A system for securing access to a network asset and including a launcher and a master each configure to generate a new unique and temporary hostname and virtual machines each having an IP address associated to a corresponding generated unique, secret and temporary hostname. Each virtual machine operates either as a server hosting the network asset or a reverse proxy or a firewall between a client device having the launcher stored in the memory thereof and the corresponding network asset. A new virtual machine is created each time a new hostname is generated and is destructed after the corresponding hostname expires. The system also includes a DNS server storing a database of host records each including a public IP address of one of the virtual machines and the corresponding hostname, the database of host records being updated each time a new virtual machine is created in a DNS domain.