Remote Linux system administration, configuration and troubleshooting services. 20+ years experience doing Linux administration, primarily on Red Hat/CentOS/Fedora servers, but considerable experience with other Linux distributions as well. Experience setting up a variety of common network services on Linux servers such as Samba, BIND (DNS), ISC DHCPd, Sendmail, Dovecot (IMAP), PostgreSQL, MySQL, Apache, mod_perl, mod_ssl, nginx. Good working knowledge of SELinux and network security including firewalls and server hardening.