Ongoing Linux Server Hardening

@vili1977

Hello. I would like to help you with secure/install CSF/block bot traffic/stop ddos attacks and optimization memory/php/apache/mysql issue. I have experience. Please read my feedback. Thank you.

@kuldeepvk

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

@ashishsharma648

Hi i'm Ashish, i'm a DevOps Engineer with more than 4 years of experience with Linux Server Hardening I can surely help you out with your this project please share more details in chat so that we can start immediately, i'm waiting for your reply Thanks

@zulqrn

Hi there, I 'm a System & Network Administration with solid 7 years of experience. I would like to assist you in this. Let me know a good time if we can discuss. Thanks !

@Web1devloper

With my extensive experience in Linux systems, particularly Ubuntu and CentOS which are the major distributions in your fleet, coupled with my proficiency in Apache, DNS, and VPS management, I am excellently equipped to carry out all necessary tasks for your project. The main priority of tracing and shutting down the DNS amplification flood will be handled both swiftly and skillfully. I will not only patch or re-configure the resolver but also implement measures to prevent any similar future occurrences. Looking into the ongoing scope, I assure you of rigorous package updates and foolproof hardening techniques that include tight SSH configuration as well as well-designed iptables/ nftables/ firewalld rules. My deep understanding of lightweight yet efficient tools like Fail2ban, CSF, Snort or Suricata is another facet to be utilized for your project. Finally, guaranteeing zero avoidable downtime throughout the process is an absolute commitment from my end. With a solid performance record that spans over 8 years in the industry, I'm confident that my skills would set your infrastructure on a positive path - poised for regular audits,and automated backups. Thank you for considering me; let's have a conversation on how best we can fortify your fleet!

@deepuhooda456

I am a Linux-focused security freelancer with hands-on experience securing mixed-distribution environments (Ubuntu, CentOS, AlmaLinux) in production. I can immediately triage and mitigate the DNS amplification attack by tracing the abuse vector, locking down recursion, and validating the fix with controlled testing—without impacting service availability. Beyond incident response, I routinely harden servers end to end: applying safe kernel and package updates, enforcing SSH best practices, implementing clean and auditable firewall policies (iptables/nftables/firewalld as appropriate), and deploying lightweight, production-safe monitoring such as Fail2ban and Suricata where it adds value. You will receive a clear hardening report and change log, with all actions performed using a zero-avoidable-downtime approach. I’m comfortable owning long-term server security and am happy to continue with audits, backups, and infrastructure improvements once the immediate issue is resolved.

@egubert

I will be happy to check your powerdns or bind configuration, to assure it's secure. I have long experience with DDOS attacks , also at the victim side, where your servers are probably final UDP packets.

@expertshopify

Hi, I have done some great security project very similar to this one. I would like to talk to you about linux hardening. Lets talk Momin

@dobrorodniy

Hello. I can help you with this project immediately. I will complete this task as quickly and qualitatively as possible. About me: My name is Oleksandr. I am a sysadmin with 20 years of experience. My core competencies are Linux and FreeBSD. I have experience in general system administration, mail servers, web security, VPN, VOIP, LAMP, Cloud services, virtualization. Thank you for your time and consideration.

@cybexsoftadmin

Hello, I’m a Linux infrastructure and security engineer with hands-on experience securing mixed-production environments (Ubuntu, CentOS, AlmaLinux) across dedicated servers and VPS fleets. Immediate priority: I can quickly trace and stop the DNS amplification attack, identify the abuse vector, lock down the resolver (disable open recursion, apply rate limits), and verify the issue cannot be reproduced—without disrupting production traffic. Ongoing scope: I’ll take ownership of your server security posture by: - Applying kernel and package updates safely - Hardening SSH (keys, rate limits, access control) - Implementing clean, production-safe iptables / nftables / firewalld rules - Deploying lightweight monitoring and intrusion protection (Fail2ban, CSF, Snort or Suricata—only where appropriate) Deliverables you’ll get: - DNS flood fully mitigated - Baseline firewall rules on all hosts - Clear hardening report + change log (text or Git) - Zero avoidable downtime I work carefully on live systems, document every change, and prefer reversible, testable updates. Happy to continue with regular audits, backups, and future infrastructure improvements once the environment is stabilized. Ready to start immediately

@ahmadraza001912

As a seasoned full-stack software developer and app engineer, I have honed my skills to aptly handle your project's immediate and ongoing requirements. Having extensively worked with Linux systems, including Ubuntu, I am well acquainted with the intricacies of operating in diverse Linux environments that your project demands. My track record of delivering secure, scalable, and high-performance solutions perfectly aligns with your need for a robust security infrastructure. Crucially, my experience goes beyond just designing secure structures; I've gone through the trenches of handling urgent issues like the DNS amplification flood plaguing your VPS. My immediate priority would be to mitigate this threat by tracing the vector, shutting it down, and putting measures in place to prevent its reoccurrence - essentially ending that headache for good. In addition to this specific task, I assure you of comprehensive server hardening, regular audits, backup automation and continually enhancing your infrastructure. Backed by my proficiency in Python, Linux Ubuntu, Docker deployments and Nginx configurations alongside my DevOps workflow efficiency; I make certain that these are implemented with minimal disruptions or downtime. In me, you have a diligent partner who can adeptly handle these one-time tasks as well as provide long-term solutions that safeguard against future intrusions. Choose me for swift resolution and lasting security.

@nimaalizadehm

Hello, I’m a senior Linux systems and security engineer with strong experience securing production environments across Ubuntu, CentOS, and AlmaLinux. I regularly mitigate DNS amplification attacks, harden servers, and perform zero-downtime remediation on VPS and dedicated servers. Why I’m a good fit Immediate DNS mitigation • Identify the attack vector (open recursion, reflection, ANY queries) • Secure the resolver (BIND / Unbound / PowerDNS / systemd-resolved) • Apply rate limiting and recursion controls • Verify the VPS can no longer be abused Production-safe hardening • Kernel and package updates with careful reboot planning • SSH hardening (keys only, modern ciphers, brute-force protection) • Clean, documented firewall rules (iptables / nftables / firewalld) • Lightweight protection such as Fail2ban or CSF where appropriate Monitoring & prevention • Log-based attack detection • Alerts for abnormal traffic • Optional IDS (Snort or Suricata) only if performance-safe Deliverables ✔ DNS flood fully blocked ✔ Baseline firewall applied on all hosts ✔ Clear hardening report and change log (text or Git) ✔ Zero avoidable downtime I work cleanly, document every change, and approach systems like an operator—not just a fixer. If this goes well, I’m happy to continue with audits, backup automation, and future infrastructure improvements. Best regards, Nima

@bishalp21

I’ll secure your fleet of Linux servers, stopping DNS amplification attacks, configuring resolvers, applying firewall rules, and implementing robust monitoring. Ongoing, I’ll ensure regular updates, tighten SSH, and deploy tools like Fail2ban and CSF for continuous protection, all with zero downtime and comprehensive documentation

@shri026

Hi Sir, I am new in this and I am here to learn more. If you count on me, I will give you best result as per your expectations.