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My web backend already handles real-time WebSocket traffic and device-to-server messaging, but the client management module now needs immediate attention. The current codebase shows signs of SQL injection issues and server misconfigurations, and an initial scan hints at possible backdoors. Here’s what I need you to do: • Conduct a full security audit across the PHP + MySQL stack (running on Apache in a XAMPP-style setup) as well as the Node.js WebSocket layer. • Isolate and remove any backdoors, patch every SQL-injection entry point you uncover, and fix configuration mistakes that could expose the server. • Redeploy the cleaned code on a fresh, standard Linux server image, migrate the database where necessary, and confirm that all WebSocket real-time features reconnect flawlessly. • Stress-test the updated system—especially the client management workflows—to be sure performance and stability match production expectations. • Deliver a concise report summarising every vulnerability found, the patch applied, and post-deployment test results. I’ll provide SSH access to a staging machine that mirrors production, along with the existing repositories and deployment scripts. Once your report is approved, we’ll schedule a final production push. If you’re comfortable diving deep into native PHP, MySQL/MariaDB, Apache configs, and Node.js websockets, let’s lock this down and get everything back online securely.
Project ID: 40205886
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90 freelancers are bidding on average $481 USD for this job

With my extensive 18 years of web and app development experience, I am confident in my ability to not only secure your PHP real-time system but also identify and rectify any existing vulnerabilities. My team at CnELIndia has a proven track record of delivering projects efficiently and within budget, and I believe we have the skills, aptitude, and dedication to do the same for you. Having worked with technologies similar to those involved in your project, including native PHP, MySQL/MariaDB, Apache configs, and Node.js websockets, I am well-equipped to conduct a thorough security audit across your entire stack. My priority lies in identifying and eliminating possible backdoors, patching SQL-injection entry points, fixing configuration errors that could compromise your server while ensuring that all WebSocket real-time features reconnect seamlessly. Post-review, I will not only provide you with a detailed vulnerability report but also deploy the cleaned code on a fresh Linux server image while flawlessly migrating the database as required. Additionally, I will rigorously stress-test the system's performance and stability to ascertain its compatibility with production expectations. With both security and functionality intact harmoniously. With CnELIndia at your disposal, rest assured that we will 'lock this down' effectively to ensure a robust and secure backend for your real-time system. I look forward to assisting you in this crucial endeavor!
$500 USD in 7 days
9.0
9.0

I have extensive experience in PHP, Linux, Web Security, Software Testing, and Apache, making me a great fit for the "Secure & Redeploy PHP Real-Time System" project. Rest assured, I am confident in my ability to conduct a thorough security audit, remove backdoors, patch SQL-injection vulnerabilities, and ensure seamless redeployment on a standard Linux server. Your satisfaction is my top priority, and I am willing to adjust the budget after discussing the full project scope. Let's discuss the details and get started promptly. Please review my 15 years of experience on my profile. Looking forward to hearing from you.
$525 USD in 10 days
8.7
8.7

I have over 14 years of experience tackling complex web and app development projects like yours. I possess a profound understanding of both PHP and MySQL, which will be instrumental in conducting an exhaustive security audit of your PHP + MySQL stack to identify and resolve the SQL injection vulnerabilities you mentioned. If we face any challenges with your server's configuration, know that I’m adept at handling such issues, making me a perfect fit for your project. Our journey doesn’t end there - having worked extensively with Node.js/MySQL/Apache, I can also isolate and remove any backdoors found, ensuring a safe redeployment of the system on a fresh Linux server. What sets me apart is my meticulousness - I won't stop at simply delivering cleaned code; instead, I’ll thoroughly stress-test the entire system to ensure it performs flawlessly. Post-deployment, I provide comprehensive reports that document every vulnerability discovered along with the corresponding patch applied and detailed test results. With my broad skill set, ongoing post-launch support and dedication to delivering high-quality results efficiently and effectively come naturally to me. Let's secure your system and get everything back online securely!
$500 USD in 7 days
8.4
8.4

I am an experienced PHP/MySQL and Node.js developer with a strong background in web security and server hardening. I can perform a thorough audit of your PHP backend, MySQL database, and WebSocket layer, patch all SQL injection vulnerabilities, remove any backdoors, and fix server misconfigurations. I will redeploy the cleaned system on a fresh Linux environment, ensure real-time WebSocket functionality works flawlessly, and conduct stress tests to confirm performance and stability. Finally, I will deliver a clear, actionable report documenting all vulnerabilities found, fixes applied, and post-deployment verification results.
$500 USD in 7 days
8.3
8.3

⭐⭐⭐⭐⭐ Secure Your WebSocket Client Management with Expert PHP & MySQL Solutions ❇️ Hi My Friend, I hope you're doing well. I've reviewed your project needs and see you are looking for a secure solution for your WebSocket client management module. Look no further; Zohaib is here to help you! My team has successfully handled 50+ similar projects focused on security audits and backend improvements. I will conduct a thorough security audit, fix vulnerabilities, and ensure your system is robust and secure. ➡️ Why Me? I can easily tackle your project as I have 5 years of experience in PHP, MySQL, and Node.js. My expertise includes security audits, SQL injection prevention, and server configuration. I also have a strong grip on related technologies, ensuring the best results for your project. ➡️ Let's have a quick chat to discuss your project in detail. I’d love to show you samples of my previous work and how I can help you achieve your goals. Looking forward to our chat! ➡️ Skills & Experience: ✅ PHP Development ✅ MySQL Database Management ✅ Node.js WebSocket Integration ✅ Security Audits ✅ SQL Injection Prevention ✅ Apache Configuration ✅ Code Refactoring ✅ Vulnerability Assessment ✅ Stress Testing ✅ Server Deployment ✅ Database Migration ✅ Reporting & Documentation Waiting for your response! Best Regards, Zohaib
$350 USD in 2 days
7.8
7.8

Hello, I have 10 years of experience in PHP, MySQL, and server security. I will conduct a comprehensive security audit of your stack, isolating and fixing vulnerabilities. Backdoors will be removed, and SQL-injection points patched for enhanced security. Your system will be redeployed on a fresh Linux server and tested for WebSocket functionality. A detailed report of vulnerabilities and resolutions will be delivered. Regards, VishnuLal NB.
$600 USD in 2 days
7.7
7.7

Hello We can perform a deep security audit of your PHP/MySQL and Node.js WebSocket stack, identify and eliminate backdoors, patch all SQL injection points, and harden Apache and server configurations. After cleanup, we will redeploy on a fresh Linux environment, securely migrate the database, and verify that all real-time WebSocket features reconnect and function reliably. We’ll also run stress tests on client management workflows and provide a clear report detailing vulnerabilities found, fixes applied, and post-deployment results. Best regards, Ambient Infotech
$500 USD in 8 days
7.8
7.8

Hello, With over 8 years in the industry, my team of senior mobile app developers and I have been dedicated to delivering high-quality results incorporating MySQL and PHP. We have successfully developed and deployed more than 120 applications, significant to note, many of which involved penetrating depth into native PHP such as your project entails. Your project's major call for concern is the system's security glitches, which precisely aligns with our core competency. Our focus has always been on guaranteeing clean codes that are secure from any vulnerabilities like SQL injection and backdoors by conducting thorough audits. The aim is to mitigate any potential risks that could hinder performance or compromise user data. Furthermore, our proficiency extends beyond PHP and MySQL; we have extensive experience working with different server set-ups including Apache (which very much relevant to your current stack) and even maintaining required database migrations in Linux environments as specified in your project. Our promise remains reliable execution and meeting every deadline - which serves strategic partners like you best! " In conclusion, Saifal provides a seamless service addressing identified pain points while embracing a collaborative process that values communication along all the phases of the project! My team and I would be honored to leverage our extensive skill set in securing your system, delivering top-tier results, an Thanks!
$250 USD in 8 days
7.3
7.3

Hi, We’ve developed multiple real-time web apps with PHP and Node.js, including a fully-fledged product that handles 1 million messages daily. We’re experts in WebSocket servers, server management, and security, and we’ve successfully resolved critical issues like SQL injection and server misconfigurations in the past. For your project, we’ll conduct a thorough security audit of both the PHP and Node.js components, ensuring that all vulnerabilities are identified and addressed. We’ll also implement additional security measures, such as Web Application Firewalls (WAF), to further protect your application. Let’s schedule a 10-minute introductory call to discuss your project in more detail and ensure I’m the right fit for your needs. I’m ready to start immediately and can dedicate 20 hours per week at the same rate. Best regards, Adil
$550 USD in 7 days
7.3
7.3

Hi, I have 10 years of experience and knowledge as system administrator setup and management of different Linux Web Hosting Servers, AWS servers,Cloud Servers, GPU Servers, Server Monitoring, Server Security, Server Optimisation, Mailing Servers, Email Marketing, SSL, DNS, Apache, Nginx, etc with Cpanel, Plesk, Virtualmin or other panels. Services such as cPanel/WHM, Plesk, Virtualmin LAMP Stack, Tomcat, MySQL/MariaDB, Zimbra, Postfix mail server, Mailenable, smarter mail, MS SQL,AWS , etc. Please discuss to start. Thank you
$250 USD in 1 day
7.6
7.6

Hi there, Your project to secure and redeploy your PHP real-time system with WebSocket traffic truly aligns with my expertise. I understand the urgency and critical nature of patching vulnerabilities, removing backdoors, and ensuring seamless real-time functionality. - Conduct a comprehensive security audit across PHP, MySQL, Apache, and Node.js WebSocket layers. - Isolate and patch all SQL injection points and remove backdoors. - Redeploy on a clean Linux server, ensuring flawless WebSocket reconnections. - Perform stress tests on client management workflows for stability and performance. - Provide a detailed report of vulnerabilities found, fixes applied, and test outcomes. **Skills:** ✅ Web Security & PHP/MySQL hardening ✅ Apache server and configuration optimization ✅ Node.js WebSocket troubleshooting & real-time testing ✅ Linux server deployment & migration ✅ Security audit reporting and vulnerability patching ✅ Performance & stress testing **Certificates:** ✅ Microsoft4 Certified: MCSA | MCSE | MCT ✅ cPanel4 & WHM Certified CWSA-2 I am ready to start immediately and deliver a secure, stable redeployment within 7 days. Could you specify the current PHP and Node.js versions running on the staging environment? Thanks,
$750 USD in 7 days
6.7
6.7

Hello googlec1, I checked your project, and it looks interesting. This is something we already work on, so the requirements are clear from the start. We mainly work on PHP, Linux, Web Security, Software Testing, Apache, MySQL, Node.js, Web Development, System Administration We focus on making things simple, reliable, and actually useful in real life not overcomplicated stuff. Let’s connect in chat and see if we’re a good fit for this. Best Regards, Ali nawaz
$250 USD in 4 days
6.3
6.3

Coming on board with over 12 years of expansive full-stack software engineering experience, I harness depth and proficiency in MySQL, Node.js, PHP, and Web Security to assuage your current challenges. With sojourn in the realms of WordPress, Laravel, ReactJs and E-commerce —among others— I possess complete knowledge of the task at hand. Having proficiently developed websites, applications and products from scratch for different industries, I have not only understood the demanding requirements of complex systems but also ensured flexibility under stress. As an ardent software engineer with a passion for implementing secure and effective solutions, the optimization and fortification of your real-time PHP system align impeccably with my skillset. I will not only uncover vulnerabilities in your codebase through rigorous security auditing but will also isolate backdoors, dismantle SQL-injection entry points, amend server misconfigurations to ensure comprehensive redevelopment. Ever adhering to robust standards augmented by cognitive approaches ensures that I can smoothen all architectural discrepancies while migrating your database from its current state to a standardized Linux server image. My dedication to thoroughness reflects in my detailed reports that will summarize each vulnerability found during auditing along with applied fixes for your convenience.
$250 USD in 7 days
7.0
7.0

With nearly a decade of experience in web development, I believe I possess the perfect blend of technical knowledge and practical experience required to address the issues you've highlighted in your project. My proficiency in native PHP, MySQL/MariaDB, Apache configurations would come to the fore in performing a comprehensive security audit across your stack to isolate and remove any hidden backdoors, patch SQL-injection vulnerabilities and rectify any server misconfigurations. Rest assured that I would put in my best efforts to secure your real-time system. Moreover, my familiarity with Node.js websockets provides me an holistic view on your project by not just securing the real-time system but also identifying areas where configurations can be improved for enhanced performance and stability. The stress testing phase will allow me to ensure that post fixing all issues, the system matches all expected production benchmarks. Finally, as a committed professional with an eagerness to exceed client expectations, I'll ensure that in addition to delivering a secure and redeployed codebase, you receive a detailed and concise report cataloging vulnerabilities identified and patched, along with post-deployment test results. Let's take this opportunity to leverage my skills to give your system an airtight security framework while you focus on core aspects of your business.
$400 USD in 15 days
6.2
6.2

Hi! I specialize in securing and hardening PHP + MySQL systems with real-time WebSocket integrations, and I’ve spent 9+ years patching vulnerabilities, fixing server configs, and redeploying production-ready applications. Here's how I can help: * Perform a full security audit of your PHP, MySQL, Apache, and Node.js WebSocket layers * Identify and remove any backdoors, patch SQL injection points, and fix misconfigurations * Redeploy the cleaned system on a fresh Linux server and migrate the database safely * Test all client management workflows and real-time features for stability under load * Provide a detailed post-deployment report with vulnerabilities fixed and tests passed Do you want me to also harden the WebSocket layer against future attacks, or focus solely on current vulnerabilities and redeployment?
$500 USD in 7 days
5.8
5.8

Hello, hope you're doing well I can perform a full security audit and hardening of your PHP/MySQL and Node.js WebSocket stack, remove any backdoors, patch SQL injection points, fix server misconfigurations, and redeploy on a clean Linux environment. You’ll receive a clear report of vulnerabilities, fixes applied, and post-deployment test results, with all real-time features fully validated. Regards, Webzone Network
$300 USD in 2 days
5.5
5.5

As a seasoned US-based penetration testing expert with over seven years of experience, fortifying and securing code is my bread and butter. I’ve got a strong grip on the backend technologies you are currently using - PHP, MySQL and Node.js - as well as having a detailed understanding of Apache configurations. My toolset includes popular automated scanners like Invicti, Nmap and OpenVAS, which I'll utilize for a comprehensive security audit. What sets me apart is my ability to go beyond simple bug fixing and provide detailed reports with remediation roadmaps. My commitment towards understanding your needs goes far beyond patching SQL-injection entry points or eliminating backdoors. I'm a certified ethical hacker (CEH), Offensive Security Certified Professional (OSCP), PtAI Professional Penetrator (PNPT), Certified Information Systems Security Professional (CISSP) and eLearnSecurity Web Application Penetration Tester (eWPT) among others whose vast skill set allows me navigate through complex systems in the effort to offer stability and reliability even under stressful situations.
$700 USD in 7 days
5.6
5.6

✋ Hi there. I can secure your PHP real-time system, fix vulnerabilities, and redeploy it on a fresh server while ensuring WebSocket features work flawlessly. ✔️ I have strong experience auditing PHP and MySQL applications, patching SQL injection points, removing backdoors, and correcting server misconfigurations. In a previous project, I secured a mixed PHP and Node.js real-time system, performed full security checks, and redeployed it without downtime. ✔️ For your project, I will audit the PHP backend, MySQL database, and Node.js WebSocket layer, remove any backdoors, patch vulnerabilities, and fix configuration issues. I will migrate the database to a clean Linux server, redeploy the code, and ensure all real-time client management workflows reconnect reliably. ✔️ I will also stress-test the system, confirm stability and performance, and deliver a concise report detailing vulnerabilities found, patches applied, and test results. Let’s chat so I can review your staging setup and get started on securing and redeploying the system. Best regards, Mykhaylo
$500 USD in 7 days
5.5
5.5

As an experienced and reliable web developer encompassing MySQL, Node.js, PHP, and software testing to name a few, I strongly believe I am the ideal candidate for your project. With over 8 years of industry experience and a demonstrated focus on client satisfaction, my technical skills are perfectly tailored for your web backend overhaul needs. Not only can I carry out the full security audit across your entire PHP + MySQL stack and Node.js WebSocket layer, but I am also highly proficient in spotting and isolating vulnerabilities like SQL injections and backdoors. I assure you that any loopholes or misconfigurations that could expose your server will be thoroughly investigated and resolved for an airtight solution. Furthermore, my familiarity with Apache configuration as well as my knack for stress-testing systems will be invaluable in deploying the cleaned up code onto a fresh Linux server image while ensuring all real-time features function optimally. All tasks will be accompanied by a concise report documenting every vulnerability found and security patch applied along with detailed test results to guarantee a sturdy system post-update. Let's dive deep and lock this down together to get everything back online safely!
$250 USD in 7 days
5.4
5.4

I understand the urgency and complexity of securing a real-time PHP and Node.js system with existing vulnerabilities. In a similar project, I audited a PHP/MySQL app with SQL injection flaws and hidden backdoors, then cleaned and redeployed it on a fresh Linux server while preserving real-time socket connections. I’ll start by scanning the PHP and MySQL code for injection points and backdoors, then review Apache and Node.js WebSocket setups for misconfigurations. After cleaning, I’ll migrate the database safely and verify every WebSocket client reconnects smoothly. For stress testing, I suggest using real-world client management scenarios to ensure the system holds under load. Do you have specific WebSocket message volumes or client concurrency targets to simulate? Also, were any runtime security measures like WAF or fail2ban in place before? This helps me focus on relevant attack surfaces. Once complete, I’ll deliver a clear report covering each fix and test outcomes. I’m ready to start the audit and get your system locked down immediately.
$750 USD in 7 days
5.2
5.2

Singapore, China
Member since May 30, 2025
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