A Proxy Server acts as an intermediary server, which sits between an end user and a website or other service’s server. The primary reasons for using proxies are efficiency, privacy, and security.

When using a proxy, web traffic moves through the proxy before reaching its destination. The proxy server handles the request, filters content, scans for malware, masks the origin of the request, encrypts messages, and more. Proxies are commonly used for information security and system optimization, such as load balancing and caching similar requests for added speed. They may also serve as a firewall and handle authentication requests, shielding an enterprise’s internal infrastructure from known threats found on the external web.

However, proxy servers can have unintended consequences for security. As they obfuscate the true origin of a request, they can also mask the legitimate parties to a dialogue, exchange, or transaction. This can result in parties being spoofed or suffering a man-in-the-middle (MITM) attack.

To use a proxy server, every computer connected to the internet has a unique IP address. A web proxy also has its own IP address. By routing internet traffic via a web proxy server, the proxy’s IP address is used instead of the device’s IP address. The proxy server masks the user’s address, while still sending the same results the user would get if they were visiting web servers on their own. Additionally, a proxy server can hide the user’s location from the websites they’re visiting, encrypt their data, and block access to specific websites based on their IP addresses.

Setting up a proxy server is easy and can be done on an internal network, browser, mobile device, or computer. Paid proxy services are more suitable and safe for businesses with many devices, but free proxy services are also available. The main benefits of a proxy server include hiding the user’s public IP address, acting as a firewall and web filter, and improving speed through proxy caching.

Proxy caching stores data in a cache and then sends it to the user, improving speed as the cache is closer to the user than the content they are trying to access. With caching, web proxies can reduce network traffic to web servers and reduce network load. Proxy server caching is even more beneficial for organizations, as caches can store more relevant information, which further improves speed for everyone.

To browse privately, using a VPN like F-Secure’s MAXPROXY is the best option. A VPN hides the user’s real address from websites they visit and blocks their internet service provider from seeing their internet traffic. MAXPROXY is easy to use and offers a free trial with no credit card required.