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Network Security Windows Server

Omaha, NE
September 28, 2023

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Dirk Damaso A. Casomo III, NSE*, ACE, ATP-HPE, SCA-XG, AWS-Accredited


*** * **** ***** #*-107, Omaha, NE 68114



Mobile #: 402-***-****

WhatsApp #: +65 83749186


Nationality: Filipino

Professional Status: Degree Holder BSECE Certified IT Engineer

Civil Status: Married

Summary: 10 years plus of IT Engineering with IS support and operations, project delivery, pre and post sales skillset

Experiences in IT: Industry and Tech-Voc/Academe

Others: IT Consultant, IT-Trainer


University of the Immaculate Conception, 2007 – 2010

- Graduate School UIC Campus

• Master of Information Technology

- 27units, earned

University of the Immaculate Conception, 1999 – 2004

- Bonifacio St., Davao City, Philippines

• Bachelor of Science in Electronics and Communications Engineering

-Telecommunications specialization, 5-year Degree



• Vmware ESXi; NSX

• Vmware on AWS SDDC -Software-Defined Data Center

• Ubuntu, Linux RPM Distro scripting command /CentOS, Kali, Backtrack Pentesting

• Wireshark, InSSIDer, ZenMAP, Heatmap

• Opensource Firewall

• Network Forensic

• Windows Server – AD LDAP, Domain Controller

• Nessus Vulnerability Assessment Scanner

• AWS – SecurityGroup Cloud Management


• MS SQL Databse query

• AWS, Aviatrix; < Azure

• OpenVPN Enterprise

• 2FA G-Authentication

Network and Security

• Sophos

• Palo Alto Networks

• FortiGate/FortiMail

• CheckPoint

• Barracuda

• SonicWall

• Watchguard

• Juniper NetScreen/SRX

• Cisco ASA, routers and switches

• HPE Provision/curve/Aruba

• Ruckus ICX switches

• DrayTek Broadband WAN

• Digi Anywhere LAN USB

• Lenovo switch

• D-Link manageable switches


• Radware

• Peplink

• NetScaler Citrix

• Mushroom Networks

• McAfee NGFW/Forcepoint

Monitoring, Visibility, Log Correlation, Threat Intelligence


• Solarwinds

• Splunk

• Exinda

• SevOne


• Group-IB



Eneterprise Wireless

• Ubiquiti Networks

• Synology Routers

• HPE OfficeConnect AP

• Ruckus Wireless

• Meraki

• TrendNet AP

• Sophos Central Wireless

Certifications Vendor Dependent

• Palo Alto Networks

- Accredited Configuration Engineer – PANOS 6;7;8

- Accredited Engineer PSE – Foundation

- Accredited Engineer PSE – Cloud Associate

- Accredited Engineer PSE – Data Center

- Accredited Engineer PSE – Strata Associate


- AWS Technical Professional

- AWS Cloud Economics Accredited

- AWS Foundations – Securing Cloud

• Aviatrix

- Aviatrix Certified Engineer- Multi-Cloud Network Security Associate

• Fortinet

- NSE 6 Specialist

- FortiMail Specialist

- Fortinet Wireless Specialist

- FortiSandbox 2.0.3 Specialist

- NSE 3 Associate

- NSE 2 Associate

- NSE 1 Associate

• CATO Networks

- Secure Access Service Edge Expert Level 1

- Secure Access Service Edge Expert Level 2


- GIgaTECH Certified

- GigaPro Associate

• Solarwinds

- Solarwinds Certified Professional


- Paesler Certified Monitoring Professional

• Sophos

- Sophos XG Firewall Certified Architect

- Sophos UTM Certified Engineer

- Central Wireless 2.0 Certified

- Cloud Optix Support Certified

- Certified Phish Threat Suport

- Central Email Support Certified

- Sophos Cloud Certified Engineer

• Barracuda

- Barracuda CloudGen Firewall –


- Next Generation Firewall

Certified Engineer

-Spam Firewall Certified

• Ruckus

- Wirless Solutions Engineer Certified Lv1

- Ruckus ICX Implementer Certified

• Peplink

- Peplink Certified Engineer

- Peplink Sales Specialist


- Accredited Technical Professional – FlexNetwork

• Exinda

- Exinda Certified Network Analyst

• Kaspersky

- Kaspersky Lab Certified Professional

• AdTran

- Adtran Technical Solutions Associate – Internetworking

- Adtran Technical Solutions Associate – Virtual WLAN


- Certified Network Professional in Security

- Certified Network Professional in Wireless

• Cisco

- SMB Specialiazation for Engineer


- Vulnerability Management Detection and Response Certified Specialist

• EXTREME Networks

- Extreme Networks Associate – Intro to Future Networking


- KEMP Certified Technical Professional

Certifications Vendor Neutral

• McAfee Institute

- Certified Cyber Threat Forensic Investigator

- Certified Cyber Intelligence Professional

• Teracom Training Institute

- Certified IP Telecom Network


- Certified Wireless Analyst

• Mile2

- Certified Security Awareness Level1

• CloudU Rackspace

- CloudU Certified: Cloud Computing Foundation

• ICDL – Asia

- IT Security Certification

• Cybrary

- Certified in IPS/IDS

- Certified in Advanced Penetration Testing

Professional Experiences

Pacific Tech Pte Ltd (February 2022 (onsite)– Present[remote])

151 Lorong Chuan, #03-08, Singapore 556741 New Tech Park Singapore 556741

Technical Consultant Presales (Cybersecurity Products) – FULLTIME

- Sophos, SonicWALL, DEVO and Group-IB, in collaboration with Fortinet products

- Provide technical consultation to customers through understanding customers’

requirements and recommending the most suitable well-engineered solutions

- Develop and execute strong demo/tech presentation to influence customers

- Working with sales team, channel and PMs on technical proposals, BOM, SOW and

cybersecurity technical presentation and demonstrate a thorough understanding of

SDWAN, SDRED, ZTNA technology and MDR SOC-as-a-service

- Hands-on engagement for Proof of Concept (POC) and evaluation for customers

- Engage vendors for SLA-bind support and solutions collaboration

- Provide security health checks from EDR/XDR to firewall and generate report

correlative to MITRE ATT&CK framework for presentation and roundtable discussions

- Coordinate, drive and issue escalations with multiple network-security vendors

related to incident management

Professional Services Engineer (Cybersecurity Project Delivery) – FULLTIME

PROJECTS (Fortinet, Sophos, SonicWALL, KEMP, Forcepoint, Extreme Networks, etc.):

- Network security design implementation and intense diagnosing and resolving complex

multivendor-network switching and routing issues

- Provide customer with knowledge transfers on product operation and administration

- TLS/SSL decryption and DPI inspection implementation

- Enterprise Endpoint and Server Protection MS/Linux XDR configuration

- WAF configuration for IP address assigned to a network interface, port, or domain

- Network appliance firmware upgradation

- IPSec/SSL Site to site and remote access VPN setup

- Network troubleshooting and support to customer

- Email Protection system on-premise and API based implementation

- Firewall integration via SNMPv3 traps with a log collector and

- Implementation of high availability firewall mode configurations

- Weekly security appliance report generation for security posture evaluation

SOPHOS Computer Security Pte Ltd (March 2021 – January 2022)

Units 1-4 17th Floor Zuellig Building Makati, 1225 Metro Manila PHILIPPINES

Support Engineer Network Security (Cybersecurity Products) – FULLTIME

- Provide Sophos APAC customers with technical support troubleshooting within the

defined parameters of Sophos Support Services including customers with a defined

SLAs associated with severity levels, and focus on quality plus customer

satisfaction, covering our both on-premise and cloud network security products.

- Provide advanced troubleshooting via remote sessions using TCP Dump, packet

capture, wireshark to modify customer’s environment towards a resolution that include,

but are not limited to: Installation issues, best practice configuration, network

troubleshooting, Windows, Mac OS and Debian/Suse Linux command execution

- Handle technical escalations within team response/resolution targets with SAP


- Troubleshooting complex networks with SDWAN policy involved and setting up QoS

and traffic shaping policy

- Assisting customer in troubleshooting issues from either fresh or existing configuration

of Firewall to Server integration via LDAP/RADIUS or Active Directory, or even 2

Factor Authentication (2FA) via OTP service

- Troubleshooting Routing static and BGP; VPN issues: IPSec, SSL, PPTP, RED

Tunneling, site to site, remote access, either Sophos or with third party products like

VMware SDDC, and other popular firewalls

- Network products backend log analysis, Email Security Gateway and Phish Threat

log analysis via

- Troubleshooting an enterprise/managed wireless networks either an on-prem

UTM/firewall controller or via Sophos Central Cloud platform

*Reason for leaving the job: to be in Singapore with my wife

AsiaPac Distribution Pte Ltd (June 2017 – Oct 2020)

Blk 219 Henderson Road #05-01/02/03/04 Henderson Industrial Park, 159556 SINGAPORE

Network Engineer Security (Cybersecurity Network Integration) – FULLTIME

- Engage, coordinate and issue escalations with multiple network-security vendors

related to incident management

- CISCO/HP/Aruba firmware upgradation project for both switches and routers

- Conducted pre-sales, project meetings, scope of work discussion, product

knowledge and project documentation and walkthrough

- Servers, and network security appliance-datacenter rackmounting (4U Lenovo, DELL, HP

servers, ADC Radware, SevOne Appliance)

- Network security design and implementation and configured WLAN with security using

managed WIFI (Fortinet, Cisco, Ruckus, Aruba/HPE)

- CISCO/HPE/Aruba Switch VLAN, LACP/EtherChannel & Trunking configuration

- Implemented Checkpoint firewall GAIA R77.30/R80 with policies and rules

- Desktop support as MSP for HITACHI cloud - storage agent installation

- Hybrid Infra integration, CISCO on-prem – AWS FortiGate – SDDC-VMC Project

- Implemented IPSec, L2TP, SSL VPN connection (FortiGate to SDDC-VMC)

- Lenovo switch LACP configuration for NUTANIX architecture setup

- Digi Network-attached USB Hub configuration for NUTANIX project

- Data Center jobs as MSP like device audit and BGP core router configuration

- Cloud instance Firewall (Palo Alto, CheckPoint, FortiGate) implementation, support

and troubleshooting in Azure/AWS domain

- Provided maintenance and support/MSP for FortiMail for high-security-email

finance clients

- Implemented Network Packet Broker and WAN Aggregators for Singapore’s ISP

GIGAMON projects

*Reason for leaving the job: looking for a new challenge to grow more

NETS Pte Ltd (September 2018 – October 2019)

Corporate Office, Tiong Bharu Plaza, SINGAPORE

Firewall Engineer under AsiaPac Job-Order

- Network and firewall troubleshooting, BAU and operational IT support

- Implementation of firewall rules daily request from Tufin system

- Managed tickets for firewall and network issues and concerns

- Network configuration task automation via Solarwinds NCM for switches for

Cisco switches and routers

- Router and switch configuration hardening – security compliance and audit

- Liaising with the Information Security hardening –team - compliance

- Network-traffic monitoring and firewall administration and log analysis

a. CheckPoint R80 and R75

b. FortiGate Firewalls

c. McAfee Enterprise Firewall/Forcepoint Sidewinder

iSolutions International, Inc. (August 2014 – March 2017)

Door 11 and 12, PGJ Building, Lanang Davao City PHILIPPINES

Network Engineer Security (Cybersecurity Network Integration) – FULLTIME

- Handled pre-sales technical presentations, POC and post-sales support

- Deployed Endpoint Security Protection w/ DLP and provisioned a Tier1 support

- Enterprise Wireless LAN design and implementation and documentation

(Sophos AP, TrendNET and Ubiquiti)

- Network security design and implementation (Sophos, Cyberoam, and Exinda)

- Implemented User Authentication via captive portal and 2FA via Sophos UTM

- Maintained on-site support and FW/UTM health checks to client’s system

- Windows server 2012/2008 administration for Sophos Endpoint Security console

- Implemented IPSec, L2TP, SSL and HTML5 VPN connection (Sophos-Draytek)

- Bandwidth management, L3 aggregation and control (Mushroom Networks)

- Conducted network monitoring, forensics and control at application-level 7 at

POC stage (Exinda)

- On-site survey for structured cabling and wireless outdoor point to point projects

- Conducted vulnerability assessment web scan before POC (Nessus/Acunetix)

- Facilitated and conducted product knowledge/trainings to colleagues/clients

*Reason for leaving the job: for a greener pasture

St. Camillus Hospital of Mati, Inc (March 2014 – April 2017)

P.O. Box 4, Madang, Mati, Davao Oriental 8200, PHILIPPINES

IT Consultant - PART TIME JOB

- Deployed Endpoint Security Protection and provisioned a support

- Enterprise WLAN design and implementation (Ubiquiti)

- Network security design and implementation (Sophos XG)

- Maintained database server and backups in storage Synology NAS

- Windows server 2012/2008 administration for Active Directory DFS server

- Bandwidth management, L3 aggregation (PfSense)

- Logging/reporting analysis via Sophos UTM and NGFW featured tools

- Enforced and educate IT users of IT policies and procedures

*Reason for leaving the job: project/contractual

Jobs Academy, Inc (May 2012 – June 2014)

LDL Building C. Bangoy Street, Davao City 8000 Davao City, PHILIPPINES

Network-Security Administrator/IT Faculty – FULLTIME

- Supervised and maintained the whole network infrastructure of the school

- Handled preventive maintenance and the all IT staffs service management

- Implemented SNORT open-source IPS/IDS in Linux platform

- Maintained Linux systems like SAMBA server, IP Tables and SQUID web proxy

- Configured and deployed Watchguard XTM2; FortiGate 200A as perimeter FW

- Windows Active Directory domain environment (DNS and DHCP Server)

- Network security and monitoring and also IT policy implementations

- Handled subjects in Diploma in Computer Technology

• Computer Systems and Network Infrastructure (NCII CHS/CSS TESDA)

• Client Server Administration (Windows Server 2008)

• Handled Enterprise Trainings (Linux Apache and Samba server, and IP Tables;

Windows Server 2008 Administration)

*Reason for leaving the job: Training abroad for future IT enhancement

Informatics Computer Institute (November 2010 – January 2012)

SM City Cebu Branch, North Rec Area, Cebu City, PHILIPPINES

IT Lecturer Trainer - PART TIME JOB

- Web Designing and Internet Technology – TESDA training program

- Certified Network Professional Program

• Routing (OSPF, BGP, RIP via simulator)

• Switching (VLAN, LACP, switch stacking)

- NC II Computer Hardware Servicing TESDA program

- Linux Administration (CentOS, RHEL, Fedora)

- Windows Server Administration – Active Directory (Windows Server)

Subsee Philippines, Inc. (October 2010 – January 2012)

Cebu Yatch Club, Pusok Lapu - Lapu City PHILIPPINES

IT Administrator (Systems and Network Administration) – FULLTIME

- Maintained the system and security of the whole network infrastructure (CCTV)

- Hardened the network using basic Pentesting Backtrack tools

- Implemented Dual WAN Balancer, router, switches and office racking system

- Maintained Backup System via NOVA Backup System (QUICKBOOKS files)

- Implemented and maintained LINUX and Active Directory 2003/2008 Servers

- Imported/exported mails and user accounts in MS Outlook email system

- Managed network performance monitoring using Solarwinds and PRTG

- Administered preventive maintenance and desktop support to all computer users

- Managed all wireless networks and IEEE 802.11g/n device such as

- Managed and maintained content security via Netgear UTM5 Firewall

*Reason for leaving the job: Training abroad for future IT enhancement

Holy Child School of Davao (July 2006 – March 2007; June 2008 - March 2009)

Jacinto Street, Davao City, PHILIPPINES

College IT Instructor- PART TIME JOB

- Handled Bachelor’s Degree in IT and Computer Science subjects like:

• Operating Systems Software Engineering MIS and Network Administration

- Administered Associate IT courses / CompTech crash courses like:

• Handled PC troubleshooting and Network Technology w/ basic Electronics

• Delivered hands-on laboratory lectures and demonstration for computer technicians

• Handled Computer Technician crash course, Computer Hardware Servicing for

passing Governmental Certification Exam CHS-NCII

Network Bridging Services, Inc. (September 2007 – October 2008)

F. Torres Street Davao City, PHILIPPINES

IT Systems Officer (BPO Systems and Network Administration) – FULLTIME

- Managed and maintained contact centers IT infrastructure E1 and ISDN VoIP

- Server set up and network packet line monitoring using MRTG

- Administered data capturing via keylogger and live screen monitoring for agents

- Conducted preventive health checks to system and hardware pro-actively

- Designed a Web site via HTML, CSS, Javascript and Dreamweaver

- Windows Server 2003 Active Directory installation and administration

- Configured DCHP, DNS, IIS, and LINUX Samba servers, IP Tables as Firewall

- IT auditing of many different aspects of IT: systems, networks and database

- Handled and managed MS SQL Server 2005 queries and database backup

- Administered the MS EXCHANGE SERVER 2003 and MS Outlook

*Reason for leaving the job: The Company suffers bankruptcy

Columbia Computer Center (October 2006 – October 2007)

City Triangle CM Recto Street Davao City PHILIPPINES

Network Engineer (Computer & Networking Services) – FULLTIME

- Handled network infrastructure and services administration (DNS, DHCP)

- Network-related setup in Win XP, 2000, 98 SE, 2003 and Windows Vista

- Administered a wireless LAN (IEEE 802.11g/n) designing and implementation

- Installed and maintained CCTV IP camera system

- Setup DSL WIFI Linksys, ASUS, Dlink Routers; Cabling System implementation

- Dumb Terminal/N computing implementation

- Administered customer presales and product tech discussions

- ADSL Micronet demo and pre-sales for long haul LAN to LAN connectivity

- Laptop/PC repair and troubleshooting – spare time duty

*Reason for leaving the job: Inadequate Compensation

Korea-Phil Vocational Training Center (June 2006 – November 2007)

TESDA Buhisan Tibungco Davao City, PHILIPPINES

Assistant Trainer (TechVoc Trainings) – Volunteer - PART TIME JOB

- Delivered quality teaching for “Basic Electronics” and “Hardware Troubleshooting and


- Handled Computer Technology Course and Network Technology Course like:

• Computer Technician training course

• Computer Hardware Servicing TESDA Certification Exam

• Software and hardware troubleshooting and preventive maintenance

• Network Technician training course


SonicWall Network Security Administrator (SNSA) SonicOS 7 - 2022

SonicWALL University Portal

SOPHOS Training 2021 – TSE Portal

Employee Training Hub 2021

Enterprise Firewall 6.2 – Self paced, 2020

Fortinet NSE Institute, Partner Portal

2 Days Hands-on LAB

AVI Network L300 Technical Deep Dive, 2020

VMware Office - Suntec Tower 4, Level 6, Singapore

Cisco HyperFlex Black Belt Stage 1 Certification, 2019

Westcon-Comstor LEAP Center Singapore

VMware NSX – Install, Configure and Manage, 2019

VMware Partner Portal 5-Day Training Course

Palo Alto Networks PSE DC & Public Cloud Training, 2018

Palo Alto Networks Office Singapore

Cisco Meraki 360, 2017

Lifelong Learning Institute, Singapore

Sophos Certified Architect

XG Firewall, 2016

Quest Hotel, Archbishop Reyes Avenue, Cebu City

Exinda WAN Optimization, 2015

Holiday Inn & Suites Makati, Ayala Center, Makati, 1224 Metro Manila

Sophos Certified Engineer,2014

88 Corporate Center, Sedeño, Makati, Metro Manila MEC Networks Corporation, 2014 - Network Design and Installation, TE Connectivity Certification

Castle Peak Hotel, F. Cabahug St, Cebu

ICDL – IT Security

Certification, 2014

Genetic Computer School Singapore,Blk 118Aljunied Ave 2, Singapore

Adobe Dreamweaver

CS 5.5, 2012

Genetic Computer School Singapore,Blk 118Aljunied Ave 2, Singapore

Microsoft Certified Desktop Support Technician

Training, 2010

Taughtworks, Inc N Reclamation Cebu

LINUX Systems

Administration, 2008

DabaweGNU, Incorporated Vinzon St., Obrero, Davao City

PC Troubleshooting, 2006 AMA Computer Learning Center Real St.,Tacloban City


(LAN/WAN Cisco), 2006

Genetic Computer Institute Sta. Ana Avenue, Davao City

Structured Cabling

System, 2005 Powertech Specialist, Inc.

Wireless, Subangdaku,

Mandaue City Cebu

Network Technology

Course, 2005

IECEP – TESDA VRC ArchReyes Ave., Banilad, Cebu City

Contact this candidate