The Andy Flett inventory management method uses an automated process to discover and report on inventory across a network. It begins with an initial list of known devices and expands that list by querying each discovered device for other active devices on the network. The process runs unattended and can repeat indefinitely to continuously update the inventory report. Each run produces an updated report of all discovered devices, those that could not be found, and new discoveries.
Learn the methods of device discovery and classification in OpManager, the network monitoring software. Learn more from https://www.manageengine.com/network-monitoring/
The following Document outlines what we believe are the top 20 Windows tools every System Administrator should know or be familiar with. Some will you most likely already know about, but we hope you'll find plenty of information here that you didn't know.
Everyone that deals with Windows in a system administrator capacity has to know about Task Manager. The nice thing is it keeps getting better with each new version of Windows.
you are to simulate a dispatcher using a priority queue system. .docxtroutmanboris
you are to simulate a dispatcher using a priority queue system.
New processes are to be entered using a GUI with priority included
(numbering should be automatic). Processes are also to be terminated
by GUI command. Context switches are to be by command with the cause of the
switch being either a blocking call, time slice exceeded or termination.
Assume only one CPU.
Priorities and numbers of processes can be kept small, just big enough
to demonstrate the required functionality. You may pre-populate the
queues initially from a data file. I am looking at the mechanism as you
are NOT creating actual processes, just simulating them.
Functionality to be provided by you:
1. Priority based Ready Queue(s).
2. Blocked list.
3. Output of complete system status after every context switch showing
ready, blocked, and running processes.
4. GUI for operations/control/output.
.
PCD – Process Control Daemon is a light-weight system level process manager for Embedded-Linux based projects (consumer electronics, network devices, etc.).
PCD starts, stops and monitors all the user space processes in the system, in a synchronized manner, using a textual configuration file.
PCD recovers the system in case of errors and provides useful and detailed debug information.
The Linux audit framework as shipped with many Linux distributions system provides a framework that reliably collects information about any security-relevant events. The audit records can be examined to determine whether any violation of the security policies has been committed, and by whom. Linux audit helps make your system more secure by providing you with a means to analyze what is happening on your system in great detail. It does not, however, provide additional security itself—it does not protect your system from code malfunctions or any kind of exploits. Instead, Audit is useful for tracking these issues and helps you take additional security measures to prevent them. This session provides a basic understanding of how audit works, how it can be set up, and how to use various utilities to display, query and archive the audit trail and how Linux Audit can be part of any overall Defense in Depth strategy.
Learn the methods of device discovery and classification in OpManager, the network monitoring software. Learn more from https://www.manageengine.com/network-monitoring/
The following Document outlines what we believe are the top 20 Windows tools every System Administrator should know or be familiar with. Some will you most likely already know about, but we hope you'll find plenty of information here that you didn't know.
Everyone that deals with Windows in a system administrator capacity has to know about Task Manager. The nice thing is it keeps getting better with each new version of Windows.
you are to simulate a dispatcher using a priority queue system. .docxtroutmanboris
you are to simulate a dispatcher using a priority queue system.
New processes are to be entered using a GUI with priority included
(numbering should be automatic). Processes are also to be terminated
by GUI command. Context switches are to be by command with the cause of the
switch being either a blocking call, time slice exceeded or termination.
Assume only one CPU.
Priorities and numbers of processes can be kept small, just big enough
to demonstrate the required functionality. You may pre-populate the
queues initially from a data file. I am looking at the mechanism as you
are NOT creating actual processes, just simulating them.
Functionality to be provided by you:
1. Priority based Ready Queue(s).
2. Blocked list.
3. Output of complete system status after every context switch showing
ready, blocked, and running processes.
4. GUI for operations/control/output.
.
PCD – Process Control Daemon is a light-weight system level process manager for Embedded-Linux based projects (consumer electronics, network devices, etc.).
PCD starts, stops and monitors all the user space processes in the system, in a synchronized manner, using a textual configuration file.
PCD recovers the system in case of errors and provides useful and detailed debug information.
The Linux audit framework as shipped with many Linux distributions system provides a framework that reliably collects information about any security-relevant events. The audit records can be examined to determine whether any violation of the security policies has been committed, and by whom. Linux audit helps make your system more secure by providing you with a means to analyze what is happening on your system in great detail. It does not, however, provide additional security itself—it does not protect your system from code malfunctions or any kind of exploits. Instead, Audit is useful for tracking these issues and helps you take additional security measures to prevent them. This session provides a basic understanding of how audit works, how it can be set up, and how to use various utilities to display, query and archive the audit trail and how Linux Audit can be part of any overall Defense in Depth strategy.
1. INVENTORY MANAGEMENT – THE ANDY FLETT METHOD
• A “simple and quick” inventory reporting tool, for small “site surveys” where “a few” PC
Names are known (or even just a range of IP Addresses) – fire and forget method – launch
the process and leave it to progress on its own.
• Creates spreadsheet showing PC details (and attached monitor details) – “finds” PCs that
may not initially be known about or on the original list, if powered and networked
• Can be configure to run repeatedly to audit newly found items immediately without further
intervention
• Will list ALL newly discovered items UNLESS restricted to certain network segments – new
and previously undiscovered items are “recorded” – even if not fully audited, at least you
know “they exist”!
• OPTIONAL - Can be used to list details of all previously logged on users of each PC and when
they last used it
• OPTIONAL - Can identify printers (local and network) defined on each PC
PRINCIPLE OF OPERATION
1. Supply a (PRIMARY) list of Netbios Names to be reported on (DOESN’T need to be complete
or accurate – see why below)
2. Run the AUDIT ROUTINE for the first time. TARGET Netbios Names that ARE detected as
active (and can be administered) are queried and relevant details appended to current audit
report
3. At the end of the PRIMARY audit of an individual PC, a SECONDARY audit is performed
querying the recently discovered PC to ask “what other PC Netbios Names are known about”
by that TARGET PC. This SECONDARY audit occurs while the PRIMARY audit continues with
the next Netbios Name in the PRIMARY list. (If the SECONDARY audit of a recently
discovered PC is still in progress and as a result of a subsequent PRIMARY audit – another
SECONDARY audit is launched, but that subsequent SECONDARY audit is abandoned. Only
one SECONDARY audit can be performed at a time)
4. The SECONDARY audit runs a restricted NET VIEW command on the TARGET PC. A list of
Netbios Names may be returned. This list is checked on the CONTROLLING PC. If a returned
Netbios Name already exists on the PRIMARY list, it is ignored (queried PCs can repeatedly
report the “same” discovered Netbios Names). If a returned Netbios Name is NOT detected
on the PRIMARY list, it is added to a list of Netbios Names for a subsequent run of the
routine (i.e. the PRIMARY list can be extended automatically)
2. 5. At the end of the “first run” of the audit routine there will be a) an Audit Report of all PCs
discovered b) a list of PCs that were intended to be audited but NOT discovered and c) a list
of Netbios Names that were unknown at the beginning of the run, but were discovered
during processing
6. Combining items b) and c) above creates a new list of “items still to be discovered and
reported on” – which can be used as the PRIMARY list on a subsequent run of the routine, to
“extend” the current audit report
7. In any subsequent run of the Primary Audit routine, any items “recently automatically
discovered” which have ALREADY been previously successfully audited within the current
audit report, are ignored
Examples of the operation of the routine appear below
Obviously – this routine can “discover” other PCs that are detected as active which “may not be
known about” in the original list
The entire process runs unattended – and can be configured to repeat itself indefinitely, substituting
a “new list” to audit in place of the previous PRIMARY list at the end of each successful run
3. REPLY Received – the computer being queried is currently active, and has responded with the
following details which will be added to the current audit report
Starting Remote PC Query Routine – as a secondary process – while this computer is active, and as
long as another similar query process is NOT active, it will be queried to find out what other
computers is can detect nearby (via a NET VIEW command running on that computer)
<COMPUTER> already exists in the current audit report – means that this computer was identified
as a (once) active computer by successfully querying another active computer, and an audit record
already exists in the currently generated report
TIMEOUT Received – the computer is currently not responding