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David Fergusson is a highly experienced network engineer with expertise in firewalls, routing & switching, and various technologies from companies such as ARO Technology, DS Smith, and Amey. With a strong background in Cisco networking, David has also worked with Fortinet, Draytek, and other technologies in previous roles at Airband Community Internet, Merseyside Police, Unilever, and more. David holds certifications in CCNA and CCNP from Cisco.