Hardware:

PC & Server assembling/maintenance/upgrades (X86 Intel and AMD Architecture).

BIOS & CMOS.

Microsoft and UNIX:

Windows NT5 & NT6 Desktop (Multi-Version).

Windows NT5/6 Server.

Active Directory (Multiple Domain Environments) ACLs, GPOs & Security Groups and Exchange.

DOS and Bash Shell and SSH.

E-mail Protocols: IMAP4, POP3, and MS Exchange.

Linux Ubuntu\Fedora\Gentoo\Debian and FreeBSD distributions.

Linux and Windows Virtual Machines (VMware and Virtual Box)

UNIX-LINUX Kernel Construction

Networks:

Network Bridges/Switches and Ethernet/ADSL Routers (with Cisco IOS)

TCP/IP & OSI, LAN & WLAN, OSPF/ EIGRP routing protocols, Ethernet and Wireless Standards and Encryption.

Network Virtualisation (Dyamips and Dynagen).

IP Addressing and Subnetting, DNS and VLSM.

Interconnecting SOHO LAN networks with network devices, printers and servers using home built lab.

Packet Building and Tracing and Cisco Security Device Manager.