Abstract
This paper presents a case study involving the deployment of a secure environment on the computer network at the City Hall in Palmeira das Missões - RS, throughout the definition of a physical and logical infrastructure, supported at concepts of management of computer networks and information security. Through the creation of Vlans (Virtual Local Areas Networks) and definition of DMZ (Demilitarized Zone) defined to achieve the level of security and network management required by the IT department, as well as provide greater reliability and integrity of information that travel on the network so that the users can perform their tasks more dynamically in a secure and agile environment. The main contribution of this case study was the implementation of a security and management in the computer network at the City Hasll in Palmeira das Missões – RS.
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