m
mykolachabanov

M. Chabanov

@mykolachabanov

Linux Security Expert, Hardening, Firewall, Intrusion Prevention

Holanda
Inglês, Russo, Ucraniano
Algumas informações são exibidas no idioma inglês.
Sobre mim
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.... Saiba mais

Habilidades

m
mykolachabanov
M. Chabanov
offline • 
Tempo médio de resposta: 1 hora

Conheça meus serviços

Administração de servidores
I will secure and harden your linux server professionally
A partir deUS$ 60 /projetoMais detalhes

Experiência profissional

Freelancer.com

Linux Security Engineer

Freelancer.com • Autônomo

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.