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Nt1310 Unit 1 Case Study

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Tichaona Zvidzayi; 613z0022

Question 1
a) How SSL(Secure Socket Layer) works
The reasons why SSL exists are encryption and identification (Vaughan-Nichols, 2013). Encryption hides the information moving between two computers and identification makes sure that you are talking to the right person. If the server cannot verify itself, the client (browser/server) displays a security warning because someone might be pretending to be a legit website for personal gains. Vaughan-Nichols, 2013

SSL stages: The client initiates a connection with the web-server and prompts the web-server to verify if it is a legit website. The website will then attempt to verify itself by sending a copy of SSL certificate. The client will then confirm if it can trust the website or not, …show more content…
IDS/IPS will scan for known events and if found it is logged or is rejected. IDS/IPS offer passive monitoring and when it fails it opens the internal network to the external network network(fail-open) whilst firewall provides an active filtering and when the firewall fail it closes the internal network to the external network.

Firewalls look for intrusions and controls access between networks to prevent intrusion. Unlike IDS, firewalls do not signal attacks from within a network. An IDS evaluates a suspected intrusion once it has taken place and signals an alarm (Yadav, 2017). IDS/IPS also watches for attacks that originate from within a system often by monitoring signatures (network patterns)

d) Timm suggests that, how the new intrusion detection system is implemented determines positive returns (Timm, 2002). ROI has been difficult to quantify because it is hard to calculate the risk involved accurately and incidents statistics are not always

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