k
krishna_linux

Krishna Singh

@krishna_linux

Linux System Administrator Ubuntu, RHEL, Server Security

India
English, Hindi
About me
Hi, I'm Krishna - a Linux System Administrator with 4+ years of hands-on experience in Ubuntu & RHEL server environments. I help businesses and individuals deploy secure, fast, and production-ready Linux servers. My expertise includes server setup, Apache/Nginx configuration, SSH hardening, firewall setup, SSL installation, WordPress deployment, and troubleshooting boot or performance issues. I focus on security best practices, clean configuration, and reliable long-term solutions. If you need a reliable Linux administrator to secure, fix, or optimize your server, I am here to help you.... Read more

Skills

k
krishna_linux
Krishna Singh
Offline • 
Average response time: 1 hour

See my services

Server Administration
I will setup and secure ubuntu, rhel linux server, vps, SSL, firewall, nginx, apache
From$15 / projectMore details
Technical Support
I will fix ssh login issue on ubuntu, rhel linux server
From$15 / projectMore details

Portfolio

Work experience

Linux System Administrator

Self Projects • Freelance

Oct 2024 - Present • 1 yr 7 mos

Configured and managed Ubuntu & RHEL servers. Deployed WordPress using LEMP and LAMP stack. Implemented SSH hardening and key-based authentication. Configured firewall (UFW/firewalld) and Fail2Ban security. Installed and configured SSL certificates (self-signed & production). Automated backup using cronjobs. Managed users, groups and ACL permissions