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Understanding IP Encryptor Performance Theoretical Limitations and Optimisation Techniques Introduction

The headline performance figure for an IP encryptor is its throughput. This is the volume of data that it can receive, process (i.e. encrypt or decrypt) and then re-transmit in a given period of time. However, measuring throughput or comparing figures from different manufacturers isn’t as straightforward as one might expect. So how do you ensure you’re really getting the performance you need? And how can you obtain the best possible performance from your encryptors?