Understand the forms of user which exist in Windows and Linux, and the difference between user and kernel modes
- [Voiceover] Code is executed in the form of processes,…and a process has an operating context.…In both Windows and Linux,…a process operates in one of two modes,…user mode, and system mode,…which is also known as kernel, or supervisor mode.…In fact a single process,…will often switch between the two modes,…with a user mode process switching to kernel mode…when it makes a system call.…User processes run in their own address space,…which is isolated from the address space…of other active processes.…
They make system calls to access…any of the computer resources that they need.…Processes operating in kernel mode are privileged,…and are granted access to all computer resources.…The operating system will execute largely in kernel mode.…The kernel context in Linux is further broken down,…into kernel interrupt context, or kernel user context.…The former is for code executed as a result of an interrupt,…and the latter by user request via a system call.…
At a microcode level, operating systems provide…different levels of access to resources,…
An overview of the CEH exam, blueprint, and eligibility criteria can be found at https://www.eccouncil.org/programs/certified-ethical-hacker-ceh/.
- What is enumeration?
- Understanding NetBIOS, SMB, SAMBA, and RPC
- Profiling hosts
- Investigating interfaces
- Enumerating SMB
- Enumerating SNMP and RPC
- Enumerating the Internet
- Working with other enumeration tools
Skill Level Intermediate
1. Basics of Enumeration
2. Local Host Enumeration
3. Remote Hosts
4. Enumerating Web Apps
5. Enumerating the Internet
6. Other Enumeration Tools
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