syonex Systems/Operations/Networks/Expertise     About

John Sellens

John Sellens is the founder and proprietor of SYONEX, and has extensive experience in system and network administration.

Make the most of not too much: John has extensive experience in making modest resources (time, money, etc.) go a long way, especially in using open source software and tools to provide effective (and cost effective) services and business solutions.

John's areas of expertise include:

  • System and network monitoring and service management
  • Operational readiness and ongoing operations
  • The needs and services of service providers: mail, connectivity, web, etc.
  • System and software integration: putting multiple components together in very effective ways
  • Open source software and system integration
  • Asterisk PBX and VoIP
  • UNIX and variants: Solaris, FreeBSD, Linux, and others
  • Windows and Windows integration
  • Security, firewalls, access controls
  • System and network appliances and their application

John's skills include:

  • Scripting, programming, and "software glue" - perl, shell, awk, C, Tcl, PHP, SQL, etc.
  • Teaching and writing: making the complicated comprehensible
  • Solving business problems with the appropriate application of technology


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©2002-2012 SYONEX all rights reserved -- Last modified: 2009-06-23 15:45:53