Harden DigitalOcean Ubuntu Server Security

@vili1977

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

@farooqtahir2013

I understand that your top priority is a clean, resilient digital environment to deploy your web application safely. Having more than a decade of hands-on experience as a Network, Cybersecurity, VoIP and System Engineer, I have developed an in-depth understanding of system vulnerabilities and the best practices to thwart them. Throughout my career, I have successfully designed and implemented secure Network infrastructures for both small-scale as well as enterprise-sized businesses, utilizing prominent vendors such as Cisco, VMware, IBM, Mikrotik, Ubiquiti, and many others. This ensures that I always recommend and deliver solutions based on industry best-practices. In addition to delivering the specific requirements you outlined in your project description - namely pinpointing the compromise path(s), hardening server configurations with an Ansible playbook for reproducibility and live monitoring/alerting using industry-standard tools like OSSEC/Snort/Wazuh_implemented on UF-with fail2dan tuning - I offer something unique: a holistic perspective thanks to diverse experience. To tackle such grave security concerns as yours it takes that rare combination of skill and dedication that I have honed fair & square over the years. By hiring me you choose not only someone who can find every single hole in your defense but also someone who, like you, is committed to closing them for good. I look forward to working with you and making your server as secure as a fortress.

@touhidecevw

As a seasoned network and system administrator with extensive experience in network and cloud security, I am accustomed to performing comprehensive investigations to identify all potential vulnerabilities. Due to my expertise, I've acquired various esteemed certifications including CCNP, CCNA, RHCE, and Certified Ethical Hacker (CEH). Over the past 11 years, I've consistently delivered hardened server configurations while emphasizing the importance of monitoring using tools such as OSSEC, Snort, and Wazuh which can tighten security and quickly detect any anomalies for timely corrective action. Drawing from my profound understanding of Ubuntu systems in a cloud-VM context coupled with my in-depth knowledge of digital threat landscapes, In line with your requirements, I have previously resolved issues involving mining-malware on Ubuntu servers successfully. This demonstrates my capability to deliver a clean, resilient environment where you can confidently deploy your application again. Over the years, my dedication to ongoing learning has consistently kept me informed about emerging threats and sharpened my skills at counteracting them. By entrusting this project to me, you're not just choosing a freelance platform- you're selecting a reliable expert who cares deeply about providing robust solutions that stand the test of time. Choose me for this crucial project and let's strengthen your DigitalOcean Ubuntu server security together.

@zditanuel

ubuntu security specialist. i trace miner vectors (likely ssh brute/web vuln→chattr ssh wipe), deploy auditd/wazuh, ansible hardening playbook w/ nftables/apparmor, full report/rollback. proven recoveries.

@PKSocket

Greetings, To introduce, I am a DevOps Engineer and an expert in Ubuntu & DigitalOcean. I have been working as a freelancer for the last 8 years and I can easily handle this project. I have over 5 years of experience in AWS, Linux, Ubuntu, CentOS, RedHat, Windows Server, Apache, Nginx, Jenkins, Docker, Azure, Google Cloud, MYSQL, and MongoDB. Can we have a quick chat to discuss more about this project? Looking forward to hearing from you. Regards, Naveed

@softwarelinkerrs

With over a decade of experience in computer security and Linux, SoftwareLinkers is well-placed to provide the secure, scalable digital solutions you need. We've worked with clients from various industries including education, eLearning, insurance, finance and logistics – all relying on us for secure systems. Our security expertise stretches from writing bulletproof code to understanding business goals, designing reliable systems and building solutions that are not just secure but also scalable and future-ready. And we don't stop at deployment - our monitoring and support services will ensure that your system remains secure even after project completion. In my career, I have dealt with similar situations where crypto-miners keep finding their way into servers despite seemingly tight security measures. My proficiency in Ubuntu server hardening means that I can dig deep and identify the vulnerability points. Once pinpointed, I’ll address these weaknesses using best practice methods like intrusion-detection tooling, automated patching and more -- all committed to an Ansible playbook so you can easily reproduce the hardened configuration. Additionally, as a Verified Full Stack & Infrastructure expert my skills extend beyond simple hardening to live monitoring which will include fail2ban tuning and the implementation of OSSEC/Snort/Wazuh - tailored for your specific needs. Let's build a clean, resilient environment together!

@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.

@souravsasmal14

Hi, I’ve handled multiple Ubuntu/DigitalOcean compromises where crypto-miners re-entered even after UFW and Fail2ban were configured — usually the real issue was an overlooked service exposure, vulnerable web app, misconfigured sudo/root escalation, or a persistence mechanism (cron, systemd, SSH backdoor, LD_PRELOAD, etc.) that wasn’t removed. I’ll start with a full forensic sweep (process tree, hidden users, cron jobs, systemd units, bash history remnants, package integrity checks, auditd, rkhunter/chkrootkit, and web stack review) to identify the original entry vector and persistence method — especially since authorized_keys and logs are being wiped. Then I’ll rebuild trust at the kernel and service level: hardened SSH, stricter PAM/sudo policies, immutable key files, AppArmor/SELinux tuning, rate limiting, proper isolation of services, automatic security updates, and IDS/IPS (Wazuh or OSSEC depending on your preference). You’ll receive a clear root-cause report with evidence, a fully hardened configuration captured in an Ansible playbook for reproducibility, live monitoring/alerting configured, and complete documentation with rollback steps. My goal isn’t just cleanup — it’s eliminating persistence paths so the server stays clean long-term. Ready to start with root access and snapshot backup in place.

@mariamz24

Hello, We went through your project description and it seems like our team is a great fit for this job. We are an expert team which have many years of experience on System Admin, Linux, Computer Security, Ubuntu, Security, Cloud Security, Ansible, System Administration Please come over chat and discuss your requirement in a detailed way. Regards

@Chrism276

EXPERT ((Ubuntu, Computer Security, Linux, Cloud Security, System Administration, Ansible, Security and System Admin)) DEAR EMPLOYER, I’ve completed the exact same projects before successfully. Awarding me will be the fastest way to complete your task with the best rates possible. I CAN ASSURE YOU 100% THAT WE ARE FULLY CAPABLE OF EXECUTING ANY LEVEL OF TASK/PROJECT BASED ON THE SKILL REQUIRED. I am fully confident about our skills and my understanding of the project description and we are ready to go through any test or sample task you assign to acquire your trust. Let me know when are you available for an initial 15-30-minute discussion (FREE OF CHARGE) so we can discuss the requirement in detail and I can walk you through the mentioned systems to acquire your trust in my skill. REST ASSURED YOUR WORK IS IN VERY SAFE AND PROFESSIONAL HANDS. THANK YOU

@kiralch

I have experience with DigitalOcean security and Ubuntu hardening. The wiping of logs and authorized_keys suggests a persistent intrusion. This pattern is common in recent XMRig or Kinsing malware attacks. These miners often exploit application-level flaws to gain initial access. I can respond to your repair request immediately. I will perform a deep trace using Auditd to find the original compromise path. I will implement kernel-level auditing and service isolation to block these vectors for good. This goes beyond basic UFW or Fail2ban rules. I will provide an Ansible playbook for the hardened configuration. This includes firewall, SSH, and web stack hardening for reproduction. I will also set up Wazuh for live monitoring and file integrity alerts. This ensures your keys and logs remain protected against any future tampering. I am ready to start this task right now to restore your clean environment.