I have been working in the I.T. field for approximately 20 years and "dabbling" with Linux since 1995.
I have worked at a blue-chip level and on some of the largest computer networks in the World, including crash recovery and network administration of SCO-UNIX, FreeBSD, HP-UX, just about every different kind of mainstream Linux Distro (Redhat, CentOS, Debian, Slackware, Fedora, Ubuntu, Mint, Puppy and many totally unheard of Linuxes).
I am available to assist with just about every facet of Linux administration including setup and installation, configuration issues, problems with networking and gateway design, firewall rule modifications, DNS, DHCP, FTP, Jabber, IMAP/POP, SMTP (sendmail, dovecot, Postfix), LDAP configuration and testing.
Additionally, if you require assistance with web programming, either ASP.NET or PHP, C#, VB.NET then I can assist with your requirements. I have spent the last few years as a developer.
I can also create and modify bash shell scripts where required.