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system administrator ubuntu nginx linux debian windows server opencart vps docker vpn debian ispmanager

Dmitry — GektorUA  
System administration · Computer networking
Ukraine Cherkassy, Ukraine
990
 21  0

Computer networking · System administration
Ukraine Vinnytsia, Ukraine
261
 16  0

Ivan — Tsym_Bal  
Software protection and security · Linux and Unix
Ukraine Kyiv, Ukraine
1233
 282  0

Web programming · System administration
Ukraine Kyiv, Ukraine
570
 110  4

Linux and Unix · System administration
Ukraine Ukraine
341
 43  0

System administration · Software and server configuration
Ukraine Odessa, Ukraine
148

Yevgeny — jekasumy  
System administration · Software and server configuration
Ukraine Sumy, Ukraine
Professional system administration. Linux/Unix.
2938
 435  0

My Skills and Experience I specialize in and work with various operating systems: Debian Ubuntu RHEL CentOS FreeBSD Windows I work with server hardware: IBM HP ProLiant Dell PowerEdge Supermicro I know how the following software should work: Web: Apache, Nginx, Lighttpd, OpenLiteSpeed Mail: Exim, Postfix, Dovecot FTP: ProFTPd, vsftpd, PureFTPd DNS: BIND, PowerDNS DHCP Gateway: NAT, traffic shaping Proxy: Squid Directory: LDAP AAA: FreeRADIUS VPN: IPsec-based, OpenVPN, PPTP, L2TP TFTP NTP Syslog TLS/SSL SNMP Virtualization: KVM, Xen, VMware ESX, OpenVZ, Proxmox Backup and Restore: RSYNC Revision Control Systems: CVS, SVN, Git File Sharing: NFS, SMB Software-Defined/Network-Based Storages: DRBD, Ceph, iSCSI, AoE Printing Systems: CUPS I am familiar with databases: PostgreSQL MySQL I have experience with monitoring systems: Zabbix Cacti Munin I also work with: Telephony: Asterisk (FreePBX, Elastix, MikoPBX) Routers: Mikrotik, All (Firmware OpenWRT, DD-WRT), hardware repair Billing systems for Internet Service Providers: Abills, Ubilling (building networks from scratch) Billing systems for hosting providers: BillManager, RootPanel, WHMCS Hosting panels: ISPManager, CPANEL, BrainyCP, VestaCP, ISPConfig, aaPanel, HestiaCP PON equipment (ONU, OLT): BDCOM Switches: Mikrotik, D-Link, TP-LINK, Cisco I have extensive experience in these areas. Feel free to reach out to me, I'll answer all your questions! Please note: I do not engage in website development.

Roman — rlavrinenko  
System administration · Software and server configuration
Ukraine Kyiv, Ukraine
1434
 127  0

System administration · Windows
Ukraine Zhitomir, Ukraine
345
 4  1

I have been involved in the administration of systems and networks since 2014. Thorough knowledge of the Windows family (AD DS, DNS, DHCP, FileServer, VPN, RDP, RDS, IIS) I know Linux well. Debian/Ubuntu (web servers, VPN, proxy, database...) Designing and deploying systems from "0" and working with existing solutions. Finding and solving problems in the work of existing projects
  • Installation of the Workstation — example of a freelancer's portfolio in the category System administration

System administration · DevOps
Ukraine Rovno, Ukraine
210

- 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, NAS, VPN; - VoIP servers; - AD, LDAP, AAD; - Extensive experience with DigitalOcean, Amazon AWS, GCP, Vultr, Azure, and other cloud service providers; - Ubiquity, Mikrotik, Cisco, Dell, HP, Fortigate, SonicWall network equipment; - Intrusion detection/prevention services (IPS, IDS, SNORT, Suricata) firewall (routing, VLAN, ACL, Proxy, NAT, DMZ), CARP, HA; - HP, Supermicro, DELL, Fujitsu Siemens, IBM, Lenovo, EMC, NetApp equipment; - Website administration (WordPress, Joomla, PHP, HTML, css etc.); - Virtualization (Proxmox, Virtualbox, VMware, HyperV); - etc