Understanding the Differences Between SOCKs4 and SOCKs5

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We need to explore the differences between SOCKs4 and SOCKs5, the most advanced internet connection protocols today. To distinguish, grasp the knowledge about these two protocols, readers can explore the article below with Mytour.

Modern protocols like SOCKS and Proxy help make your connections through firewalls safer and more private. While SOCKS and Proxy have many similarities, SOCKS is divided into more types of protocols such as SOCKs4, SOCKs5.

What is SOCKS?

Understanding SOCKS: Secure Internet Protocol

In reality, a SOCKS server forwards TCP connections to any arbitrary IP address and provides a means to forward UDP packets. SOCKS operates at layer 5 in the OSI model: the session layer, an intermediate layer between the presentation layer and the transport layer.

Differences Between SOCKs4 and SOCKs5

Both SOCKS4 and SOCKS5 belong to the SOCKS protocol. So how do you differentiate between SOCKS4 and SOCKS5?

SOCKS4 supports only TCP applications, whereas SOCKS5 supports both TCP and UDP applications. However, SOCKS5 also supports various authentication mechanisms and domain name resolution (DNS), unlike SOCKS4. The output of a SOCKS proxy is typically SOCKS4 proxy. As a result, UDP applications are not normally supported.

This means that SOCKS5 can support any application or program that SOCKS4 supports, but not in the same way that SOCKS4 does.

For Applications

Step 1: Download FTP file through browser proxy

To download files from the FTP server, you need to enter the IP address and FTP port 808 of the server into the FTP editing frame.

Step 2: Upload FTP file through browser proxy

To upload files to the FTP server, leave the FTP editing frame blank because the IE browser will use the SOCKS4 protocol.

Open the Local Area Connection Properties dialog, then click on Internet Protocol Version 4 (TCP/IPv4) and then click on Properties.

Step 3: In the Internet Protocol Version 4 (TCP/IPv4) Properties dialog box, select Use the following DNS server address and enter the DNS address in the Preferred DNS server box.

After configuration, you can use the browser to upload files to the FTP server.

Additionally, Taimenphi also introduces readers to the article about the differences between RJ45 and RJ48 network ports. This is useful knowledge for those interested in exploring the internet network. If interested, you can refer to the differences between RJ45 and RJ48 network ports.

Frequently Asked Questions

What is the key difference between SOCKS4 and SOCKS5 protocols?

The main difference is that SOCKS4 only supports TCP applications, while SOCKS5 supports both TCP and UDP applications. Additionally, SOCKS5 offers authentication mechanisms and domain name resolution (DNS) capabilities.

Does SOCKS5 provide more security than SOCKS4?

Yes, SOCKS5 is more secure as it includes authentication methods and DNS resolution, allowing for greater privacy and flexibility in managing secure internet connections compared to SOCKS4.

Can SOCKS4 support UDP applications like SOCKS5?

No, SOCKS4 cannot support UDP applications. Only SOCKS5 supports UDP, making it a better option for users needing to manage both TCP and UDP connections.

Why is domain name resolution (DNS) important in SOCKS5?

Domain name resolution in SOCKS5 allows it to translate domain names into IP addresses, ensuring a more efficient and secure browsing experience compared to SOCKS4, which lacks this feature.

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