8 years of experience in work with Linux/Unix systems, services and networks configuration, maintenance. I know very good such a OSes like: Debian, Ubuntu, Centos, Red Hat, Fedora and FreeBSD.
From server services in mostly I know: www servers (Apache,Nginx), mail servers (Postfix, Exim, Zimbra), files (Samba), DNS (Bind, Mydns), proxy (Squid), ftp ftps (Proftpd, Vsftpd), databases (MySQL, PostgreSQL Firebird), version control (SVN, GIT)
I know firewalls: iptables, pf, ipfw, shorewall, CSF ; VPN (IPSec, OpenVPN, PPTP); backup solutions (Bacula, BackupPC, Rsync, Rsnapshot)
Also I know many different monitoring tools such as: Cacti, Nagios, Mrtg, Webalizer, Awstats.
I have lot of netowks knowledge. I know and I can configure many different enterprise switches, routers. modems, firewalls of such as producers like Cisco, Dlink, TPlink, Allied Telesis, HP and others. I can configure different networks routings (static or dynamic), create VPNs or secure these networks.
..and other
I invite to work with me and kind regards.