nagios system and network monitoring 2nd edition download

... The Practice of System and Network Administration Second Edition This page intentionally left blank The Practice of System and Network Administration Second Edition Thomas A Limoncelli ... gateway, and so on IEEE 802.1x is a better way to this This standard for network access control determines whether a new host should be permitted on a network Used primarily on WiFi networks, network ... Limoncelli, Tom The practice of system and network administration / Thomas A Limoncelli, Christina J Hogan, Strata R Chalup.—2nd ed p cm Includes bibliographical references and index ISBN-13: 978-0-321-49266-1

Ngày tải lên: 14/08/2014, 14:20

... patch panels and network or console equipment will have lots of cables in them and require much wider and deeper cable management than racks that contain a few hosts with a few network and console ... may have three network interfaces: one for the internal, protected network; one for the external, unprotected network; and one for a service network that is accessed from untrusted networks through ... convenient and help to keep the wiring neat as multiple network interfaces that belong on different networks, both the interfaces and the cables should be labeled Color coding the network cables

Ngày tải lên: 14/08/2014, 14:20

... advances sufficiently, however, the system becomes more secure and easier to use ❖ Security and Reliability Reliability and security go hand in hand An insecure system is open to attacks that make ... external outlets for providing power and the call center phone services and appropriate cables and equipment standing by, including tents and folding tables and chairs When a strong earthquake ... your power and HVAC systems, among other things For this sort of design, you need to understand circuit diagrams and building blueprints and consult with the people who are designing the system to

Ngày tải lên: 14/08/2014, 14:20

... company’s monitoring of its computer and network resources, including activity on individual computers, network traffic, email, web browsing, audit trails, and log monitoring Because monitoring ... policies, monitoring and privacy policies, and creating and implementing the remedies for any policy breach The legal department should be involved in such policies as determining whether to track and ... computer and network resources and what they are permitted to use those resources for The AUP may also include some explicit examples of unacceptable use The legitimate users of the computer and network

Ngày tải lên: 14/08/2014, 14:20

... However, as systems and networks grow and become morecomplicated, it becomes impossible for a single person to understand, main-tain, and run the entire network As a system grows, handoffs become ... Understanding of the System Finally, the ultimate debugging icing is to have at least one person who stands, end to end, how the system works On a small system, that’s easy Assystems grow larger and ... place 15.1.3 Be Systematic It is important to be methodical, or systematic, about finding the cause andfixing it To be systematic, you must form hypotheses, test them, note theresults, and make changes

Ngày tải lên: 14/08/2014, 14:20

... many case studies (Epp and Baines 1992;Ondishko 1989; Schafer 1992b; and Schwartz, Cottrell, and Dart 1994).Harlander (1994) and Miller and Morris (1996) describe useful tools and thelessons learned ... service Nagios and Big Brother are commonly used real-timemonitoring systems cus-Typically, the two types of monitoring are performed by different systems.The tasks involved in each type of monitoring ... Monitoring uses CPU and memoryresources, so you don’t want your monitoring to make your service worse.Security is important for monitoring systems • Within a local area network, network bandwidth is

Ngày tải lên: 14/08/2014, 14:20

... such as CPUand memory, might also be needed If you have planned to expand by acquir-ing whole new systems, such as stand-alone network storage arrays, be sure to include spares for those systems ... establish hardware standards for storageand file servers Make yourself available to recommend systems and to workwith your customers to identify potential candidates for standards This strategy ... reliability and performancerequired for specific applications Understanding the basic relationship ofstorage devices to the operating system and to the file system gives you aricher understanding

Ngày tải lên: 14/08/2014, 14:21

... 721some kind of native authentication system that handles its own usernameand password system However, well-designed systems can be configured toswitch that off and simply use the preauthenticated ... Servers require regular backups, software and OS up-grades and patches, monitoring, and hardware upgrades and maintenance.Some of this can be optimized and automated through techniques discussedelsewhere ... hijacked sites and bandwidth include distributingpirated software (“warez”), generating advertising email (“spam”), launchingautomated systems to try to compromise other systems, and even competingwith

Ngày tải lên: 14/08/2014, 14:21

... is delegation System administration is about trolling machines and networks, but delegation is about letting go of controland letting others be in control They are opposing skills, and therefore ... they are at fault Only byunderstanding and appreciating their mistakes will they be able to improve.When you reprimand someone, do so face to face, and be timely andspecific about the behavior ... (vision) Both are useful andimportant We want you to love your job and be happy with it That means taining good mental health, balancing stress, handling criticism, and takingcare of yourself

Ngày tải lên: 14/08/2014, 14:21

... distribution, the current brand of computers, amount of bandwidth, and type of network topology The Staller doesn’t see the lack of technology refresh and the problems that it ... bandwidth... that the customers use, so he can “feel their pain.” As this person becomes more sophisticated, he automates his monitoring but then watches the monitoring system s output and ... administrative systems did you have to touch? 3. What improvements to your system could make it easier to disable your access when you are fired? 4. A system like Tripwire causes periodic points of filesystem

Ngày tải lên: 14/08/2014, 14:21

... Relevant a I and II only b II and III only c I and III only d I, II, and III Higher quality reports are more I Relevant II Understandable III Available a I and II only b I and III only c II and III ... II, and III b I and III only c I and II only d II only Which of the following can influence ethical behavior in organizations? I Employee personal values II Systems for measuring, monitoring and ... b I and II only c II and III only d I, II, and III A vision statement is one way to clarify an organization’s basic purpose and ideology True False Most managers follow a standard template and

Ngày tải lên: 14/11/2017, 16:04

... menopause, the glandular and fat tissues atrophy, causing breast size and elasticity to decrease, resulting in sagging ANS: D After menopause, the glandular tissue atrophies and is replaced with ... axillary lymph system, the nurse will assess the: a central, axillary, lateral, and sternal nodes b pectoral, lateral, anterior, and sternal nodes c central, lateral, pectoral, and subscapular ... Trang 1Jarvis: Physical Examination & Health Assessment, 2nd Canadian Edition Chapter 18: Breasts and Regional Lymphatic System Test Bank MULTIPLE CHOICE 1 Which of the following

Ngày tải lên: 02/03/2019, 08:34

... Injury to the Nervous System 152 7.7 Summary 154 References and Suggested Reading 155 8 Dermal and Ocular Toxicology: Toxic Effects of the Skin and Eyes 157 William R Salminen and Stephen M Roberts ... References and Suggested Reading 407 William R Kem 17.1 Poisons, Toxins, and Venoms 409 17.2 Molecular and Functional Diversity of Natural Toxins and Venoms 410 17.3 Natural Roles of Toxins and Venoms ... Roberts.—2nd ed p cm Update and expansion on a previous text entitled: Industrial toxicology: safety and health applications in the workplace Includes bibliographical references and index

Ngày tải lên: 09/08/2014, 16:20

... The linear two-compartment open model, where C1 and C2 are the concentrations in the central and peripheral compartments, respectively, and k12 and k21 are the rate constants for transfer between ... the organs andtissue groups and mixed venous blood returning to the lung to be reoxygenated Organs of entry (lung,liver), excretion (kidney, intestine, lung), and metabolism (liver), and tissue ... absorption of ionizable organic acids and bases as well as on specific and host-related factors such as lipid solubility and molecular size, the presence ofvilli and microvilli in the intestine, the

Ngày tải lên: 09/08/2014, 16:20

... light penetration and damage Inhibit microorganism growth and penetration Regulate body temperature and electrolyte homeostasis 160 DERMAL AND OCULAR TOXICOLOGY P450-mediated) and phase II enzymes ... benzocaine, and propylene glycol Chloramine, glutaraldehyde, thimerosal, and mercurials Formaldehyde and glutaraldehyde Hydroquinone, diphenylguanidine, and p-phenylenediamine Poison oak and ivy ... Earrings, coins, and watches Glues, building materials, and paints Creams, shampoos, and topical medications Betadine Rubber gloves and boots 8.3 CONTACT DERMATITIS 163 mucous membranes and the skin

Ngày tải lên: 09/08/2014, 16:20

... subtilis and A niger in the detergent industry); dusts from agricultural wastes; fungi and bacteria in moldy hay, feeds, and wood products; and dander, feces, pupae, and other residue from insect androdent ... effects, including neutrophil and macrophageactivation, T- and B-cell chemotaxis, and increased IL2and IL6 production IL2 T cells Stimulates replication of T cells, NK cells, and B cellsIL3 T cells ... glomerulonephritis in nephrotoxicity from cadmium and mercury Iodineand lithium have been linked to autoimmune thyroid disease, and chromium and gold have beenassociated with systemic lupus erythematosus-like

Ngày tải lên: 09/08/2014, 16:20

... Liver Lung Hematopoietic system Kidney (tubular cells) Mammary gland Forestomach Thyroid gland Zymbal gland Urinary bladder Skin Clitoral/Preputial gland Circulatory system Adrenal medulla 25/33 ... used in household insecticides and in pet products (e.g., flea and tick dips and sprays) Pyrethrins and pyrethrum are very rapidly metabolized and excreted from humans and have very low mammalian ... Biological Monitoring for Organophosphates and Carbamates The organophosphates and carbamates have the ability to inhibit pseudocholinesterase, red blood cell cholinesterase, and nervous system cholinesterase,

Ngày tải lên: 09/08/2014, 16:20

... Round-Up Various signs and symptomsinclude gastro-intestinal irritation and damage, as well as dysfunction in several organ systems (e.g.,lung, liver, kidney, CNS, and cardiovascular system) It has been ... even of lower toxicity and are not very persistent com-• Industrial hygiene standards, such as OSHA PELs and ACGIH TLVs and BEIs, exist for anumber of pesticides REFERENCES AND SUGGESTED READING ... herbicides, chlorophenols, and dioxins—an expanded and updated international cohort study, Am J Epidemiol 145(12): 1061–1075 (1997) Lilienfeld, D E., and M A Gallo, “ 2,4-D, 2,4,5-T, and 2,3,7,8-TCDD:

Ngày tải lên: 09/08/2014, 16:20

... mocassins, and copperheads belong to this group Many pit vipers occur in North and South America, whereas vipers occur only in Africa and Europe In general (and there are some exceptions), pit viper and ... then predatory fish and marine mammals 426 PROPERTIES AND EFFECTS OF NATURAL TOXINS AND VENOMS Ciguatoxin (Table 17.2), which activates voltage-gated sodium channels in nerve and muscle cells, ... It causes a variety of symptoms such a lethargy, tingling and numbness of the lips, hand and/or feet weakness, itching, joint pains, and gastrointestinal symptoms including diarrhea These problems

Ngày tải lên: 09/08/2014, 16:20

... andare assigned to theuser nagios andtothe groupofthe same name: linux:˜ # mkdir /usr/local /nagios /etc /nagios /var /nagios linux:˜ # chown nagios. nagios /usr/local /nagios /etc /nagios /var /nagios Younow change ... directoryofthe user nagios, /usr/ local /nagios ,the configuration directory /etc /nagios andthe directory /var /nagios , whichrecords variable datawhile Nagios is running,are setupmanually andare assigned ... information andcommandstoNagios.The Webinterface makeswidespreaduse of this possibility, whichallows theadministrator to send interactive commandstoNagios.But abackup program unknown to Nagios can also...

Ngày tải lên: 23/03/2014, 07:20