Ubuntu SOCKS5 Proxy Server

Proxy servers are of the following types:
FTP proxy designed to send data to FTP servers.
CGI proxy, which is used to browse web services in a browser. You do not need to configure any settings. All actions are performed anonymously. Often such proxies are designed in the form of a page where you have to specify the address of a desired site.
SMTP, POP3 and IMAP proxy are designed for sending and receiving email.
HTTP and HTTPS proxies are for scrolling web services.
Socks proxy are used as an anonymizer. No one will know about the user's actions.

In a local network, you will need two computers to do this. One will be used as a proxy server, the other as a client. Then you need to activate the proxy on the server. And on the client PC - choose to access the Internet via a local network connection (i.e. from the server). Another option is to use a web server like Nginx.

To check if a port is available over UDP, you can try binding to the port for a short period. If the binding is successful, the port is available. If it fails, the port is already in use. Here's a simple example in Python:

import socket

def is_port_available(port, host='127.0.0.1', timeout=2):
    with socket.socket(socket.AF_INET, socket.SOCK_DGRAM) as sock:
        try:
            sock.bind((host, port))
            sock.settimeout(timeout)
            return True
        except OSError:
            return False
        finally:
            sock.close()

if __name__ == "__main__":
    port = 12345
    if is_port_available(port):
        print(f"Port {port} is available.")
    else:
        print(f"Port {port} is not available.")

In this example, the is_port_available function creates a UDP socket and attempts to bind to the specified port and host. If the binding is successful, the function returns True, indicating that the port is available. If the binding fails, the function returns False, indicating that the port is already in use.

ProxyMaster is designed to help users manage and automate the process of using multiple proxy servers, making it easier to rotate through proxies and maintain a stable connection.

ProxyMaster offers features such as:

1. Proxy rotation: Automatically switch between a list of proxy servers to maintain a stable connection.

2. Proxy testing: Test the speed and reliability of each proxy server in your list.

3. Browser integration: Integrate with popular web browsers like Chrome, Firefox, and Internet Explorer.

4. Scheduler: Schedule proxy rotation and testing tasks to run at specific times or intervals.

5. Logging: Keep a record of your proxy usage and any errors or issues encountered.

The reason for the lack of connection to the network can be due to incorrect proxy settings, that is, incorrect IP addresses were entered or specified, or the server simply does not work. Users also often forget that proxy settings must be disabled.