By David Basin
This ebook explores primary rules for securing IT structures and illustrates them with hands-on experiments that could be conducted via the reader utilizing accompanying software program. The experiments spotlight key details defense difficulties that come up in sleek working structures, networks, and net purposes. The authors clarify the way to determine and make the most such difficulties they usually exhibit diverse countermeasures and their implementation. The reader therefore profits a close figuring out of the way vulnerabilities come up and functional event tackling them.
After providing the fundamentals of defense rules, digital environments, and community prone, the authors clarify the middle safety ideas of authentication and entry keep an eye on, logging and log research, net software defense, certificate and public-key cryptography, and hazard administration. The booklet concludes with appendices at the layout of comparable classes, file templates, and the fundamentals of Linux as wanted for the assignments.
The authors have effectively taught IT defense to scholars and pros utilizing the content material of this e-book and the laboratory atmosphere it describes. The booklet can be utilized in undergraduate or graduate laboratory classes, complementing extra theoretically orientated classes, and it may possibly even be used for self-study via IT execs who wish hands-on event in utilized details safety. The authors' helping software program is freely to be had on-line and the textual content is supported all through with exercises.
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Extra info for Applied Information Security: A Hands-on Approach
Over the Internet) might disable some vulnerabilities and thus make it impossible to successfully complete some assignments. ch. , there is no graphical user interface installed and the machine’s operating system can only be accessed using a simple command-line interface. Finally, mallet plays the role of the adversary’s machine, having a similar desktop environment to that of alice, with the necessary software to complete the attacks preinstalled. Note that the virtual machines delivered as vdi files contain the necessary configurations for automatic configuration of interfaces according to the network setup shown in Fig.
Inexperienced users often install services that are unneeded for their purposes simply to get applications quickly up and running, or to ensure that their system provides full functionality. From the adversary’s point of view, every running service provides a potential point of entry into the system. Noteworthy here are default services that are not monitored. These pose a serious security risk since they often run with default configurations and are not regularly updated. Hence, deactivating or restricting unused services are easy ways to increase system security.
Mallet@mallet:$ sudo nmap -sV -sT -p 2049 alice As in the case of TCP, Nmap correctly considers the port to be filtered this time, since it did not receive a TCP connection reset that would indicate a closed TCP port. 13 How could you configure iptables so that the port scan would indicate that the port is closed? 14 The firewall example implements a blacklist approach to access control: All undesirable connections are explicitly prohibited and everything else is allowed by default. The opposite approach is the whitelist approach, where authorized connections are explicitly permitted and everything else is prohibited by default.