A Detailed Guide to Different Types of Proxy Servers

A proxy server, or simply a ‘proxy,’ acts as an intermediary between the user and the Internet and facilitates secure, anonymous, and unrestricted web access.

Depending on the needs, proxies are categorized into various types. This includes their configuration, the origin of their IP addresses, the flow of traffic they support, etc.

This article gives an overview of the different types of proxy servers that you can select to avoid potential financial losses and achieve the desired outcome.

Note: Throughout this article, the words proxies and proxy servers will be used interchangeably.

Types of Proxy Servers in a Computer Network

Before knowing the types of proxies used, you have to understand why you need a proxy for web scraping.

Proxies are required to avoid detection and blocking by websites during web scraping. If a user makes more requests per IP address in a short span than is possible, then there’s a possibility of getting banned.

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

As mentioned earlier, proxies can be categorized according to various parameters.

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

Let’s explore each category of proxies in detail, understanding their functionality and usability for multiple needs.

1. By Anonymity Level

The anonymity level of proxies means how efficiently the proxies can hide the IP address and presence of proxy use from the destination server. They are classified into:

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

Let’s understand each such proxy in detail.

Transparent Proxies

These types of proxy servers do not provide anonymity; they share your real IP address with the destination server.

Since they make clear that you are using a proxy they are often used for content caching purposes rather than privacy.

Anonymous Proxies

These are the types of proxies that hide your IP address from the destination server.

Even though they offer a degree of anonymity, they might send HTTP headers that reveal the use of a proxy.

This proxy type may be suitable for users who want to avoid direct exposure to their IP but want to reveal that they are using proxies.

Elite Proxies or High Anonymity Proxies

These are among the best types of proxy that offer the highest level of anonymity as they hide both your IP address and the fact that a proxy is being used.

Since they leave no trace of proxy usage or your original IP, they are in great demand by users who need maximum privacy and security.

2. By User Accessibility

The user accessibility of proxies refers to the access of proxy servers to users. They are classified into:

1. Public Proxies
2. Shared Proxies
3. Private or Dedicated Proxies

Public Proxies

These are available to anyone as free proxies for web scraping. They do not require authentication.

Since these proxies are freely available and convenient, they tend to be less reliable and more vulnerable to security risks.

Private or Dedicated Proxies

These types of proxy servers are allocated to a single user or organization.

These proxies provide high performance and improved security and are ideal for businesses or individuals with specific security requirements.

Shared Proxies

They are more affordable than private proxies and offer a balance between cost and performance. They are also more secure and reliable than public proxies.

3. By Rotation Mechanism

The rotation mechanism of proxies is defined as how proxy IP addresses are rotated to avoid detection. They are classified into:

• Static Proxies
• Rotating Proxies

Static Proxies

These types of proxy servers maintain the same IP address for each session. They are used for tasks that need a consistent identity, such as managing social media accounts.

Rotating Proxies

These proxies change IP addresses at each request or regular intervals. They are valid for web scraping and web crawling to avoid detection and IP bans.

4. By Source of IP Addresses

The source of IP addresses means the origin of the IP addresses. They are classified into:

• Datacenter Proxies
• Residential Proxies
• Mobile Proxies

Datacenter Proxies

These types of proxies are issued from servers in data centers and are known for their speed and efficiency.

Since they have non-residential IP addresses, they are easily detected by websites.

Residential Proxies

They are the best type of proxy since they use IP addresses assigned to private residences. Because of this, websites are less likely to block them.

If tasks require a higher degree of legitimacy, then these proxies are ideal.

Mobile Proxies

These kinds of proxies use IP addresses from mobile networks. Due to the diversity and dynamism of mobile IPs, they are highly effective at avoiding detection.

5. By Implementation

The implementation of proxies can be described as the methods by which proxies handle and route traffic. They are classified into:

• Forward Proxies
• Reverse Proxies

Forward Proxies

These types of proxies are situated between the client and the Internet. They fetch data from the Internet on behalf of a user or a network.

Reverse Proxies

These proxies operate on behalf of servers. They accept connections and pass them along.

They also enhance security, load balancing, and cache static content in server setups.

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

These proxies are designed to handle HTTP protocol traffic, making them ideal for basic web browsing and content filtering.

They do not encrypt data, operate at the application layer, and are specifically tailored for managing web traffic.

HTTPS Proxies

These proxies are similar to HTTP proxies but support the HTTPS protocol, adding SSL encryption to ensure secure and encrypted data transmission.

Due to the encryption process, they are slightly slower. They also operate at the application layer, enhancing security.

SOCKS Proxies

These types of proxies can handle various types of TCP/IP traffic beyond HTTP/HTTPS, such as FTP and P2P.

They offer broad compatibility and flexibility but lack specific performance optimizations like caching, which can affect speed.

 

Frequently Asked Questions