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andr3y53mion0v

Andrey Semionov

@andr3y53mion0v

Linux System Administrator

Lituanie
Lituanien, Russe
Certaines informations sont présentées en anglais.
À propos de moi
I set up, configure and secure Linux servers for businesses and developers. What I do: - Server setup and configuration from scratch - Firewall setup and network security (nftables) - SSH and kernel hardening via sysctl - Malware removal and incident response - NGINX, MySQL, AWS configuration - Fail2Ban and intrusion prevention I run my own infrastructure at sysadmin.courses built from scratch and tested under real attack conditions. If your server is vulnerable or compromised — I find the problem and fix it permanently, not just clean up the symptoms.... Plus d’infos

Compétences

a
andr3y53mion0v
Andrey Semionov
hors ligne • 

Voir mes services

Administration de serveur
I will set up and secure your linux server
De30 $US / projetPlus de détails
Administration de serveur
I will remove malware and clean your hacked wordpress site
De40 $US / projetPlus de détails

Portfolio

Expérience professionnelle

Self_Employed

Sysadmin Courses

Self Employed • Indépendant

Mar 2025 - Present • 1 yr 2 mos

Built and maintain a Linux & DevOps education platform from scratch. Manage server infrastructure, security hardening, firewall configuration and protection against real attacks.