I am a Dynamic, Dedicated, Passionate and Quickly Adaptable Freelancer with Technological innovations. I am a 🏅Upwork-Skill-Certified Freelancer with ✅100% JSS ✅ 70%+ Long-Term Clients ✅ 80%+ Clients Recommendation ✅ 90+ Active and Completed Jobs with Positive Feedback🏅Architect Certified on Sophos, Fortinet Firewalls and Endpoints Managements ✅ Others Certification on Network and Security✅ Strong and long Experiences on Fortinet, Sophos, SonicWall, Palo-Alto, PFSense Infrastructures Deployments, Migration and Managements✅ Any kinds of Wireless and Voice Solution Deployments✅ Network, System Security & Compliance Managements✅ Strong Experience on Routing & Switching🏦 Long-Experience with MSP, Corporate and Solution/Service-Provider Sectors. 🏦 Already worked with 90+ clients from different regions such as Asia, Africa, US, Europe etc.
🎖️Certifications (Completed & Enrolled)
• Upwork Skill Certification - Customer Service.
• Certified Architect by Sophos and Fortinet.
🏅 Sophos Certifications:
• Sophos-Firewall v19.5-Engineer.
• Sophos Firewall v19.5-Architect.
• Sophos Firewall v19.5 to v20.0 Certified Architect Delta (AU80).
• Sophos Firewall v19.5 to v20.0 Certified Engineer Delta (EU80).
• Sophos Firewall v20.0 to v21.0 Certified Architect Delta (AU80).
• Sophos Central Endpoint and Server v4.0-Engineer.
• Central Endpoint and Server v4.0-Architect.
• Sophos Central Endpoint v4.0 to v5.0 Architect Delta (AU15).
• Sophos Central Engineer Delta v4.0 to v5.0 (EU15).
🏅 Fortinet Certifications:
• NSE-7 (Network Security Architect) –NSE-ID:- 0Qjbf0qGSd
• NSE-4 (Network Security Professional) – NSE-ID:- GThFxY1viO
• NSE-5 (Network Security Analyst) on FortiAnalyzer- NSE-ID: - 8gIRCniwPN.
• NSE-1 (Network Security Associate) By Fortinet License Number: OYBF7cetpL.
• NSE-2 (Network Security Associate) By Fortinet License Number: FTsFjlmHck.
🏅 Other Certification:
• CNSS (Certified Network Security Specialist) By ICSI, UK License Number: 18427811
• Cisco Certified Network Associate (Routing & Switching) Cisco-ID: - CSCO13303817
Here, I would like to share my Working experiences, fields of expertise and much more-
✅ I have 9 years plus hands-on experiences on Network, System, Security administration, Deployment and Migrations on different Infrastructures along with direct involvements/cooperation on different known issues from Deployment stage to end-user’s support.
✅ Fields of Specialization:
1. Because of having 9 years plus exclusive experiences on different Fortinet, Sophos, SonicWall, PFSense, Palo-Alto and other Infrastructures Deployments and Administration I can work with the Complete Design, Deployments, Migrations and Integrations on these Different types of Infrastructures such as-
• Fortigate, Forti-APs, Forti-Switches, FortiVoice-Enterprise, Forti-Manager, Forti-EMS,FortiAnalyzer, FortiAuthenticator, FortiNAC, Fortinet Security Fabric Devices, FortiSandbox, FortiToken/Mobile/Service.
• Sophos Infrastructures Managements such Firewalls, Endpoints, Switches, APs etc.
• SonicWALL Infrastructures Managements such as Firewalls, NSM, Capture-Clients Endpoints etc.
• Palo-Alto, Barracuda, PfSense, Cisco-Firepower, Firepower-Thread Defence and FMC and Others Firewalls Managements.
• Migration To/From any of these above Infrastructures.
3. Long experiences on the Network and System Administration on these Infrastructures-
• Routing & Switching on Cisco, Mikrotik, Juniper, HP, Dell, Aruba etc.
• Wireless Implementation on Cisco, Aruba, Ruckus, 4Ipnet, Unifi/Ubiquiti, Forti-AP, Cambium, Altai, TP-Link-Omada, Teltonika etc.
• Mail-Server Administration on Office365, G-Suite by Google, Zimbra etc.
• Windows Server Managements.
• Virtualization & Datacentre Managements on VMware, ESXi, vSphere or VCenter, Hyper-V, Synology-NAS/SAN and Others.
• Voice Solution implementation on renowned Voice Solution Providers such as FortiVoice Enterprise, Grandstream, 3cX, Synway, Yeastar-PBX, FreePBX etc.
• Endpoint Solution Deployments on TrendMicro, Sophos Endpoint Protection, FortiClient by Forti-EMS (Endpoint Management Server), ESET etc.
• Complete Video Conferencing Solution on Dahua, Polycom etc.
• Surveillance, Attendance reader solution on Hikvision, Dahua, ZKTecho, Handuri etc.
4. I am a quick and dynamic learner. I can adjust myself with the Technological innovation within a very short amount of time.
5. I am a technical person with a Never Give-Up character.
I have multiples valuable feedback with great reviews on Upwork. You can also have a look at that.
If you have any further query on me just send "Hi" in Upwork.
Palo Alto Firewalls
Firewall
VPN
Network Security
Fortinet
Network Administration
FortiGate Firewall
Security Infrastructure
Wireless LAN Controller
Security Management
Sophos Sophos UTM
VoIP PBX
System Administration
PfSense
SonicWall
Ravi Kant S.
Mohali, India
$35/hr
4.8
5 jobs
With 10+ years in network infrastructure and security, I help businesses resolve the issues that stop daily operations: failed VPNs, blocked firewall traffic, unstable branches, cloud connectivity and VoIP/SIP problems.
My focus is simple: find the actual root cause, restore services with minimum disruption, and avoid risky trial-and-error changes on a live network.
I have supported enterprise, government, data centre and multi-site business networks using Fortinet, Cisco and other leading firewall platforms, with hybrid connectivity across AWS, Microsoft Azure and Google Cloud.
My "Zero-Risk" Methodology
Many engineers rely on "guess and check" troubleshooting. I don't. I never make blind changes on a live production network. Before altering your setup, I map your current design, analyze your routing, and review firewall policies. I always pull backups, engineer a rollback plan, and execute controlled, fully documented changes. My goal is permanent stability, not temporary patches.
Core Expertise & Outcomes Delivered:
Firewall & Threat Management: FortiGate, Cisco, UniFi, and MikroTik. (Comprehensive policy audits, legacy rule cleanup, and strict hardening).
Complex VPN Troubleshooting: Site-to-Site, Remote-Access, IPsec, and SSL VPNs. If your tunnel is unstable or failing, I will stabilize it.
Cloud & Hybrid Infrastructure: AWS (VPC, Security Groups), Microsoft Azure (VNet, VPN Gateway, NSG), and Google Cloud. I build secure, seamless office-to-cloud and cloud-to-cloud bridges.
VoIP/SIP Optimization: Resolving SIP registration failures, NAT traversal bugs, one-way audio, and call drops using precise QoS, Voice VLANs, and Cisco CUBE support.
Advanced Routing & Switching: SD-WAN deployments, dual-ISP failover, VLANs, and comprehensive LAN/WAN/Wi-Fi troubleshooting.
How We Can Partner:
Emergency Troubleshooting: Rapid isolation and resolution of critical connectivity, routing, or security failures affecting your users.
Network Health & Security Audits: Deep-dive reviews to identify vulnerabilities, clean up messy configurations, and provide actionable security roadmaps.
Infrastructure Setups & Migrations: End-to-end planning for new branch offices, secure remote work environments, and physical security networks (CCTV/Biometrics).
Retained Network Support: Dependable, on-demand escalation support for internal IT teams, MSPs, software companies, and business owners.
My core technical experience includes:
• FortiGate configuration, migration and troubleshooting
• Cisco routers, switches, Firewall, Firepower, Voice Gateway and CUBE
• Fortigate, Fortinet, Mikrotik,
• IPsec, SSL and remote-access VPNs
• Site-to-site VPN and multi-site connectivity
• SD-WAN, dual-ISP failover and policy-based routing
• VLANs, routing, NAT, DHCP, DNS and LAN/WAN troubleshooting
• Firewall policy review, cleanup and security hardening
• Wi-Fi, office connectivity and branch network support
• AWS VPC, routing, security groups, VPN and hybrid access
• Azure VNet, NSG, VPN Gateway, peering and hybrid connectivity
• Google Cloud VPC, firewall rules, VPN and network access
• SIP, NAT traversal, RTP, one-way audio and call-drop issues
• Voice VLANs, QoS and firewall policies for voice traffic
• Network diagrams, documentation and handover notes
Where access permits, I take a backup, confirm the rollback plan, make controlled changes, test the traffic flow and document the result. This is especially important on production firewalls, remote branches, VPN tunnels and voice networks, where one quick change can affect another service.
Let’s Secure Your Network
Whether you need a one-time emergency fix, a comprehensive security audit, or ongoing support, I am here to help.
Please share:
Your primary firewall/hardware vendor and model.
The exact issue or project scope (and any recent changes made).
The number of sites or users affected.
Once I understand your exact setup and the business impact, I will provide a clear, safe plan of action to get your network running flawlessly.
Firewall
Network Security
Fortinet
Cisco
VPN
Amazon Web Services
Microsoft Azure
Google Cloud Platform
Cisco ASA
Cisco Firepower Threat Defense
Routing
LAN Administration
WAN Optimization
Wireless Network Implementation
Cloud Security
Security Testing
Network Architecture
Network Administration
Information Security Audit
Troubleshooting
Kevin B.
Chicago, Illinois
$150/hr
5.0
115 jobs
✨🥇🏆 - I help businesses design, deploy, secure, and optimize IT infrastructure. With experience across networking, virtualization, cloud platforms, Microsoft technologies, and cybersecurity, I can step into existing environments, solve complex technical challenges, or build new infrastructure from the ground up.
🏆🥇✨ - My background includes working with enterprise and SMB environments, delivering everything from infrastructure migrations and platform upgrades to security improvements and performance optimization. I focus on implementing solutions that are secure, scalable, and aligned with project goals.
👉 My expertise includes:
✅ - Networking: Cisco, Meraki, UniFi, VLANs, VPNs, routing, switching, wireless deployments, and network troubleshooting.
✅ - Cybersecurity: SonicWall, Palo Alto, Fortinet, Cisco, firewall configuration, VPNs, access control, network hardening, and security best practices.
✅ - Virtualization: VMware vSphere, Citrix Virtual Apps & Desktops, Citrix MCS, PVS, App Layering, XenServer, Microsoft Hyper-V, VDI deployments, and server migrations.
✅ - Microsoft Technologies: Windows Server, Active Directory, Group Policy, DFSR, WSUS, Microsoft Exchange, Microsoft 365, Microsoft Entra ID (Azure AD), and PowerShell automation.
✅ - Storage & Infrastructure: Dell EMC, Pure Storage, SAN deployment, disaster recovery planning, and infrastructure modernization.
✅ - Systems Engineering: Server deployment, cloud migrations, performance tuning, infrastructure upgrades, automation, and complex troubleshooting.
🥇 - I believe technology should solve problems, not create them. My approach is straightforward: understand the objectives, identify the right solution, and deliver high-quality work with clear communication throughout the project. Whether it's a migration, virtualization deployment, network redesign, cloud implementation, security hardening, or resolving a complex infrastructure issue, I focus on delivering results that meet the agreed scope and timeline.
🥇 - If you need an experienced infrastructure engineer for a well-defined project, I'd be happy to discuss your requirements.
Palo Alto Firewalls
Firewall
Network Security
Network Administration
Microsoft Active Directory
Citrix
Cisco Meraki
VMWare
Server Virtualization
Storage Area Network
Ubiquiti
Hosting Setup
Cloud Migration
Email Security
Office 365
Fortinet
GoDaddy
Microsoft Hyper-V Server
WiFi
Microsoft Azure
Waqas Q.
Islamabad, Pakistan
$35/hr
4.9
37 jobs
Top Rated Plus IT Professional with 15+ years of enterprise experience helping businesses design, troubleshoot, secure, and optimize networks, Microsoft 365 environments, Windows servers, VPNs, and cloud infrastructure.
I have worked with leading organizations including Accenture, Hewlett Packard (HP), Cisco, and Australian Managed Service Providers such as BaseHost, MACIT, and Easy Internet Services, supporting businesses ranging from small offices to large enterprise environments.
I specialize in helping businesses keep their IT infrastructure secure, reliable, and running efficiently through proactive support and practical solutions.
Core Expertise
Managed IT Services (MSP)
Level 1–3 Help Desk Support
Microsoft 365 Administration
Active Directory & Entra ID
Windows Server Administration
Windows 10/11 & macOS Support
User Onboarding & Offboarding
VPN Configuration & Troubleshooting
Printer & Peripheral Support
Remote Desktop Support
Email Migration & Administration
Networking
Cisco Routing & Switching
Enterprise Wireless (Cisco & Aruba)
VLANs, STP, OSPF, BGP
VPN & Site-to-Site Connectivity
Firewall Configuration
DNS, DHCP & TCP/IP
Cisco Meraki
Network Troubleshooting
Network Documentation
Cloud & Infrastructure
Microsoft 365
Exchange Online
SharePoint
Teams
Intune
Azure Fundamentals
Google Workspace
Virtual Machines
Backup & Disaster Recovery
Automation
Python for Network Automation
Ansible
Network Monitoring Scripts
Configuration Automation
Operational Reporting
Process Automation
Services I Offer
✔ Microsoft 365 Administration
✔ Windows & macOS Support
✔ Active Directory & Entra ID
✔ Network Troubleshooting
✔ VPN Setup & Support
✔ Cisco Networking
✔ Firewall Configuration
✔ Python Network Automation
✔ WordPress Support
✔ Technical Documentation
✔ Remote IT Support
VPN
Python
Virtual LAN
IPv6
Cisco Router
ITIL
JNCIA-Junos
Network Engineering
Cisco IOS
Aruba
Ansible
Juniper
Cisco Certified Network Associate
Yun P.
Littleton, Colorado
$55/hr
4.6
8 jobs
I am a CCIE-certified Network Engineer with over 14 years of experience designing, upgrading, and supporting on premise and hybrid enterprise network infrastructure across healthcare, financial services, professional services, public sector, and managed services environments.
My background is rooted in deep hands-on expertise across routing and switching, data center networking, WAN architecture, and advanced troubleshooting in complex, multi-vendor environments. I have worked extensively with platforms including Cisco, Palo Alto, Infoblox, Arista, and Juniper.
Throughout my career, I have led large-scale remote and hybrid deployments, stabilized critical network environments, and improved uptime, performance, and scalability across both data centers and distributed enterprise systems. I bring a strong ability to partner cross-functionally with infrastructure, security, and operations teams to deliver resilient, high-performing network solutions.
CORE COMPETENCIES:
★ Data Center Architecture
★ Routing & Switching
★ SD-WAN
★ Network Security
★ WAN Architecture
★ Infrastructure Modernization
★ Advanced Troubleshooting
★ Cisco Nexus & Catalyst
★ Palo Alto / Fortinet Firewalls
★ Infoblox
★ BGP / OSPF / EIGRP
★ MPLS / DIA
★ Network Automation (Ansible)
★ High Availability & Resiliency
★ Leaf & Spine / Core & Distribution & Access
TOOLS:
Cisco IOS | Cisco NX-OS | Cisco Nexus (9000/7000/5000/2000) | Cisco Catalyst | Cisco ACI | Arista EOS | Juniper MX/EX | ArubaOS | Nokia OS | Cisco Meraki | BGP | OSPF | EIGRP | vPC | STP | VDC | VXLAN | EVPN | NAT | QoS | Multicast | VRF | DMVPN | IPsec | HSRP | VRRP | GLBP | LACP | LLDP | CDP | Cisco Catalyst SD-WAN | Viptela SD-WAN | SilverPeak SD-WAN | MPLS | DIA | Metro Ethernet | Palo Alto | Fortinet | Cisco ASA | Cisco ISE | Cisco DNA | Wireshark | Ansible | TCL Shell | Python | SecureCRT | PuTTY | ServiceNow | Microsoft Teams | Zoom | Webex | Outlook | Visio
CERTIFICATIONS:
CCIE Routing & Switching #51201 | CCNP | CCDA | MCSE
Palo Alto Firewalls
Network Design
Network Architecture
Network Engineering
Network Planning
Network Security
Network Monitoring
Network Equipment
Network Traffic Analysis
Wide Area Network
Local Area Network
Wireless Network Implementation
Cisco Certified Internetwork Expert
Cisco ACI
Cisco Meraki
Cisco WLC
Cisco ISE
Network Administration
Cisco Certified Network Professional
Cisco Router
Ahmed O.
Riyadh, Saudi Arabia
$59/hr
5.0
132 jobs
Am a CCIE#26611 with extensive experience in Routing & Switching, Security, Datacenter, Virtualization, Public Cloud, Artificial Intelligence Network Skills & Agentics, Programmability & Automation.
Am delivering unique & absolutely different service for the below technologies:
* SDN Datacenter: Cisco ACI, VMware NSX, Nutanix Flow, Arista.
* SDN Storage: Nutanix HCI, VMware VSAN.
* SDN Access: Cisco DNA, LISP Implementation, Cisco Spaces, Cisco ISE, PacketFence.
* SDN WAN: Cisco SDWAN, VMware VeloCloud, SilverPeak, PaloAlto SDWAN, FortiGate SDWAN, Meraki.
* Programmability & Automation Controllers: Python & API tools to automate business intent & workflows within networks, Ansible, Chef, NSO, Terraform, OpenShift, AI network skills.
* Monitoring Applications: Zabbix, SolarWinds, Home Made Custom Tools, Nmap, Packet Tracer (Wireshark), Splunk, Wazuh, ContraForce, ServiceNow and much more.
* Routing & Switching and Wireless Technologies: Cisco, Mikrotik, Juniper, FS, Arista, HPE, Huawei.
* Security: Cisco, PaloAlto, Meraki, FortiNet, Ubiquiti, VMware MDM, Infoblox.
* Datacenter, Cloud Computing, Cloud Native, Virtualization & HCI Solutions.
* Public Cloud: Design, Setup & Administer Tenants on AWS, Azure, GCP & OCI.
* Micro-segmentation & Containerized Applications: Docker, Kubernetes.
* API Gateways & Swagger Documentation.
* Python Scripting for DevOps, SecOps, NetOps & I network skills.
* Technical Writing & Documentation.
Please refer to my LinkedIn account aossama.
Certifications:
* CCIE Enterprise CCIE#26611.
* Cisco CCNP DevNet.
* Cisco CCNP Enterprise.
* Cisco CCNP Datacenter.
* Cisco ACI Certified Specialist.
Palo Alto Firewalls
Cisco
Software-Defined Networking
Cisco Certified Internetwork Expert
Information Technology
Python
Network Engineering
Network Monitoring
Network Design
Network Security
Cisco Meraki
MikroTik
Fortinet
Server & Virtualization Software
Artificial Intelligence
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