Today, most of the computer applications are network based and there is a steady grow in terms of its size and demand. To keep pace with its security aspects lot of techniques are used like IDS (Intrusion Detection System), anti-virus system, etc. All are performing their jobs quite well but produced high volume alarms or messages. Further they are not able to unify the network. Hence to overcome these problems the authors recommend the use of network security situation assessment method. This paper starts with the discussion of network related security situation concept and proceeds with two concern techniques like SVM (Support Vector Machine) and ESN (Echo State Network) which are discussed in detail.