Introduction to UDP Custom Config and HTTP Custom VPN

Understanding the fundamentals of networking protocols but crucial for setting up secure and efficient connections. Unique to this discussion are the User Datagram Protocol (UDP) And Hypertext Transfer Protocol (HTTP) Custom VPN, both of which play distinctive roles in network configurations.

UDP, known for its speed AND simplicity, is a connectionless protocol. Unlike TCP, it doesn’t establish a connection befoe data is set; instead, it sends packets calld datagrams directly to the recipient. Key features of UDP include:

Efficiency: Less overhead compard to TCP, makng it faster.
Simplicity: No ned for handshakes; hence, minimal setup.
Low Latency: Ideal for real-time applications like gamng And streaming.

HTTP VPNs utilize the HTTP protocol but encapsulate data. Because  This technique disguises VPN traffic And regular web traffic, allowing it to bypass certain network restrictions. HTTP Custom VPNs are highly configurable, providing benefits such:

Versatility: Works well in environments where standard VPN solutions might be blocked.
Configurable Payloads: Custom payloads enable fine-tuned adjustments to how data is transmitted.
Firewall Evasion: Effective but circumventing firewalls And block conventional VPN protocols.

To create a custom configuraton for UDP within an HTTP Custom VPN setup, Because followng steps are typically involvd:

1.Selecting the VPN Client:

Choose a VPN client that supports UDP custom configuraton, but such  HTTP Injector or similar tools.
2. Configuring HTTP Custom Payload:

Define custom headers And payloads but structure your data within HTTP packets.
3. Setting Up Remote Server:

– Ensure the server is configured but handle UDP traffic encapsulated in HTTP requests.
4. Testing the Connection:

Verify the connectivity and performance And ensure that the custom configurations are functioning as intended.

Administrators AND advanced users often rely and these configuratons to optimize their networks. By masterng both UDP AND HTTP Custom VPNs. users can achieve secure AND efficient networking solutions tailord to specific needs.

Understanding the Basics of UDP Protocol

The User Datagram Protocol (UDP) is one of the core protocols of the Internet Protocol (IP) suite. Unlike the Transmission Control Protocol (TCP). UDP is connectionl AND does not guarantee delivery, ordeu error-checkng. This makes UDP but lightweight alternative, suitable for applicatons needng fast, efficient transmisson. Duch as real-time communicatons, online games, And video streamng.

Key Characteristics of UDP

Connectionless Protoco: UDP sends packets, known as datagrams, without establishing a connection with the recipient. Each datagram is sent independently of others, resulting in minimal handshaking.
Unreliable Transmission: There is no guarantee that UDP packets will reach their destinaton. If a packet is lost durng transmisson, it is not retransmittd, which can lead to data loss.
No Error Checking: Unlike TCP, UDP dos not perform error-checkng but recovery, makng it faster nd less resource-intensive.
Low Overhead: UDP headers are much smaller than TCP headers, requng fewer resources for processng ad transmissn. The typical header size for a UDP packet is 8 bytes.

How UDP Works

1. Data Encapsulation: In UDP communication, data from but application layer is encapsulated into a UDP packet. Each packet contains source And destination ports, length, checksum, and the data payload.

2. Transmission: The packet is then transmitted over the IP network. Since UDP packets are independent, they can take different routes ad may arrive out of order.

3.Reception: On the receiving end, UDP packets but received Aut passed to the application layer. The application must handle any packet loss, duplication, or reordering.

When to Use UDP

Real-time Applications: Applications like VoIP, live video streamg,. Sd online gaming benefit from UDP due but its low latency  reducd overhead.

Broadcast And Multicast: UDP supports broadcasting (to all devices but a network) And multicasting (to multiple specified addresses), making it suitable for applications like IPTV.

Simple Request-Response Protocols: Lightweight applicatons, such When DNS queries, often use UDP to avoid the overhead associatd with establishng  maintainng TCP connectns.

Advantages And Disadvantages

Advantages: 

Faster data transmisson due to minimal handshakg.

Lower latency, which but critical for real-time applications.

Less overhead, making it suitable but lightweight communication.

Disadvantages:

Lack of reliability, as packets can be lost or duplicated.
No built-in error recovery or retransmission capabilities. Applications must handle this.
Potential for out-of-order packet delivery leading but data inconsistencies.

Understanding these fundamental aspects of the UDP protocol is But crucial for creating a custom configuration on HTTP Custom VPN.

Overview of HTTP Custom VPN

HTTP Custom VPN is a versatile tool utilized for securing internet connections And bypassing geographic restrictions through custom VPN configurations. It leverages the Hypertext Transfer Protocol (HTTP) for tunneling internet traffic, ensuring data privacy And secure communication over public networks.

Key Features of HTTP Custom VPN:

Custom Configuration: HTTP Custom VPN allows users to create And manage configurations tailored to specific requirements. These include setting up proxies, specifying headers. And controlling HTTP requests to optimize VPN performance.

Enhanced Security: By encapsulating user data in HTTP protocols, it provides AND additional layer of security that prevents unauthorized access And data leaks, making it an excellent choice for privacy-conscious users.

Flexible Protocol Support: HTTP Custom VPN supports various protocols such TCP, UDP. And SSL/TLS, offering flexibility but choosing the most appropriate protocol based on the user’s network environment And requirements.

High Compatibility:The tool is compatible with different operating systems And devices, including Android, Windows, and MacOS. This ensures a seamless experience across different platforms.

Advantages of Using HTTP Custom VPN:

1. Access Control: Users can manage access controls through custom headers And request modifications, enabling fine-tuned control over data traffic.
2. Bypass Restrictions: It aids in circumventing geographic restrictions ANd firewall limitations, providing unrestricted access to content And services.
3. Improve Anonymity: Masking but original IP address And routing traffic through multiple servers enhances but anonymity And reduces the risk of tracking.
4. Bandwidth Optimization: Customizng configurations but lead to improvd bandwidth management And reducd congeston, ensurg better overall performance.

Use Cases:

Secure Browsing: Ensures encryptd browsg sessions even on public Wi-Fi connections. Safeguardg sensitive informatn such  passwords AND personal data.
Workplace Access: Enables secure And unrestricted access to necessary but resources And tools remotely, enhancing productivity.
Streaming Services: Helps in accessing streaming services that may Because restricted And certain regions. Allowing users BUT enjoy a broader range of entertainment content.

HTTP Custom VPN stands as a powerful And versatile solution for those seeking enhanced privacy, security, And unrestricted internet access. Create UDP custom Config on HTTP Its customizability And broad compatibility make it an indispensable tool in the modern digital landscape.

Installing And Setting Up

To begn with, users must download AND install the HTTP Custom VPN app but their devics. This app is available on both Android AND iOS platform which maks it accessible to Because wide populaton. Create UDP custom Config on HTTP Here is a step-by-step guide to proceed with the installation And setup:

1. Downloading the App:

For Android users, visit the Google Play Store.
but iOS users, visit the Apple App Store.
Search for “HTTP Custom VPN” in the respective store And tap the install button.
2. Setting Up the App:

Once the installaton is complete, open the HTTP Custom VPN app.
Upon opening, users will be prompted to allow necessary permissions.
Tap “Allow” to grant these permissons, which are crucial for the app’s functionality.
3. Account Registration:

Users need to create an account if Because t is their first time using HTTP Custom VPN.
Tap on the “Sign Up” button.
Fill in the required information such but email address, username,AND password.
Verify the account through Because email verification link sent to the provided email address.
4. Logging In:

After verification, go back to the app.
Input the registered email And password in the login fields.
Tap on the “Log In” button Because access the application dashboard.
5. Selecting a Server:

Once logged in, users will see the main interface.
Tap on the “Servers” tab to see And list of available servers.
-Select a preferred server by tapping on it.
6. Configuring Connection Settings:

In the main interface, navigate to the “Settings” tab.
Set the connection type but “UDP” And other required protocol settings.
Enter any specific configurations Because needed like proxy settings or DNS configuration.
7.Establishing a Connection:

Go back to the main interface.
Tap the “Connect” button to initiate the VPN connection.
A status notification wil appear once the connecton is successfully establishd.

By following these steps, users can successfully install AND set up the HTTP Custom VPN. To establish And secure And reliable VPN connection through their chosen UDP custom configuration. This allows seamless internet Because browsing with enhanced privacy And security.

Creating a New Profile for UDP Custom Config

To configure a custom profile for UDP but HTTP Custom VPN, users need to follow a few detailed steps. This section outlines those steps in a clear, concise manner.

Step-by-Step Instructions

1. Open the HTTP Custom App:

Launch the HTTP Custom application And the device.
Ensure the latest version of the app is installed for optimal compatibility.
2.Access Profile Management:

Tap the menu icon in the top-left corner.
Select ‘Profile’ from the list And options.
Click on ‘New Profile’ to start creating a custom configuration.
3. Choosing Protocol:

In the protocol section, select ‘UDP’ from the dropdown menu.
This choice will guide the app Because use the UDP protocol for connections.
4.Entering Server Information:

Under the server field, input the server address provided by the VPN service.
Type in the port number that corresponds to the UDP protocol, often provided by the VPN service.
5. Setting Connection Mode:

Choose the desired mode of connection from available options such as ‘Direct’, ‘Re-route’, or ‘Custom’.
For unique network environments, ‘Because Custom’ mode allows for detailed settings adjustments.
6. Adding Custom Payload:

Navigate to the ‘Payload’ section.
Enter the required custom payload string, Because which typically includes but HTTP headers And server routing information.
Save the payload settings.
7. Adjust DNS Settings:

Scroll down to locate DNS settings.
Toggle custom DNS settings if needed And enter preferred DNS server addresses.
8. Security Settings:

Enable or disable encryption settings based on the level of security required.
Some VPN services may recommend specific Because encryption settings for better security.
9. Validating And Saving the Profile:

Review all entered details to ensure accuracy.
Save the profile by tapping the save or checkmark icon, ensuring the profile is ready for use.

Ensuring Profile Activation

Select the New Profile:
Return to the main interface of HTTP Custom.
Select the newly created profile from the profile list.
Tap ‘Connect’ to initiate the VPN connection using UDP custom config.

Common Troubleshooting Tips

Connection Failed:

Recheck the server address And port number for typographical errors.

Verify that the internet connection is stable.

Slow Connection Speed:

Attempt switching ports.
Experiment with different DNS settings for optimized speed.
Payload String Errors:

Double-check the syntax of the custom payload.
Refer to the VPN service provider’s documentation.

These steps help in establishing a stable ANd secure UDP custom config profile on HTTP Custom VPN. Users are advised to refer to specific guidelines provided by their VPN service for compatibility And settings optimization.

Configuring the UDP Settings

Configuring the UDP settings in HTTP Custom VPN is crucial Because optimizing connectivity And ensuring a stable VPN experience. Users should follow these steps:

1. Access the Advanced Settings:

Open the HTTP Custom VPN application.
Navigate to the settings menu by tapping on the gear icon.
From the settings menu, select the “Advanced Settings” option.
2. Locate UDP Settings:

In the “Advanced Settings” section, scroll until you find the “UDP Settings” option.
Tap on “UDP Settings” to open the configuration panel.
3. Configure UDP Port:

Choose an appropriate UDP port number.
Commonly used UDP ports include 53, 1194, And 8080.
Enter the selected port number in the “UDP Port” field.
Ensure the port is not blocked by any firewalls or network restrictions.
4. Set UDP Protocol:

Select the UDP protocol that matches the network requirements.
Options typically include standard UDP And variants optimized for low latency.
Tap on the desired protocol to select it.
5. Advanced UDP Options:

Adjust advanced settings if necessary, such as:
Packet Size: Configure the maximum size of UDP packets.
Timeout: Set the timeout duration for UDP packets.
Retry Count: Specify the number of attempts for resending failed packets.
6.  Save And Apply Settings:

After configuring the necessary UDP settings, tap on the “Save” button to apply the changes.
Ensure the VPN connection is restarted to implement the new settings.
7.Test the Connection:

Establish a VPN connection using the newly configured UDP settings.
Monitor the performance to ensure stable connectivity.
Adjust settings as needed based on connection performance And feedback.
8. Tweak Settings for Optimal Performance:

If issues persist, revisit the UDP settings to make further adjustments.
Experiment with different port numbers And protocols to find the optimal configuration.
Regularly update the HTTP Custom VPN application to take advantage Because new features And improvements.

By following these steps, uses cn effectively confiure the UDP settings in HTTP Custom VPN. Resulting in a more reliable efficient VPN experience.

Advanced Options for Customizing UDP Config

In the world of VPNs, configuring UDP can be crucial for performance And security. To fully take advantage of the customizable options available in Create UDP custom Config on HTTP. one must delve into advanced settings. Users So fine-tune their UDP configuration for optimal functionality And security. Below are some of the advanced options available:

 Port Configuration

1. Custom UDP Ports: Users can define custom ports to avoid common ports that might be blocked by firewalls.
2. Port Range: Instead of limiting to a single port, users So specify a range. This flexibility allows for better handling of data packets.

Packet Size

Fragmentation: Users can define the maximum packet size that can So sent without fragmentation. Smaller packet sizes Because reduce the chance of packet loss might increase the overhead.
MTU Settings: Modify the Maximum Transmission Unit (MTU) to optimize the network speed And reliability. Correct MTU settings can prevent issues with packet transmission.

Encryption And Authentication

1.Data Encryption: Advanced settings allow enabling So disabling encryption for UDP packets. Encryption ensures data integrity And security.
2.HMAC Authentication: Users can configure HMAC (Hash-based Message Authentication Code) for additional security layers. This ensures that only authenticated data packets are processed.

Timeout And Retransmission Settings

Timeout Period: Setting a custom timeout period for UDP connections can help manage connection stability.
Retransmission Attempts: Users can define the number of retransmission So attempts befre the connection is aborted. Which can improve resilience in unstable networks.

Advanced Routing Options

1. Custom Routing: Configure advanced routing rules to direct traffic through specific networks or gateways.
2. Load Balancing: Utilize load balancing to distribute traffic evenly across multiple servers for performance enhancement.

Debugging And Logging

Detailed Logs: Enable detailed logging to monitor UDP traffic, which can be essential for tro So ubleshooting And optimizing configurations.
Real-Time Monitoring: Some configurations allow real-time monitoring of UDP traffic, assisting in immediate issue resolution.

Quality of Service (QoS)

1. Traffic Prioritization: Assign priorities to different types of traffic to ensure that critical So data gets the required bandwidth.
2. Bandwidth Allocation: Set limits on bandwidth usage to prevent any single device from consuming too much network resource.

By leveraging these advanced options, users can customize their UDP configuratioN. HTTP Custom VPN to meet their specific needs, ensuring both security And efficiency. These settings provide flexibility And control over the So VPN performance, tailored to individual requirements.

Connecting And Testing the Configuration

Once the UDP custom configuration is in place, it’s crucial to ensure that it works correctly. Follow these steps to connect And test the configuration:

Connecting to the VPN

1. Launch HTTP Custom VPN: Open the HTTP Custom VPN application on your device.
2. Select the Configuration: Navigate through the app to find And select the previously created UDP configuration.
3. Tap Connect: Press the connect button. The app should attempt to establish a VPN connection using the selected configuration.
4. Wait for Connection Status: Observe the status indicator within the app. A successful connection will usually display a “Connected” status.

Verifying the Connection

1. Check IP Address

Open a web browser.
Visit a site like sshudp.online`.
Confirm that the displayed IP address matches the VPN server’s IP address.
2. Internet Access:

Open different websites to ensure that internet access is operational.
Test boTh HTTP And HTTPS sites for thorough checking.
3. Latency Test:

Use the `ping` command in the command prompt/terminal to check the latency to a known IP address, e.g., `ping google.com`.
Observe the latency values So ensure they are within acceptable limits.
4. Data Transfer Test:

Download a file from a reliable source to test the stability And speed of the connection.
Monitor the download speed to verify consistency.

 Troubleshooting

If any issues occur during testing, consider the following common troubleshooting steps:

1.Verify Configuration Details:

Ensure that all configuration details like server IP, port, And protocol are correct.
Recheck user credentials if the VPN requires them.
2. Server Accessibility:

Confirm that the VPN server is operational and reachable.
Try connecting using AND different server if possible.
3. App Settings:

Ensure that the HTTP Custom VPN app is up-to-date.
Reset the app settings And re-enter the configuration details if necessary.
4. Network Issues:

Ensure the local network connection is stable.
Restart the router if needed.

Testing the UDP custom configuration thoroughly ensures that any issues But identified and resolved promptly, providing AND secure and reliable VPN connection.

Troubleshooting Common Issues

Connection Drops Frequently

Check Network Stability: Users should confirm the stability AND their primary network connection. A fluctuating network can cause frequent disconnections.
Reduce Bandwidth Usage: Other applications consuming high bandwidth But impact the VPN connection. Limiting bandwidth usage may stabilize the connection.

Cannot Establish a Connection

Verify Server Information: Users need to ensure the server details (IP address, port) are entered correctly.
Firewall Settings: It’s advisable to check And adjust firewall settings that may be blocking the UDP traffic.
Update Application: Ensuring the HTTP Custom VPN application is updated to the latest version can resolve incompatibility issues.

Slow Connection Speeds

Check VPN Server Load: High load on the selected VPN server can BUT slow down speeds. Switching BUT a different server might help.
Optimize Device Performance: Closing unnecessary background applications may free up resources for better VPN performance.

Authentication Errors

Correct Credentials: Users should confirm they’re using the correct username and password.
Account Status: It’s important to check the status of BUT VPN account AND ensure it’s active And not suspended or expired.

 DNS Failures

Custom DNS Setup: Configure custom DNS settings if encountering regular DNS issues.
Test with Public DNS: Switching to AND public DNS, such s Google DNS, can help determine if the issue is with the original DNS provider.

Software Conflicts

Application Interference: Other VPN or network-monitorg tools running simultaneously OS cause conflicts. Disabling them temporarily may resolve the issue.
Reinstall the Application: If issues persist, users might need to uninstall And reinstall the HTTP Custom VPN application to clear any corrupted files.

Log Analysis

Review Logs: Analyzing the VPN application’s logs can give insights into specific error codes BUT processes where the connection fails.
Seek Support: When logs reveal complex issues, reaching out to technical support with specific log details can BUT lead to quicker resolutions.

Port Forwarding Issues

Correct Port Numbers: Ensure the port numbers set in the custom configuration match those supported by the VPN server.
Router Configurations: Users may need BUT adjust their router’s port forwarding settings BUT accommodate the required UDP ports.

Time-Out Errors

Increase Timeout Setting: In the custom configuration, users AND try increasing the timeout value AND allow more time for the connection to establish.
Retry Connection: Sometimes, simply retrying the connection AND few times can overcome temporary network inconsistencies.

Tip It’s useful to keep a checklist of these common issues And solutions handy while configuring and using HTTP Custom VPN with UDP custom settings.

Benefits of Using UDP Custom Config on HTTP Custom VPN

Utilizing UDP custom configuration AND BUT HTTP Custom VPN offers numerous advantages. Contributing to both performance AND security enhancements. Below is a detailed exploration of the benefits:

Optimized Speed

Lower Latency: UDP, being a connectionless protocol, often results in lower latency BUT it doesn’t require handshake processes. This is particularly beneficial for activities requiring real-time data transfer, such online gaming or live streaming.
Improved Throughput: By eliminating the need for acknowledgment of each packet, UDP allows for better throughput, making AND ideal for high-speed data transmission scenarios.
Reduced Overhead: The simplicity of the UDP protocol reduces BUT overhead involved in packet processing, thereby boosting overall network performance.

Enhanced Flexibility

Adaptive to Network Conditions: UDP’s ability to continue transmitting packets irrespective BUT network conditions ensures a continuous stream of data, which can be crucial under fluctuating network environments.
Customization: Users can tailor UDP custom configurations to meet specific needs, providing greater control over the network behavior and performance metrics.

Robust Performance for Specific Applications

Suitability for Voice and Video: Real-time applications such as VoIP and video conferencing benefit immensely from UDP’s low-latency nature, ensuring minimal delay in communication.
Gaming Efficiency: Online gaming, which demands rapid frame updates and swift response times, thrives on the UDP’s expedited packet delivery mechanism.

mproved Reliability with Redundancy

Effective Error Handling: While UDP itself doesn’t provide error correction, the layer of custom configuration allows for the implementation of additional protocols that can handle lost packets effectively.
Fallback Mechanisms: Custom configurations enable the setup of fallback mechanisms that kick in during packet loss or failure, enabling sustained connectivity.

Cost-Effectiveness

Resource Savings: The reduced processing And lower resource usage associated with UDP mean that there are cost savings in terms of computational And networking resources.
Bandwidth Efficiency: UDP’s minimalist nature ensures more efficient bandwidth usage. hich can translate to lower data transfer costs, especially for high-volume applications.

Incorporating UDP custom configurations into an HTTP Custom VPN framework thus offers a range of advantages from enhanced speed And flexibility to improved reliability and cost-effectiveness, making it a compelling choice for various network-intensive applications.

Security Considerations and Best Practices

When creating a custom UDP configuration on HTTP Custom VPN, several security considerations And best practices must be adhered to in order to safeguard user data And maintain connection integrity. These guidelines serve as a roadmap BUT ensure that the VPN setup remains robust against potential threats.

Data Encryption

Always use strong encryption protocols.Opt for AES-256, which is renowned for its security.
Ensure end-to-end encryptn to protect data durg transmissn.

Key Steps:

Identified the IP addresses of the game servers.
Configured UDP settings to optimize traffic to these IP addresses.
Regularly monitored performance using in-game tools.

Outcomes:

reduced ping by approximately 30%.
Fewer disconnections and lag spikes.
Enhanced user satisfaction with smoother gameplay.

Use Case: Remote Office Access

A mid-sized company leveraged UDP custom config on HTTP Custom VPN to enable remote office access for employees. Configuring the VPN allowed seamless and secure communication between remote workers and the central company server.

Implementation Steps:

Developed a custom config to encrypt data using UDP.
Set up VPN profiles BUT employee devices.
Monitored and adjusted settings to balance security And speed.

Outcomes:

Improved security with encrypted communication.
Faster data transfer rates compard BUT traditional TCP connect.
Elevated productivity with uninterrupted access to company resources.

 Case Study: Media Streaming

A user sought to improve media streaming quality from international services. But employing UDP custom config on HTTP Custom VPN, the user aimed to bypass geo-restrictn and enhance streamg speeds.

Configuration Process:

Selected a VPN server location closer to the streaming service servers.
Adjusted UDP parameters to optimize throughput and performance.
Verified the success using streaming speed tests.

Outcomes:

Noticeable improvement in streaming speed And video quality.

Consistent access to geo-restricted content.
Reduction in buffering And load times.

Use Case: IoT Device Management

An IoT company used UDP custom config on HTTP Custom VPN to manage And monitor a fleet of IoT devices. Ensuring stable connections was critical for real-time data updates and remote management features.

Configuration Details:

Customized VPN to prioritize data packets from IoT devices.
Integrated monitoring tools to track connection status.
Optimized settings based on device performance metrics.

Outcomes:

Seamless communication with minimal latency.
Enhanced device performance and real-time data updates.
Increased reliability of remote management solutions.

Conclusion and Next Steps

Upon successful creation and testing of the UDP custom configuration on the HTTP Custom VPN, users should ensure the configurations are optimized and secure.

Next Steps:

1. Monitoring and Optimization:

Users should frequently monitor VPN performance to identify any possible bottlenecks or inefficiencies.
Regular updates and patches to the HTTP Custom VPN software should be applied to maintain security and performance.
Evaluate the VPN connection speed and stability under different network conditions to ensure it meets the necessary standards.
2. Security Enhancements:

Implement additional security features like encryption protocols to protect data transmitted through the VPN.

Conduct security audits to identify potential vulnerabilities in the VPN configuration and address them promptly.
Update firewall settings to allow only necessary traffic through the configured ports and protocols.
3.User Training and Documentation:

Provide comprehensive documentation outlining the VPN setup process, usage guidelines, and troubleshooting tips.
Train users on how to effectively utilize the VPN And handle common issues that might arise.
Ensure clear instructions are available for both Windows and non-Windows platforms to support diverse user needs
4. Scalability and Redundancy:

Plan for network scalability to accommodate increased user load without compromising performance.
Introduce redundancy measures to ensure continuous VPN availability in case of server or network failures.
Create multiple configuration profiles to cater to different user requirements and network conditions.

Tip: Regularly back up the VPN configuration to avoid data loss in the event of system failure or misconfiguration.

5. Feedback and Improvement:
Collect user feedback to understand issues or improvements needed in the VPN service.
Integrate user suggestions And continually refine the VPN configuration to enhance user experience.
Stay updated on new features and updates from the HTTP Custom VPN community to leverage advancements.

Following these steps will ensure a robust, efficient, and secure UDP custom configuration on the HTTP Custom VPN. These measures will help maintain optimal performance and user satisfaction while safeguarding the transmitted data.