...I R E A S O N I N G S N M P L I B R A R Y iReasoning SNMP API User Guide Copyright © 2002-2014 iDeskCentric Inc., All Rights Reserved. The information contained herein is the property of iDeskCentric Inc. This document may not be copied, reproduced, reduced to any electronic medium or machine readable form, or otherwise duplicated, and the information herein may not be used, disseminated or otherwise disclosed, except with the prior written consent of iDeskCentric Inc. I R E A S O N I N G S N M P L I B R A R Y Table of Contents INTRODUCTION....................................................................................................................................................................................................................1 About this document ................................................................................................................................................................................................................1 Target Audience .......................................................................................................................................................................................................................1 INSTALLATION .....................................................................................................................................................................................................................2 Requirements..............
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...SNMP Robert Dow CIS 516 Enterprise Network Management Professor Mtshali Strayer University 28 October 2012 Opening Statement In this study we will examine the use of Simple Network Management Protocol and determine its viability within networking fields. The overall question is if we can make devices that speak different computer languages talk on the same interface. I will attempt to prove that through the use of MIB’s, networking devices can communicate through a common network management protocol and effectively relay system specific to a graphical user interface (GUI). This will hopefully display a full load of detailed information about all the devices on the network on one common interface. Network Architecture First, I needed to create a network architecture that would show how the communication channels could be established across operating system languages and through different network devices. In my first test, I decided to create a flat network model using a simple switch interconnecting cross platform computers. This seemed to simple for me, so I decided to add a little more depth. I added a Windows Server system to the mix, controlling authentication, Dynamic Host Configuration Protocol (DHCP) and Domain Name Service (DNS) resolution. For the backbone of the system is procured a Cisco 2900 XL layer 3 switch to connect all the device through. Then I added a Linksys E1200 router to provide World Wide...
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...Homework Assignment NETW 420 February 15, 2014 Professor Viviane Ruiz SNMP stands for Simple Network Management Protocol. SNMP is one example of a management protocol. This is an application layer protocol that helps in administrating and supervising network assets across the web. The SNMP has three key components. They are the managed devices, the agents and the network management system. Show below is the relationship between the managed devices, agents, and NMSs components (Simple Network Management Protocol, 2012). Managed devices are network nodes that contain the SNMP agent and are connected to the network that is managed. They will gather and store information then they make the information available to the Network Management System by using SNMP. These devices are routers, servers, switches, computers, printers and many other devices. The agent is a network management software module that is installed on a managed device. The agent is knowledgeable of the management information and can make it compatible to the SNMP. The Network Management System implements the applications that will conduct the monitoring and controlling of the managed devices. There is usually more than one NMS on a managed network (Simple Network Management Protocol, 2012). SNMP uses four basic commands while it monitors and controls a managed device. These four commands are read, write, trap, and the traversal operations. The Network Management System uses the read command to monitor...
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...planning. A large number of protocols, including SNMP, CMIP, common information model and Java Management Extensions, govern this field and exist for its support. Remote Monitoring (RMON) is a standard monitoring specification that enables various network monitors and console systems to exchange network-monitoring data. RMON provides network administrators with more freedom in selecting network-monitoring probes and consoles with features that meet their particular networking needs. Remote Monitoring has been helpful bringing company closer and closer all over the world, this standard is just not for a LAN network. Many company have their employees work from home and can monitor their system from any location that have a Wi-Fi service. RMON has the capabilities to delegate management functionality, by using SNMP. There are several entities that make up a network management system: managers, agents, MIBs, RMON, probes, MOs, and real devices. An RMON probe can sometimes be management appliance software or could be in the device that is managed. They can also reside near monitored network elements. The probe analyzes RMON information such as traffic and alarms. RMON probes delegate certain tasks such as collecting statistics, periodic polling, subscribing to certain notifications, and generating threshold-crossing alerts through specific configuration of MIBs. Some advantages of utilizing RMON probes is that they reduce SNMP traffic as well as reduces the processing load of...
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.... . Net-SNMP CLI 11 Probing a device: SNMP WALKs . . . . . . . . . . . . . . . . . . 11 Polling Individual OIDs: SNMP GETs . . . . . . . . . . . . . . . 13 Net-SNMP CLI Tool Options . . . . . . . . . . . . . . . . . . . . 13 4 Polling Applications 15 4.1 Simple Polling with PERL . . . . . . . . . . . . . . . . . . . . . . 15 4.2 The Net-SNMP PERL Module . . . . . . . . . . . . . . . . . . . 16 5 Trap Handlers 19 5.1 The Trap Daemon Configuration . . . . . . . . . . . . . . . . . . 19 5.2 A Simple Trap Handler . . . . . . . . . . . . . . . . . . . . . . . 20 5.3 Starting the Trap Daemon . . . . . . . . . . . . . . . . . . . . . . 21 6 The 6.1 6.2 6.3 6.4 Net-SNMP C API SNMP Internals . . . . . . . . Watching SNMP on the wire A simple example . . . . . . . Closing Thoughts . . . . . . . 23 23 24 27 29 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Chapter 1 Introduction to SNMP 1.1 General Overview Simple Network Management Protocol is a simple method of interacting with networked devices. The standard was defined by IETF RFC 1157 in May of 1990. SNMP can often seem quite confusing and overly complicated, its available APIs tend to put alot of wrapping around what should be very simple. The available books on the topic tend to only complicate the subject, not demystify it. SNMP is extremely...
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...software * Content filtering * Spying * To keep machines behind it anonymous (mainly for security). * To speed up access to resources (using caching). Web proxies are commonly used to cache web pages from a web server. * To apply access policy to network services or content, e.g. to block undesired sites. * To log / audit usage, i.e. to provide company employee Internet usage reporting. * To bypass security/ parental controls. * To scan transmitted content for malware before delivery. * To scan outbound content, e.g., for data leak protection. * To circumvent regional restrictions. 2. What are the functions of a Simple Network Management Protocol (SNMP) agent. The SNMP extension agent functions define the interface between the SNMP service and the third-party SNMP extension agent DLLs. *...
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...from there to the DNS server, which then forwards the user to that specific address. For users who are not mathematically inclined, it is easier to remember and input the name of a computer than it is to remember and input all of the numbers and decimals in an IP address. Also, there is no reason for DNS to rely on TCp because usually, only a single data packet is used to send messages. So instead, it uses the User Datagram Protocol (UDP) Transport Layer. Reference: Chapter 5, Page 228 ((22 of 54)) ((Note to readers: The above answer has already been used verbatem -word for word. Please put the above answer in your own words.)) --------------------------------------------- Discussion Question 2 Due Date: Day 4 [Main] forum. SNMP is a protocol for network...
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...defense: the border router. Although a lot of people may think that routers don’t need to be protect, they are completely wrong. A lot of secure problems appear all time against this kind of device and most of them are vulnerable. Some information about some common security problems found on Cisco Routers, can be read on the text “Exploiting Cisco Routers”, available at: http://www.securityfocus.com/infocus/1734 In this article I will give you 8 steps, easy to follow, to minimize your Cisco router exposure by turning off some unused services, applying some access control and applying some security options available on that. 12345678- Control Access to your router; Restrict telnet access to it; Block Spoof/Malicious packets; Restrict SNMP; Encrypt all passwords; Disable all unused services; Add some security options; Log everything; 1- Control Access to your router The first thing to do is apply some rules to restrict all external access to some ports of the router. You can block all ports, but it is not always necessary. These commands bellow will protect your router against some reconnaissance attacks and, obviously, will restrict access to these ports: access-list 110 deny tcp any host $yourRouterIP eq 7 access-list 110 deny tcp any host $yourRouterIP eq 9 access-list 110 deny tcp any host $yourRouterIP eq 13 access-list 110 deny tcp any host $yourRouterIP eq 19 access-list 110 deny tcp any host $yourRouterIP eq 23 access-list 110 deny tcp any host $yourRouterIP...
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...Patton-Fuller Community Hospital Network Project Harold Copeland CMGT/554 11/11/13 Dean Mcintyre Company Overview Patton-Fuller Community Hospital is a community hospital that provides healthcare services designed to meet the needs of patients at every stage of life. The hospital was originally founded in 1975. Patton-Fuller Community Hospital has been an important part of the community since its opening. Patton-Fuller Community Hospital is located on the corner of 61st. Street and Jump Street (Patton-Fuller Community Hospital, 2013). Patton-Fuller Community Hospital has provided quality healthcare services for the entire family since its opening while keeping its patients information and data secure even in this current digital age. Patton-Fuller’s IT departments strives to provide the healthcare facility with the most stable, secure, and fast network possible. Data Transmission Patton-Fuller’s I.T. data center consist of a HIS system computer, a Windows Exchange Server, an Internet Server, data center workstations and a RAS Server. The hospital HIS computer system is composed of an IBM Series 29EC mainframe. This mainframe is currently utilizing Linux for its operating system. The IBM 29EC mainframe contains 18 processors and 32 gigabytes of memory. This system is using Advanced Encryption Standard (AES) for its security. The IBM 29EC is connected to a 10 Terabyte network attached storage (NAS) by a 4 gigabyte fiber link (Patton-Fuller Community Hospital...
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...Windows 7 Commonly Used Services Browser Maintains an updated list of computers on the network and supplies this list to computers designated as browsers. If this service is stopped, this list will not be updated or maintained. If this service is disabled, any services that explicitly depend on it will fail to start. bthserv The Bluetooth service supports discovery and association of remote Bluetooth devices. Stopping or disabling this service may cause already installed Bluetooth devices to fail to operate properly and prevent new devices from being discovered or associated. Dhcp Registers and updates IP addresses and DNS records for this computer. If this service is stopped, this computer will not receive dynamic IP addresses and DNS updates. If this service is disabled, any services that explicitly depend on it will fail to start. Dnscache The DNS Client service (dnscache) caches Domain Name System (DNS) names and registers the full computer name for this computer. If the service is stopped, DNS names will continue to be resolved. However, the results of DNS name queries will not be cached and the computer's name will not be registered. If the service is disabled, any services that explicitly depend on it will fail to start. eventlog This service manages events and event logs. It supports logging events, querying events, subscribing to events, archiving event logs, and managing event metadata. It can display events in both XML and plain text format. Stopping...
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...Applications Protocol Paper-VoIP security NTC/406 Explains how the application layer manages distributed applications and their protocols Here in Afghanistan we use Voice over Internet Protocol (VoIP) for our NIPR, SIPR and CENTRIX voice capabilities. We utilize the Cisco MCS 7835 Media Convergence Server which allows for any user with internet access to create and receive calls of varies types.Because of this method of communications, it too is also targeted for attacks by unauthorized access, sniffing, and data capturing techniques. To reduce the exposure of this transmission, policies and protocol should be implemented. VoIP is a protocol with the means of communication that originates from local area network domain and provides the essential functions for audio and visual of live streaming transmission. To ensure reliability and security of these connections, information technology personal will need to address the known issues related to this domain. The Local Area Network is one of seven domains situated within the network and provides the crucial link to interior and exterior connections for accessing information. To address these security issues, we must first consider the known threat, risk, and vulnerabilities associated with this domain and connection type. Voice over internet protocol transfers packets over the network by utilizing the Public Branch Exchange (PBX) and Public Switch Telephone Network or PSTN. This function...
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...designing a healthcare network Non-stop Network Network bandwidth and QoS (Quality of Service) Data capacity Network bandwidth and cost of LAN devices QoS (Quality of Service) Redundancy and proactive measures to overcome network failures Core switch redundancy Comparison of redundancy of communication Loop protection Secure and Reliable Network Security Importance of security: both physical and human factors Threats to network security Network authentication External network (Internet) connection Inter-regional cooperative healthcare network Effective use of Wireless LAN Security in Wireless LAN Install and operation of Wireless LAN Ease of Operation Critical issues for network operation SNMP (Simple Network Management Protocol) Measures against system failures; device failures, incorrect wiring Use of SNMP IPv6 Network Configuration Example Network configuration for hospitals with fewer than 100 beds Network configuration for hospitals with more than 100 and fewer than 200 beds Network configuration for hospitals with more than 200 beds (i) Network configuration for hospitals with more than 200 beds (ii) 3 4 4 5 7 7 7 8 9 10 10 11 12 13 13 13 14 15 19 20 21 21 22 23 23 24 24 25 26 27 28 30 32 34 2 | Healthcare Network Solution Healthcare Network Solution | Introduction At the end of the 20th century, computers and the technology field overall began embracing the idea of being ‘open.’ With this, we saw the development of new interoperable platforms and the advent of more...
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...Basic Components of Network Management Systems Matthew D. Miller DeVry University A network management system is a system that is made up of hardware and software, whose job it is to manage the communications, software, and computer hardware of a network (Hill Associates, 2008). There are many different tools and components that help to make up a network management system. Some of these tools include trouble ticket systems, help desk systems, alarm correlation, maintenance tools, etc (Hill Associates, 2008). Along with all these tools there are four basic components that a network management system consists of. They are the agent, network management station, network management protocol, and the management information (Hill Associates, 2008). As mentioned before a network management system has many tools available to use. Trouble ticket systems are used to manage and keep track of any and all issues relating to the network (OTRS Team, 2012). A very useful feature of trouble ticket systems is that they save and archive the tickets with all pertinent information like who was involved, the problem and any notes or solutions (OTRS Team, 2012). In case a particular event occurs again the help desk team has a reference to look to for assistance. With any kind of machine or system, maintenance must take place in order for it to perform to its full potential. Software and hardware updates are essential for the smooth running of a network (TWD & Associates, Inc., 2012)...
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...zero disruption to the current business operations * Assess current security flaws and provide solutions to eliminate flaws * Quality assurance-monitor the status of remote systems and determine feasible success /failure toward seamless migration and updated network system Project scope * The scope of the project is to migrate the existing data center to a new location; to assess and eliminate current security flaws in the network * Upgrade and improve redundancy of WAN via T1 & ISDN backup connectivity * The data center move will include 2 large UPS, 4 RS/6000 AIX application servers, 10 virtualized servers and 20 PC servers * Any network performance problems with existing applications will be addressed * SNMP management system should be configured to detect and report status of the remote...
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...Christy Williams University of Phoenix- Profressor Sims Wk 6 Assignment Router & Switch Conf. "Let’s go through the basic steps of setting up a Cisco router to provide Internet access to a small network. I’ll assume you have some basic IOS knowledge, including how to log on and how to save and clear configurations. I’ll also assume that you have a solid understanding of networking, including what Network Address Translation (NAT) is. I won’t cover items such as setting up Secure Shell (SSH) access and hardening access lists. You can expand into those areas as you feel comfortable and want to experiment more. What You’ll Need You need a Cisco router with at least two Ethernet interfaces. An 806, 836, 851, or 871 is ideal for a home or small office setup—in fact, that’s what those models are geared towards. You can buy an 851 for a few hundred dollars from various online retailers. However, a 2610 works just as well, and you might have one sitting in the equipment bin at your office that you can ask to borrow. Your router should have IOS 12.2 or later. This article is based on a Cisco 851W with IOS 12.4, including the IOS firewall feature set. You also need a Cisco console cable (sometimes called a rollover cable). One end has an eight-position, eight-conductor modular jack to connect to the router; the other end has a DB-9 serial connector. In recent years...
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