Network & Support Specialist
Configuring routers, switches, and fiber networks using Cisco & MikroTik. Experienced in GPON/FTTH deployment, ISP operations, VLAN setup, and NOC technical support.
01 / About
I am Md. Mostafa Raihan, a Network & Support Specialist focused on building fast, reliable, and secure connectivity. Having completed intensive industrial attachment training at One Sky Communications Limited, I bring practical hands-on experience in configuring Cisco enterprise switches, MikroTik RouterOS, and GPON/FTTH fiber infrastructure. My goal is to maintain maximum network uptime, optimize routing traffic, and deliver reliable technical support.
02 / Skills
03 / Experience
One Sky Communications Limited
Completed practical network training inside a live Internet Service Provider (ISP) environment at One Sky Communications Limited. Worked alongside senior engineers to learn daily router setups, VLAN segmentation, MikroTik PPPoE configuration, OSPF routing, and NOC customer troubleshooting.
04 / Academic
Institute Of Computer Science and Technology (ICST), Feni
Studying Computer Science and Technology. Learning the core principles of computer networking, operating systems, hardware maintenance, and data communication.
Chhagalnaiya Academy
Completed secondary school education with strong foundations in basic mathematics, general science, logical problem-solving, and computer basics.
05 / Certification
One Sky Communications Limited
Earned official industrial attachment certificate after completing physical training labs at One Sky Communications Limited. Proves practical skills in ISP setups and office networking.
Practiced configuring Cisco switches, setting up MikroTik RouterOS features, provisioning GPON OLT/ONU fiber modems, checking routing tables, and fixing connection issues.
06 / Technical Projects
Project-01 · DNS Configuration
Configured and tested a DNS server in Cisco Packet Tracer to provide domain name resolution across the network. Set up the raihan.com domain, mapped it to the DNS server IP address, and verified successful resolution using ping.
Practical DNS configuration, TCP/IP networking, and domain resolution skills
GitHub ↗Project-02 · DHCP Server Configuration
Configured and tested DSCP in Cisco Packet Tracer to classify and prioritize network traffic based on different service requirements. Applied QoS policies to manage traffic priority and verified proper packet marking and traffic handling across the network.
Automated and reliable IP address management
GitHub ↗Project-03 · Secure Remote Login (SSH)
Enabled encrypted SSH access on Cisco routers and switches while blocking unsafe Telnet connections for secure remote administration.
Implemented safe encrypted device logins
GitHub ↗Project-04 · Dynamic Routing (OSPF)
Set up OSPF dynamic routing across routers so data traffic can automatically reroute if a primary router goes offline.
Basic Layer 3 routing configuration skills
GitHub ↗Project-05 · ISP Subscriber Setup (PPPoE)
Configured a MikroTik PPPoE server with user accounts and bandwidth limits to manage broadband internet subscribers efficiently.
Practical ISP broadband configuration experience
GitHub ↗Project-06 · Fiber Optic Setup (GPON OLT)
Configured GPON OLT units and ONU subscriber modems to deliver high-speed optical fiber internet to client locations.
Hands-on fiber optic access setup experience
GitHub ↗Project-07 · MikroTik Firewall & QoS
Created MikroTik firewall rules to block unauthorized connections and set bandwidth queues to share internet speed fairly.
Network security and bandwidth control skills
GitHub ↗Project-08 · NOC Network Monitoring
Monitored active network status using ping, traceroute, and log tools to quickly find broken fiber lines or fix disconnected client modems.
Practical NOC troubleshooting experience
GitHub ↗07 / Contact
