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M. Chabanov
@mykolachabanov
Linux Security Expert, Hardening, Firewall, Intrusion Prevention
Pays-Bas
Anglais, Russe, Ukrainien
À propos de moi
Linux Security Engineer from the Netherlands. I harden production servers
against attacks, misconfigurations and compliance failures.
Expertise: Ubuntu / Debian / RHEL hardening, iptables & nftables firewalls,
SSH lockdown, fail2ban, CrowdSec, SELinux / AppArmor, Wazuh, OSSEC, Lynis,
CIS Benchmarks, PCI-DSS, Docker & Kubernetes security, WireGuard VPN,
incident response and log forensics.
Every job ends with a clear report, documented changes and a rollback plan.
Message me before ordering — I'll scope your project honestly.
Compétences
M. Chabanov
hors ligne •
Temps de réponse moyen de 1 heure
Voir mes services
Administration de serveur
I will secure and harden your linux server professionally
Expérience professionnelle
Linux Security Engineer
Freelancer.com • Indépendant
Feb 2022 - Apr 2026 • 4 yrs 2 mos
Hardening production Linux servers for SaaS, e-commerce, hosting and WordPress clients across the EU and US. Core responsibilities: - CIS Benchmark and STIG-based server hardening (Ubuntu, Debian, RHEL, Rocky, AlmaLinux) - Firewall design and deployment: iptables, nftables, UFW, firewalld - SSH lockdown, fail2ban and CrowdSec integration, brute-force mitigation - Intrusion detection with Wazuh, OSSEC, AIDE and auditd - Malware scanning and cleanup using rkhunter, chkrootkit, ClamAV and Lynis - Web server hardening for Nginx and Apache, including ModSecurity WAF rules - Docker and Kubernetes security reviews, rootless containers, SELinux and AppArmor profiles - Automation with Ansible and shell scripts for repeatable hardening - VPN deployment: WireGuard, OpenVPN, IPsec - Incident response, log forensics and post-breach recovery Every engagement ends with a detailed report, documented changes and a clean rollback plan.
