Vast VPN Secure VPN Proxy

The proxy domain most often refers to the IP address where the server is located. It can only "learn" the IP address of the user when processing the traffic. But in most cases it does not store such information later for security reasons.

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.

To connect to the Internet through a proxy server, you need to configure your device to use the proxy server for your network connections. Here's how to do it for different operating systems:

For Windows:

1. Press the Windows key + R to open the Run dialog.
2. Type "inetcpl" (without quotes) and press Enter. This will open the Internet Properties window.
3. Click on the "Connections" tab.
4. Click on "LAN settings" in the bottom right corner.
5. In the "Proxy Server" section, select "Use a proxy server for your LAN" and enter the proxy server address and port number provided by your network administrator or proxy service.
6. Click "OK" and close the Internet Properties window.

For macOS:

1. Open System Preferences.
2. Click on "Network".
3. Select the network connection you are using (e.g., Wi-Fi, Ethernet).
4. Click on the "Proxy" tab.
5. Select "Web Proxy (HTTP)" from the "Proxy Settings" dropdown menu.
6. Enter the proxy server address and port number provided by your network administrator or proxy service.
7. Click "OK" and close the Network preferences.

HTTP proxies are used for surfing the Internet and working with social networks. However, when using this type of proxy, the user's IP address remains unprotected. At the same time, the connection speed remains high.
SOCKS proxy are designed to use programs and visit sites anonymously. Also this type of proxy allows bypassing the resources with proxy-server protection.
To sum up: SOCKS proxies are a more advanced development compared to HTTP. However, to use SOCKS, you must know how to configure your browser and use special utilities.

You can check the validity of proxies by using special software and a proxy checker. These tools not only check if the proxy is working, but also inform you about possible blocking by various platforms and social networks. Online services (checkers) also provide information related to ping, speed, proxy anonymity level, and geo. The combination of all these data allows for the most objective assessment of a proxy server's performance.