What does it mean to hide a network route?

In discussions of anonymity, phrases like "hide the network route" and "hide the IP address" often appear.

However, hiding a network route does not mean removing all information from all parties.

In many cases, it means changing "the origin visible to the destination" or "the destination visible to parties along the path." In other words, it is an act of changing who can see what.

This article explains what hiding a network route changes, what remains, and which parties you come to trust.

What is visible in normal communication?

Normally, when you access a website, your device communicates with the destination server through your connection and your ISP's network.

The destination website can see the source IP address. The ISP and equipment on the communication path can see information such as the destination IP address, communication timing, and traffic volume.

If HTTPS is used, page body text, form input content, and similar data become harder to read along the communication path. However, HTTPS does not erase the fact of communication itself, the destination IP address, traffic volume, or timing.

Technologies for hiding the network route are used to change this visibility.

Hiding the network route means changing visibility

Hiding the network route mainly means making the relationship between the source and destination harder to see directly.

For example, when you use a VPN, the destination website sees the VPN server's IP address instead of your home IP address. From the ISP's perspective, it can see that the user is connecting to the VPN server, but it becomes harder to see the websites beyond that directly.

When you use Tor, the destination website sees the IP address of a Tor exit node. The ISP can see that you are connecting to the Tor network.

In other words, hiding the network route does not completely erase information. It changes which parties can see which information.

Changing the route with a VPN

A VPN creates a communication path from the device to the VPN server, then communicates outward through that VPN server.

From the destination website's perspective, the access appears to come from the VPN server's IP address, not from the user's home or workplace IP address.

On the other hand, the VPN provider handles information about the user's connection.

A VPN is useful when you want to make your home IP harder for the destination to see. However, you need to trust the VPN provider.

Distributing the route with Tor

Tor is a mechanism that makes it harder to directly connect source and destination by sending communication through multiple relay nodes.

Normally, communication in Tor passes through multiple nodes. From the destination website's perspective, it sees the IP address of a Tor exit node, not the user's own IP address.

Tor has a different trust model from a VPN. Instead of gathering the communication route under a single VPN provider, it divides roles across multiple nodes.

However, Tor is not a complete solution. If you log in to a real-name account, the activity is linked by the account even if the source IP is harder to see. If communication outside Tor Browser goes out, information leaks through another route.

The concrete differences between Tor, VPNs, and proxies are covered in detail in another article.

Changing what the destination sees with a proxy

A proxy is a relay server that accesses the destination on the user's behalf.

When you use a proxy, the destination website sees the proxy server's IP address.

However, there are many types of proxies, and their reliability and handling of encryption vary. Only the browser may use the proxy, while other apps communicate through the normal connection.

The proxy operator also handles information about communication.

Proxies can be useful depending on the purpose, but when using them for anonymity, you need to think carefully about the trust model.

What becomes hidden and what remains

Even when you use mechanisms for hiding the network route, not everything is hidden.

Hiding the network route is one part of anonymity. However, cookies, login state, browser information, post content, time, and past information need to be considered separately.

The party you trust changes

When you hide the network route, the party you trust changes.

In a normal connection, some information is visible to the ISP and destination service. When you use a VPN, the IP visible to the destination changes, but you need to trust the VPN provider. When you use Tor, the structure differs from a single VPN provider, but you need to understand correct Tor Browser use and the nature of exit nodes.

For anonymity, you need to look not only at "whether this tool is safe," but also at "who can see what in this design."

Hiding the network route also means changing where trust is placed.

Summary

Hiding the network route does not mean erasing all information.

It means changing the IP address visible to the destination, making the destination harder for the ISP to see directly, or making the relationship between source and destination harder to connect.

VPNs, Tor, and proxies each change how the network route appears. However, cookies, login state, browser information, post content, traffic volume, time, and past information remain as separate issues.

When thinking about anonymity, it is important not to overestimate hiding the network route.

You need to separate what you are hiding from whom, and whom you will need to trust.

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