Yes, it is POSSIBLE to connect the systems with each other and MAINTAIN a network without having a central server. This type of interconnection is COMMONLY called as peer-to-peer network. When it comes to security, each system acts as a server for other and therefore all the systems or nodes on a network are to be covered with the same level of security. However, because it’s a cost-saving approach and is generally CONSIDERED where no much emphasis is required on security such as in CASE of every small organization. 

Yes, it is possible to connect the systems with each other and maintain a network without having a central server. This type of interconnection is commonly called as peer-to-peer network. When it comes to security, each system acts as a server for other and therefore all the systems or nodes on a network are to be covered with the same level of security. However, because it’s a cost-saving approach and is generally considered where no much emphasis is required on security such as in case of every small organization.