cisco, linux, windows (AD), juniper, email marketing, webpanels (plesk, cpanel, etc), linux and windows services. my specialisation in network and system administration: linux (centos, debian, ubuntu, etc), vps and vds (xen, openvz, etc), web panels (virtualmin, cpanel, parallels plesk, zpanel, kloxo, etc), linux services (apache, mysql, postfix, dovecot, samba, etc), windows and it services (win 2003(8), AD, ISA, MSSQL, winxp, win7, etc) cisco devices (switches, routers, firewalls)/ juniper devices (routers and swithes), asterisk and freepbx, and other tech support for this categories.