Lorenzo Castro Email & Phone Number

Plantation, Florida, Us

Plantation, Florida, Us

Fort Lauderdale, Florida, Us

• Managed firewall, IPS/IDS and employee remote access VPN. Investigated alerts for potential malicious activity. Conducted vulnerability scans and assessments, host and network based data forensic investigations.• Designed and implemented PCI network environment. Responsible for maintaining ongoing PCI compliance. Developed and maintained security controls baselines. Implemented Security Policy, Risk Assessment Process and Incident Response Plan for the company.• Re-configured company SFTP solution to improve user access control and security.• Responsible for evaluating and implementing security solutions to improve network visibility, user accounts control, log management and analysis platform.• Deployed and maintained Wazuh SIEM platform for central log storage, analysis, and file integrity monitoring.• Drove creation of company-wide security awareness and PCI training program.

Fort Lauderdale, Florida, Us

• Responsible for completing Network Projects related with Linux and Windows servers, websites, email, storage, firewalls, virtualization, routers, switches and infrastructure. Responsible for network maintenances, system security as well as troubleshooting emergencies.• Configure, deploy and manage Citrix Xenserver hypervisor clusters using features such as workload balancing (WLB), HA clustering for fault tolerant and cost effective virtualization solutions• Build, configure and manage open source based pfSense firewalls with VPN services in high availability clusters using common address redundancy protocol (CARP) and state synchronization (pfsync) to provide fault tolerant firewall solutions.• Deploy and maintain a high available Graylog2 log management and analysis tool.• Implement configurations and maintain AWS infrastructure (ELB, EC2, Route 53, S3 bucket, EFS, Auto Scaling)• Maintain Office 365 for the company.• Design, re-design and implement Network infrastructure for clients (Firewalls, Switches, Hypervisors, Domain Controllers, Application servers, Wireless).• Setup and manage ADFS System.• Configure, deploy and manage Zimbra Mail System.

Fort Lauderdale, Florida, Us

• Responsible for completing Network Projects related with Linux and Windows servers, websites, email, storage, firewalls, virtualization, routers, switches and infrastructure. Responsible for network maintenances as well as troubleshooting emergencies.• Maintained network and system security.• Built and maintain MariaDB Galera Cluster servers.• Designed an architectural model of a redundant web server infrastructure and accomplished a full migration of websites, from AWS. Responsible for maintaining and troubleshooting the web servers of the company.• Designed and implemented a high availability virtualization environment in PROXMOX.• Installed, configured and maintain redundant DFS file server system in Windows Server 2016.• Designed and implemented a Point-to point connection between remote sites using GRE tunneling protocol and OSPF.

Fort Lauderdale, Florida, Us

• Monitor the network via Solarwinds, PRTG and other monitoring tools.• Create, update, solve and route Network tickets as needed using WHD Solarwinds.• Followed processes to meet and exceed Customers SLAs.• Work with Network team to troubleshoot issues related with Linux / Windows servers, virtualization and Cisco routers & switches.

Fort Lauderdale, Florida, Us

• Troubleshoot computer support problems and apply understanding of computer software and hardware products and services to resolve problems of users.• Receive telephone calls and e-mails from users having problems using computer software and hardware or inquiring how to use specific software, electronic mail, or operating systems.• Determine from computer user the nature of problem, determine whether problem is caused by hardware such as printer, cables, or telephone, formulates diagnosis, and assist users through problem solving steps.

Miami, Fl, Us

• Responsible for installing, maintaining, troubleshooting and upgrading computer hardware, software, personal computer networks and customer electronic mail systems.• Troubleshoots problems with network and peripheral equipment; makes repairs and corrections where required.• Instructs users on new or upgraded computer applications and hardware.

Boca Raton, Florida, Us

• Resolved hardware and software technical problems in the system elements after detailed analysis, including computer failures and software malfunctioning.• Gave to the customer the best buying experience, being friendly, knowledgeable and helpful.• Store items in an orderly and accessible manner in stockroom and sales floor.• Mark stock items using identification tags and labels.