Sociability, responsibility, diligence
Administration of operating systems: Debian, Ubuntu, OpenBSD, RHEL, CentOS
Virtualization systems: ESXI, KVM + QEMU, Proxmox
Monitoring systems: Nagios, Cacti, Zabbix, Icinga
Installing and Configuring Host Control Panels:
ispconfig, ispmanager, plesk, cpnael
Basic knowledge and work with docker, docker-compose
Basic knowledge and work with salt stack
Networking: Configuring iptables rules, DMZ build, pf
Web servers: apache2, Nginx, Caddy
DNS: bind9, building local dns zone
VPN: openvpn, CA server
DBMS: MYSQL, MARIADB, postgres.
Mail server: exim4, postfix.
Filesystems and storages: LVM, ZFS, CephFS, NFS, ext2, ext4, RBD.
Building cloud storage based on nextcloud.
Setting up and administering the Oktell ip telephony server
Administration of access control systems based on BOLID
Made inventory of all hardware with Total Network Inventory