• Extensive knowledge of Microsoft Active Directory, Group Policy, DHCP, DNS, etc.• Advanced knowledge of Microsoft Exchange Server 2003/2007/2010/2016/O365. E.g. Solutions built in its entirety for 1000 plus users.• Ethical Hacking, Password Breaking.• Advanced Mail Security• PKI Certificate Handling/Implementation e.g. Macro Signing/Code Signing etc.• Engineering and implementation of SAN solutions SAS, iSCSI and Fibre Channel.• Spec and quote Servers HP, Dell etc.• Engineering and configuring of File/Print, Backups (Symantec and Veeam).• Moderate Linux skills, Apache, Nginx (GeoBlocking, Fail2Ban, Certificates, Reverse Proxy), Confluence by Atlassian Deployed and supported in full. Debugging and support of RHEL and Ubuntu etc.• Deduplication technology deployment and scoping• Comprehensive knowledge of Microsoft Server Operating Systems 2003-2019• Advanced knowledge of VMWare ESX4-ESXi7• Advanced knowledge of VMware View 5-7 Composer and ThinApps. • Implementation of MS RDS 2019, RDP Gateway in DMZ, Remote Apps etc. • Understanding of network concepts, with the ability to apply administration to Cisco Network Devices. Moderate skilled to Layer 2 CCNA in progress• Administration of Cisco Call Manager and Debugging skills with Wireshark.• Comprehensive knowledge of Microsoft Client Operating Systems Dos-Windows 10.• Citrix Troubleshooting Skills.• Extensive P.C. Hardware knowledge through building P.C.s since Yr 2000.