Cryptographic protocols´ performance and network layer security of RSMAD

The paper discusses in a system view the security architecture of network layer of the Radio System for Monitoring and Acquisition of Data from Traffic Enforcement Cameras (in short RSMAD). The safety of this layer of the system is provided basing primarily on Virtual Private Networks (in short VPN). Two protocols have been used for their implementation: IPsec (in tunnel mode of ESP protocol) and L2TP. Applied cryptography data protection mechanisms, including the type and parameters of the VPNs have been selected on the basis of carried out tests and measurements, which results are presented and discussed in this paper. The study presents also detailed comparative analysis in terms of performance AES-128 and Triple-DES algorithms carried out in RSMAD.