Working as a inhouse System Administrator for programming company which builds Web and Mobile applications. I have built company infrastructure from the ground up. Also I was outsourced as Windows System Administrator for one project in German company which core business is doing system integration.
Linux
- Apache
- Installing and configuring Apache
- Installing and configuring LAMP
- Installation and configuration various distros ( Ubuntu, Centos and Debian)
- Working on weekly updates for various Linux operating systems
- Setting permissions
Virtualization
- Proxmox
- Deployed standalone server
- Creating virtual machines per request
- Backup of virtual machines
- Citrix
- Resolving problems with application virtualization like user does not see application or does not have access
Networking
- Mikrotik
- Design, implementation and configuration networks
- Configuring DHCP
- Configuring Capsman
- Configuring Wifi with VirtualSSIDs
- Configuring Firewall
- Configuring VPNs ( remote access VPN and Site to Site VPN)
- Configuring Routing using static routes
- Configuring VLANs on Wifi and Wireless
- Configuring Failover WAN
- Configuring policy based routing using Mangle
- Configuring EAP TLS authentication for WIFI
- Level 7 filtering
- Monitoring logs for errors and making sure that everything works properly
- Design, implementation and configuration networks
- Cisco
- Design, implementation and configuration network with Cisco
- Configured RSTP, Port fast and trunks
- VLANS
- 802.11x authentication
- Design, implementation and configuration network with Cisco
- TPLINK
- Configuration
- Broadcast storms, prevent loops and VLANS
- Configuration
- Freeradius
- Installation and configuration
- 802.1x wired authentication
- Configuration EAP TTLS, EAP TLS for Wireless Enterprise authentication
- Openssl
- Implementation and configuration of PKI, generating certificates CRL and etc.
- Installation and configuration
Microsoft
- Active Directory
- Creating users and adding them to proper groups
- DNS
- Creating records
Backup
- QNAP
- Using QNAP NAS and QNAP agent to backup workstations
Cloud
- Azure
- Media services – read more on projects
Scripting
- Bash
- Automating Web site deployment, scripts check after user puts input on specific version of web site, verifies if it is newer also verifies if it is not already installed. If requirements are met than it downloads, extracts files, adjust permission and restarts Apache.
Monitoring
- Zabbix
- Installation and configuration to monitor Apache, servers health ( disk, memory and CPU utilization)
- Munin
- Installation and configuration to monitor Apache, servers health ( disk, memory and CPU utilization)
- Prometheus and Graphana
- Installation and configuration various exporters, importing to Grafana and using already built Dashboards
Security
- Penetration testing
- Using ZAP, Redhawk, Nikto scanner and NMAP to quick scan web sites for known vulnerabilities