Operating systems: Windows Server 2000/2003(R2)/2008/2012; FreeBSD;Linux;Windows XP/Vista/7/8
Databases: MySQL; MSSQL (2000,2005,2008,2012); PostgreSQL ; Oracle
Networking: CCNA certified, Routing (RIPv2,BGP,OSPF,EIGRP,BGP), TCP/IP; SWITCHING (Vlans, VTP, STP ), VPN - IPSec,PPTP, OpenVPN; MS Active Directory; SIP
Internet Services: DHCP; DNS (Windows DNS,Bind,DJB DNS); Apache; Tomcat; IIS; MX - Postfix, Qmail, Amavis, SpamAssassin; MailScanner; Squid; Dansguardian;
Programming: PHP; SQL; Bash