With a decade of expertise, I excel in system administration, specializing in Linux, Windows and VMware configurations. I can also assist with hardening Linux and Windows Servers according to the standards of NIST or best practices from Center for Internet Security (CIS Benchmarks), improving system security, fulfilling audit or compliance requirements. ***Linux Administration Key Skills*** • Linux Server Administration (Debian, RedHat, Oracle Linux, Unix) • Linux servers Hardening (Firewalld, Iptables, SSL) • Web Server Management (Apache, Nginx) • Linux Bash Scripting ***Cyber Security Key Skills*** • Linux and Windows System Hardening (Firewalld and Iptables) • Implementation of NIST and CIS Standards • SSL Configurations ***Middleware Key Skills*** • Oracle Weblogic server • Oracle Http server • IBM Websphere server • IBM Websphere Http server ***VMware ESXI, vCenter, Horizon and UAG Key Skills*** • Installation and configuration of ESXI hosts. • Deploy and configure VMware vCenter Server Appliance • Create a backup schedule for the vCenter Server Appliance instance. • Configure virtual storage using iSCSI and NFS storage. • Manage virtual machines, templates, clones, and snapshots. • ESXI AD Authentication • Installation and Configuration vSphere Standard and Distribution Switch with Multiple VLAN. • Configure the ESXI/vSphere Local Datastore & Storage Datastore of FC or ISCSI from SAN Storage Zoning. • Installation and Configuration of VMware Horizon and UAG (Work From Home Solution) ***Windows Server and Active Directory Services Key Skills*** • Active Directory Installation, Configuration and troubleshooting • Windows Server Administration and Configuration of Windows Server 2012,2016,2019 & 2022 • Failover Cluster Manager • DNS installation and Configuration • DHCP, File Server installation and Configuration • Server, User and OU Management • Group Policy Designing • Trust Relationship Management • DFS Replication • DFS Failover Clustering • SFB (Skype for Business) • Security Hardening • Patching • PowerShell Scripting • Configure Print Server • SSL Cert • RDP • IIS ***Exchange Server Key Skills*** • Exchange Server installation, configuration, and maintenance of Microsoft Exchange servers 2013/2016/2019 • Autodiscover, ActiveSync, SU /CU Updates • Exchange Server Migration, Mailboxes migration, IIS, SSL or any other exchange server issue • Troubleshooting and resolving any email-related issues • Performance optimization and capacity planning • Resolving Exchange Server Mail flow (Incoming and Outgoing emails) • Configuring Database Availability Group (DAG) • MX(A) Record setup • Mailbox/Database Migration • Managing and maintaining Mailbox databases, data recovery and restoring data from backup • Exchange Power Shell / Windows Power-Shell • Exchange Disaster Recovery • Mail Delivery Issue • Outlook configuration issue • Create and manage mailboxes, distribution lists • Outlook Connectivity Issue