I have more 10 yers experience it-administrator MS Windows Server 2000/2003/2008/2012 FreeBSD, Slackware, CentOS, Debian MS Windows 98/ME/NT/2000/XP/Vista / 7/8/MacOS Windows mobile / IOS / Android Active Directory, GPO, Citrix Presentation server, XenServer, Vmware ESX, Hyper-V server TCP / IP, WAN / LAN, VLAN, WiFi, WI-MAX, DNS, DHCP, development, installation, uservicing the corporate network Firewall and Proxy-Server: ISA, Kerio WinRoute Firewall, UserGate, Squid, ipfw, Iptables IIS, Apache, ngnix Creating sites for CMS: Joomla, wordpress HTML, MySQL Backup: Acronis True Image Home / Server / Enterprise Maintenance of office equipment