Remote server administration
Onsite Linux administrators on contract
DKIM & SPF
Network management (LAN/WAN)
Disaster recovery
Security auditing & hardening
Software installation & configuration
File & directory services, NFS
Kernel rebuilds & module management
Backup planning & implementation
Perl-Shell-CGI-system scripting
Performance tuning
Internet Support & Management
Apache web server, SSL, PHP, CGI
Sql, MySql, Oracle install & managment
Sendmail, Qmail, VpopMail, POP, IMAP
DNS-BIND (Bind8, Bind9, Balancing)
FTP, Virtual FTP servers (Proftp, WU)
Load Balancing/Clustering
OpenSSL-OpenSSH-Stunnel
Anti-Spam, Anti-Relay SPEWS-ORBS
IPtables-IPchains configure and tuning
SAMBA deployment & configuration
DHCP & TCP/IP Management