS is the address book of the internet! When you want to connect to **lezzo.org**:
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1. Your computer asks a DNS resolver how to reach **lezzo.org**
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2. The DNS resolver replies with an IP address: 81.56.155.125
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3. The IP address is used to route your request to the server
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4. You can now communicate with the server
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--
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## Change your DNS
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By default, most computers are configured to use the DNS server provided by their Internet Service Provider (ISP), which means your ISP knows which website you visit
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<br>
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<br>
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Change your DNS to an alternative server, depending on your threat model
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--
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## Virtual Private Network
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A VPN private tunnel for your internet connection.
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- Normally, your internet traffic goes directly from your device to websites/services
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- This means your ISP can see your online activities
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With a VPN:
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- Your device connects to a VPN server first before going to the internet
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- This hides your real internet address and location to the ISP
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--
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## Why
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- You need to access geo-blocked services
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- You want to keep something private from your ISP
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- You want to protect **some** of your activities on public WiFi networks
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Question: when should you avoid a VPN?
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<!-- .element: class="fragment" -->
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--
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## TOR
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- TOR stands for The Onion Router
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- It's a FOSS tool that enables anonymous communication
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- It directs Internet traffic through a free, worldwide, volunteer overlay network
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- It conceals a user's location and usage from anyone conducting network surveillance or traffic analysis
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- The name derives from the method of layered encryption used (like the layers of an onion)
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## How TOR works
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- TOR uses a system of virtual tunnels to route your traffic
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- It randomly selects a path through the TOR network, called a circuit
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- Each node in the circuit knows only the IP address of the node before and after it
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- The data is encrypted and re-encrypted multiple times as it passes through the nodes
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- The final node (exit node) decrypts the data and sends it to its destination
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- This makes it difficult for an observer to trace the origin of the data
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--
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## When to use TOR
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- When you want to contribute to the network
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- When you need to hide your IP from multiple parties
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- When you want to access the .onion network
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- When you value anonimity as well as security
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