Cybersecurity Network Security Networking Troubleshooting Engineering Network Administration Ethical Hacking Network Engineering Network Operations Center NOC Cisco Firewall Security Routing Cisco Certified Checkpoint Cisco ASA Palo Alto Networks Cisco Systems Products Fortinet Foreign Exchange FX Trading CEH                                                                     computer systems and network Greenwich university A/L Darmasoka collage   Assistant Network Engineer LankaClear Network Administrator Tektron Corporation Network Officer Srilanka Telecom Plc  