System Administrator Mikrotik ubuntu VPN Zabbix Linux\UNIX vmware bash ansible Proxmox
Oleksandr Molnar

Oleksandr Molnar

Ukraine

DevOps · System & Network Administration

0 0
184
Go to profile
DevOps / Infrastructure Engineer with practical experience in Linux administration, Docker, Docker Compose, CI/CD, GitLab, GitHub, cloud infrastructure, reverse proxy, DNS, SSL/TLS, monitoring, networking, and deployment automation. My strongest background is in Linux-based infrastructure, containerized services, self-hosted environments, CI/CD automation, network troubleshooting, and service reliability. I have built and maintained deployment workflows: GitLab CI/CD → Docker image build → push to private container registry → deploy via SSH to Linux VM → service restart/update. Practical cloud…
Oleksandr Meleshchuk

Oleksandr Meleshchuk

Ukraine

System & Network Administration · DevOps

0 0
184
Go to profile
- Development, design, maintenance of the computer networks, computer equipment, network services, improvement and analysis of existing network, server, and service infrastructure; - Users’ technical and software support; - Setting up and maintaining Microsoft based operation systems WinXX, Windows Server 20XX; - Setting up and maintaining Linux based operation systems Debian, Ubuntu, CentOS, and Unix-like FreeBSD; - Administration of the: MTA(Dovecot, Postfix, Exim4, MS Exchange Server), FTP, SQL(MS SQL, MySQL, PostgreSQL, MongoDB), LAMP(Apache, Nginx, PHP), HAProxy, DNS, DHCP, NPS, DFS,…
Vladyslav

Vladyslav

Ukraine

System & Network Administration · Software & Server Configuration

0 0
222
Go to profile
I specialize in Linux system administration and security with a focus on stability, access control, and minimizing the attack surface. I work primarily with Ubuntu Server and FreeBSD, providing full server setup, configuration optimization, and basic security hardening. Core areas of expertise: • VPS deployment and configuration • Firewall setup (UFW, iptables, pf) • NAT and traffic filtering rules • VPN deployment (WireGuard, OpenVPN) • SSH hardening (key-based authentication, access restrictions) • Basic Linux security audits • Service isolation (FreeBSD jail) • Open port and service…
Setting up a secure Ubuntu Server (SSH, UFW, IP restrictions)
45 USD
109
Setting up a secure Ubuntu Server (SSH, UFW, IP restrictions)
System & Network Administration
Basic security hardening of Ubuntu Server has been performed in a test environment. Implemented: • Full system update • Creation of a separate administrative user • Configuration of SSH access exclusively by keys • Disabling password authentication…
Roman Zhelnov

Roman Zhelnov

Ukraine

System & Network Administration · Text Editing & Proofreading

0 0
218
Go to profile
I am a Junior Frontend Developer with basic programming skills. I am responsible, adaptable and motivated to develop in the field of web programming. I am looking for a team where I can apply my knowledge and skills to solve problems.
Tomasz Wołkowycki

Tomasz Wołkowycki

Poland

System & Network Administration · Online Stores & E-commerce

0 0
100
Go to profile
Hi, I’m Thomas, a beginner freelancer specializing in building dynamic and responsive websites using HTML, PHP, and MySQL databases. My passion is delivering solutions that not only look great but also work efficiently and are optimized for performance. *What I offer:* 1. *Website Development in HTML and PHP* - I create customized websites tailored to clients' needs, ensuring a visually appealing and functional design. - My websites are responsive, meaning they work seamlessly on mobile devices, tablets, and desktop computers. 2. *Database Management with MySQL* - I have experience in…