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The purpose of this thesis was to create a working prototype of a dynamic TFTP service for DOCSIS-compliant cable modem configuration files that can serve as a drop-in replacement for existing TFTP services while considerably improving the service‟s security and reducing the administrative effort required to create such configuration files. The goal was also to ensure that service does not impact legitimate clients and requires only minimal changes to the provisioning service flows and DHCP services. The paper first explains the components involved and examines an existing reference network and its inherent protocol-related weaknesses. The third chapter then focuses on creating a service blueprint for the dynamic TFTP service using the requirements derived from the examination, with the goal of remedying the detected weaknesses, as well as any weakness dictated by the reference network and those mandated by the ISO 27000. This chapter also defines the KPI and the scientific hypothesis. The next chapter deals with the design of the prototype (e.g. which language to use, how the prototype‟s code should work internally). Chapters five and six explain the code development, the test environment and the gathering of performance data to show how well the prototype performs when compared with the legacy solution. After gathering all the data, it was necessary to compare this to the previously defined requirements and KPI, as well as to the security clauses of the ISO 27000, which is done in chapter seven. The final chapter sums up the results from the previous chapters and presents an outlook for possible new functionality and how the service will most likely enter production service. The conclusion of this thesis is that it is indeed possible to create a dynamic TFTP service that fulfills all the requirements and reaches the necessary KPI values.