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      Figure 2.8 Firewall that allows remote user access to a firewall device.

      2.7.7 Integrity in Service

      Integrity of operation is where the firewall controls the computer’s files to change them or how they are released. If such an alteration is detected, the user will be informed and the application will not be able to execute or transmit IoT information. Sometimes those improvements could have been used in an update, but now you will be told of it, if, it is changed by the malicious software.

      2.7.8 Sensing of Infringement

      Intruders use various techniques to breach the computer’s protection. Intrusion detection checks incoming system signature data and notifies you when these attempts are detected. With intrusion detection, you can see what a hacker wants to do to hack your computer.

      Notifications help you to see what’s going on your firewall and to warn you of potential intrusion attempts on your device in different ways.

2.8 Monitoring of Firewalls and Good Management

      2.8.1 Surveillance

Whatever firewall you use, it is a smart thing to obey and occasionally show firewall logs. You will improve your protection automatically through careful observance of your logs. Most hacks can theoretically be avoided if people track their logs because most hackers will check a laptop before hacking them. When a participant in the PC nursing supervisor detects these tests, they will check that their machines are sensitive to what they were checking. You’ll be shocked by the amount of people WHO tries to access your laptop, but not your results, until you start installing your firewall and reviewing logs.

      The reasons behind tracking the log files are three: There are three key reasons:

      Preventative Measures: You can see what harbors and services hackers are able to manipulate by tracking the firewall logs. Such knowledge will then be used to guarantee that the machine is safe against such exploits. For starters, when you see on your logs that other people are checking and investigating your machine for port 3127, you will discover that people and viruses will check for the backdoors on your machine which are left behind by the early version of the My Doom virus. You will then ensure that this new attack doesn’t damage the computers.

      2.8.2 Forensics

      If your machine is hit by a long distance virus, then you can check the date and time it was installed on your device by the hacker. Forensics: You will be able to search your log files for maltreatment of this data through all of this point of time, however the hacker has infiltrated your computer. This information is then used to encrypt your computer.

      Officials reporting: With the data stored in the log files, you are able to supply officials with the details whether a hack or attempt is a success. The logs send you the IP address, system and time and date of the offending device.

      2.8.3 Secure Firewalls for Private

      2.8.4 Business Firewalls for Personal

      2.8.5 IoT Security Weaknesses

      There’s no single IoT security vendor that can provide a full end-to-end security solution. However, some organizations provide more than others and some may provide a full end-to-end IoT security solution in tandem with their partner ecosystem.

      Authentication/authorization is one of the biggest issues to tackle in IoT security, followed by access control and data encryption. IoT security respondents didn’t consider firewall, passwords, server security and privacy as a major weakness.

2.9 Conclusion

This chapter uses a value-driven reasoning method to establish goals for securing IoT. Some studies [9] have used Keeney’s meaning-focused approach in order to explain the goals and their relationships dependent on people’s interest, according to Keeney [20] values of knowledge. and their relationships based on people values and learning the importance of firewalls Figure 2.9.