A Detailed Guide to Different Types of Proxy Servers

A proxy server (or simply “proxy”) acts as an intermediary between a user and the internet, enabling more secure, anonymous, and sometimes less restricted access.

Because needs vary, proxies are classified in multiple ways—by how anonymous they are, who can use them, how they rotate, where their IPs come from, how they’re deployed in networks, and which protocols they support. 

This guide walks through each category so you can choose a proxy type that fits your use case and reduces avoidable risk and cost.

Note: In this article, the words “proxies” and “proxy servers” are used interchangeably.

Types of Proxy Servers in a Computer Network

Before choosing proxy types, it’s useful to understand why proxies are used in web scraping in the first place: to reduce the risk of detection, throttling, and blocking when many requests come from a single IP within a short time window.

To learn how websites detect the presence of bots, you can read our article on detecting bots using bot mitigation tools.

Understanding the different types of proxy servers starts with knowing that they can be categorized by:

Proxies can be categorized by:

1. By Anonymity Level
2. By User Accessibility
3. By the Rotation Mechanism
4. By Source of IP Addresses
5. By Implementation
6. By Protocol

Let’s explore each proxy category in detail, understanding its functionality and usability across multiple use cases.

1) By Anonymity Level

Anonymity level describes how well a proxy hides (a) your original IP address and (b) the fact that you’re using a proxy.

They are classified into:

• Transparent Proxies
• Anonymous Proxies
• Elite Proxies or High-Anonymity Proxies

Let’s understand each such proxy in detail.

Transparent proxies

Transparent proxies do not provide anonymity—they pass your real IP address to the destination. Since they make proxy usage obvious, they’re more common for caching or policy enforcement than privacy.

Anonymous proxies

Anonymous proxies hide your IP address but may still send identifying HTTP headers that hint that a proxy is in use. They’re useful when you want basic IP masking but don’t mind disclosing proxy usage.

Elite (high-anonymity) proxies

Elite proxies aim to hide both your IP and any clear signal that a proxy is being used, making them popular when you need stronger privacy or reduced detection risk.

2) By User Accessibility

User accessibility refers to who can use the proxy infrastructure. They are classified into:

• Public Proxies
• Shared Proxies
• Private or Dedicated Proxies

Public proxies

Public proxies are often free and open to anyone, usually without authentication. Because they’re shared by unknown users, they’re typically unreliable and carry a higher security risk.

Shared proxies

Shared proxies are paid, but used by multiple customers. They often strike a balance between price and performance and are usually more reliable than public proxies.

Private (dedicated) proxies

Dedicated proxies are assigned to a single user or organization, offering stronger performance consistency and improved control/security for business use cases.

3) By the Rotation Mechanism

Rotation refers to how frequently IPs change to reduce blocking and rate-limiting pressure. They are classified into: Among the different types of proxy servers, those categorized by rotation are:

• Static Proxies
• Rotating Proxies

Static proxies

Static proxies keep the same IP address for each session. They’re useful when you need a consistent identity—e.g., account management workflows—rather than high-volume crawling.

Rotating proxies

Rotating proxies change IPs per request or at set intervals. They’re commonly used in web scraping and crawling to lower the chance of detection and IP-based bans.

4) By Source of IP Addresses

This category focuses on where the IPs originate, which heavily influences speed, detection risk, and legitimacy. They are classified into:

• Datacenter Proxies
• Residential Proxies
• Mobile Proxies

Datacenter proxies

Datacenter IPs are issued from servers in data centers and are known for speed and cost-efficiency. The tradeoff: they’re easier for some sites to detect/flag as they have non-residential IP addresses.

Residential proxies

Residential proxies use IPs assigned to households. Because they look more like “real user” traffic, they’re less likely to be blocked in many scenarios—often making them a go-to choice when legitimacy matters.

Mobile proxies

Mobile proxies use IPs from cellular carriers. Because mobile IPs are dynamic and shared at scale, they can be especially effective for difficult targets.

5) By Implementation

The implementation refers to where the proxy sits and what it’s protecting—clients or servers. They are classified into:

• Forward Proxies
• Reverse Proxies

Forward proxies

Forward proxies sit between clients and the internet, fetching data on behalf of users or internal networks.

Reverse proxies

Reverse proxies sit in front of servers, handling inbound traffic and forwarding requests to origin systems. They’re widely used for security, caching, and load balancing in server architectures.

6) By Protocol

The protocol of proxies refers to the types of network protocols they support for handling traffic. They are classified into:

• HTTP Proxies
• HTTPS Proxies
• SOCKS Proxies

HTTP proxies

HTTP proxies handle HTTP traffic and are common for basic browsing and content filtering. They don’t encrypt data themselves.

HTTPS proxies

HTTPS proxies support the HTTPS protocol and add SSL encryption to ensure secure and encrypted data transmission. As a result of this process, they are slightly slower, even though they enhance security.   

SOCKS proxies

SOCKS proxies can handle various TCP/IP traffic beyond HTTP/HTTPS, such as FTP and P2P. They’re flexible but don’t provide specific performance optimizations, such as caching, which can affect speed.