Proxy
A proxy is an intermediary server or service that sends and receives internet requests on behalf of another device, user, or system. Instead of connecting directly to a website or online service, traffic first passes through the proxy.
Proxies can mask an IP address, control access to online resources, monitor network traffic, route requests through another location, or improve network performance.
Key facts about proxies
Definition | An intermediary that routes internet requests between a user or system and their destination |
Primary purpose | Traffic routing, access control, privacy, security, or performance |
Can hide an IP address? | Yes, from the destination receiving the request |
Does it encrypt traffic? | Not necessarily |
Common types | Forward, reverse, transparent, and residential proxies |
Privacy relevance | IP masking, geolocation, tracking, and access control |
How does a proxy work?
Without a proxy, a device typically connects directly to a website or online service. With a proxy, the request first goes to the proxy server, which forwards it to the destination and returns the response to the user.
Without a proxy:
User → Website
With a proxy:
User → Proxy server → Website
Because the destination receives the request from the proxy, it may see the proxy server’s IP address rather than the user’s original IP address.
What are the common types of proxies?
Different types of proxies serve different purposes.
Forward proxy
A forward proxy acts on behalf of the user or client making a request. It can be used for access control, traffic filtering, network monitoring, or IP address masking.
Reverse proxy
A reverse proxy acts on behalf of a server rather than a user. Websites and online services commonly use reverse proxies for load balancing, caching, security, and managing access to backend systems.
Transparent proxy
A transparent proxy intercepts traffic without necessarily requiring the user to configure their device or application. Organizations and networks may use them for filtering, caching, or traffic management.
Residential proxy
A residential proxy routes traffic through an IP address associated with a residential internet connection. To the destination website, the request may appear to originate from a regular residential user.
Proxy vs. VPN: what’s the difference?
Proxies and virtual private networks (VPNs) can both route internet traffic through another server and mask the user’s original IP address, but they are not the same technology.
Proxy | VPN | |
|---|---|---|
Routes traffic through another server | Yes | Yes |
Can mask the original IP address | Yes | Yes |
Encrypts the connection | Not necessarily | Typically |
Usually covers | Specific traffic or applications | Broader device traffic |
Common uses | Routing, filtering, access control, IP masking | Privacy, secure connectivity, IP masking |
A VPN typically creates an encrypted connection between the user’s device and the VPN server. Encryption is not an inherent feature of every proxy.
How do proxies relate to data privacy?
Proxies matter for data privacy because they can change some of the information websites receive about visitors, especially their IP address.
When a proxy is used, a website may receive the proxy server’s IP address instead of the visitor’s original address. This can affect systems that rely on IP addresses for geolocation, security, analytics, fraud detection, personalization, or regional website experiences.
For example, someone physically located in one country could route traffic through a proxy located in another. A website relying on IP-based geolocation may therefore associate the visitor with the proxy server’s location rather than their actual location.
This can also be relevant when websites use location signals to determine which regional privacy notice, consent experience, or other privacy controls to display.
Depending on the circumstances and applicable privacy law, IP addresses may also qualify as personal data or personal information.
Does a proxy make you anonymous?
Not necessarily.
A proxy can prevent a destination website from directly seeing a user’s original IP address, but an IP address is only one of many signals that can be used to recognize or distinguish users.
Websites may still collect information through cookies, device identifiers, account logins, browser characteristics, and other tracking technologies. The proxy provider may also be able to observe or log traffic passing through its infrastructure.
Using a proxy should therefore not be considered the same as achieving complete online anonymity.
Related terms
IP address
A numerical identifier used by devices to communicate over an internet protocol network. IP addresses can also provide information about a user’s network and approximate location.
Virtual private network (VPN)
Technology that routes traffic through a remote server and typically encrypts the connection between the user’s device and that server.
Geolocation
The process of determining or estimating the geographic location of a device or user using information such as an IP address, GPS data, or network signals.
Personal data
Information relating to an identified or identifiable individual. Depending on the circumstances and applicable law, online identifiers such as IP addresses may qualify as personal data.
Tracking technology
Technology used to collect information about users, devices, or interactions with websites and digital services.
Frequently asked questions about proxies
A proxy can hide your original IP address from the website or service receiving the request. The destination generally sees the proxy server’s IP address instead. Other technologies and identifiers, however, may still allow a website to recognize or distinguish a user.
A proxy can change the location associated with a user’s IP address. If traffic is routed through a proxy in another country or region, IP-based geolocation may identify the proxy’s location rather than the user’s actual location.
Not necessarily. A proxy routes traffic through an intermediary, but encryption depends on the proxy technology and configuration. VPNs, by comparison, typically encrypt the connection between the user’s device and the VPN server.
In some cases. Websites and security systems may use IP reputation information, network characteristics, traffic patterns, and other technical signals to identify traffic that appears to originate from a proxy.
Adam is the Head of Digital Marketing at Clym, where he leverages his diverse expertise in marketing to support businesses with their compliance needs and drive awareness about data privacy and web accessibility. As one of the company’s original team members, Adam has been instrumental in shaping its journey from the very beginning. When he’s not diving into marketing strategies, Adam can be found cheering on his favorite sports teams or enjoying fishing.