Experiencing Network technicalities,Network System Security issues,Need a Complex Computer Network Designer? I am a Network System Administrator with a vast knowledge and experience of over 5 years in Computer Network Design,Network Security,Network Administration and System Pentesting. I have an IT consulting firm (Tech IT Solutions LTD). My firm so far has been hired by 4 Government Parastatals in Kenya to design their Computer Networks and also recently it was hired to do Network System Penetration testing in the Ministry of Defence.