Qlik Sense Proxy

It depends on which browser you are using. In Opera, Chrome, Edge a proxy is configured at the level of the operating system itself. In Firefox in the settings there is a special item (in the "Privacy" section).

In UDP communication, there is no built-in mechanism to confirm if the client has received data from the server. UDP is a connectionless protocol, which means it does not establish a connection between the client and server, and therefore, it does not provide any reliability guarantees.

However, there are some techniques you can use to improve the reliability of UDP communication and get an indication that the client has received data:

1. Acknowledgment packets: The server can send acknowledgment packets after sending data to the client. The client can then send acknowledgment packets back to the server after receiving the data. If the server does not receive the acknowledgment packets within a specific timeout period, it can assume that the client has not received the data.

2. Timeout and retransmission: The server can implement a timeout and retransmission mechanism. If the server does not receive an acknowledgment packet within a specific timeout period, it can resend the data and continue to do so until it receives an acknowledgment or reaches a predefined limit.

3. Checksums or hashes: The server can send data along with a checksum or hash value. The client can then calculate the checksum or hash of the received data and compare it with the value sent by the server. If the values match, the client can be confident that it has received the data correctly.

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.

To connect to a proxy server on Linux, you can use various methods depending on your needs and the applications you want to route through the proxy. Here's a general guide on how to connect to a proxy server on Linux using the proxychains tool:

Install proxychains:
First, you need to install the proxychains tool on your Linux system. You can install it using your package manager. For example, on Debian-based systems (like Ubuntu), you can install it using the following command:

sudo apt-get install proxychains

On Fedora-based systems, you can use:

sudo dnf install proxychains

On Arch Linux, you can use:

sudo pacman -S proxychains

Edit the proxychains.conf file:
After installing proxychains, you need to edit the proxychains.conf file to configure the proxy settings. You can find the proxychains.conf file in the /etc/proxychains directory. Open the file using a text editor like nano or vim:

sudo nano /etc/proxychains/proxychains.conf

Configure the proxy settings:
In the proxychains.conf file, you need to configure the proxy settings for your proxy server. Replace the example settings with your proxy server's IP address, port, and authentication details (if required) in the following format:

strict_chain
proxy_dns

[Proxy]
type            http
server          
port            
username        
password        

[ProxyDns]
server          
port            

Save the changes and exit the text editor.

Test the proxychains connection:
To test the connection to the proxy server using proxychains, you can use the ping command:

proxychains ping 

If the connection is successful, you should see a response from the target server.

Use proxychains with other applications:

Now that you have successfully connected to the proxy server using proxychains, you can use it with other applications by prefixing the application's command with proxychains. For example:

proxychains wget 

or

proxychains curl 

This will route the traffic from the specified application through the proxy server.

Each option has its own advantages and disadvantages. HTTP is faster because it supports caching. And SOCKS provides better anonymity because it hides the headers of requested pages.