orion netflow

choice of motherboard integrated graphics card. Figure2. netfpgaSystem Framework Software Centos 4.4 and centos 4.5 centos 5.1 are recommended in the operating system. You need to configure Xilinx FPGA, so you need to install the ise9.1i software and related FPGA tools, for example, Modelsim (FPGA Logical simulation) and chipscope (On-Chip logical analysis. You also need to install netfpga base package, and Java and rpmforge Yum toolkit support before installation. P

banner and provides facility to add text to automatically configure: Login and password Transport input Output Exec-Timeout Local aaa SSH timeout and SSH Authentication-retries to minimum number Enable only SSH and SCP for access and file transfer to/from the router6. Protect forwarding plane Enables Cisco Express Forwarding (CEF) or distributed CEF on the router, when available Anti-Spoofing Blocks all IANA reserved IP address blocks Blocks private address blocks if custome

divide by 1024 and fill in the alert email box to complete the addition of the threshold template. Apply the created threshold template. On the console tab, click devices, select the host to which the template is applied, and click the topCreate graphs for this hostClick the auto-create thresholds link to apply the created threshold template. After setting, click thresholds in the left-side menu under the console tab. You can manage created alarms here. Click the threshld tab to view the tr

Tool Name:Solarwinds engineer Edition Www.solarwinds.net Recommendation reason: Some readers said: "in less than an hour, I downloaded and installed the Authorized Version of solarwinds from the website. Soon, I will be able to prepare a line usage report, and the line usage and basic response time functions are very good. In addition, the data will be saved, this allows me to view data for one week, one month, or one year." Tool Name:NetwatchKit Company Name: crannog Software Website: www.crann

passwordTransport input outputExec-timeoutLocal AAASSH timeout and ssh authentication-retries to minimum numberEnable only SSH and SCP for access and file transfer to/from the router 6. Protect Forwarding PlaneEnables Cisco Express Forwarding (CEF) or distributed CEF on the router, when availableAnti-spoofingBlocks all IANA reserved IP address blocksBlocks private address blocks if customer desiresInstalla default route to NULL 0, if a default route is not being usedConfigures TCP intercept fo

series with redundant super engine, redundant Load Balancing power supply, redundant fan, redundant system clock, redundant uplink, redundant switching back board (only for C6500 series ), high Availability of the system is achieved.　 Rich software features. C6000 software supports a wide range of protocols, including NetFlow, VTP (VLAN Trunking Protocol), VQP (VLAN Query Protocol), ISL Trunking, HSRP (Hot Standby Router Protocol) port Security, TACA

master device automatically restarts and becomes a slave device. 8. When the role is stable, the configuration priority and preemption will not take effect immediately. They will take effect only when the role is restarted. VSL Link VSL transmits data traffic and controls traffic. All traffic passing through VSL is encapsulated with a 32-byte header, including the input and output switch port indexes, VLAN numbers, COS values, and other information. Layer-2 protocols supported on VSL include ST

VPN encryption module that can be installed on site. The VPN encryption module can take over the encryption tasks of the Cisco 1700 series server guard and provide performance up to T1/E1. VPN encryption module MOD 1700-VPN) supports up to 100 remote access tunnels. Cisco IOS software feature set The Cisco Access Router supports all Cisco IOS functions, including multi-protocol routing, QoS, VPN, firewall/IDS, traditional IBM protocols, and currently used applications. Cisco 1720 and 1721 Cisco

interfaces that control the packets that are in and out of the port. ACLs apply to all routed protocols, such as IP, IPX, AppleTalk, and so on.2, NetFlow Flow calculation method: The system needs to process the number of flow per second: (The system needs to analyze the traffic size x1024x1024x1024)/(500x384x8) (280x1024x1024x1024)/(1000x384x8) = 97867.09333 280G bandwidth; sample ratio: 1000:1 384 The average packet length of packets in a class-like

1 What is OpenvswitchOpenvswitch, referred to as OvS, is a virtual switching software that is used primarily for virtual machine VM environments, as a virtual switch that supports Xen/xenserver, KVM, and VirtualBox multiple virtualization technologies.In this virtualized environment of a single machine, a virtual switch (vswitch) has two main functions: passing traffic between VM VMS and enabling communication between VMs and outside networks.The entire OvS code is written in C. The following fe

Distributed System View sensor statusin the in a distributed deployment of OSSIM systems, we often need to quickly preview the status of multiple sensors, such as IDS, vulnerability scanning,Netflow, and other subsystems. before completing the experiment, please make sure the browser can connect to Google Maps properly, and set the following method . First inDashboards→Risk Mapsthe sensor is defined in theon first entry, click "Set Indicatorsbutton,

Ossim Server and sensor communication issuesServer analysis data, all from Sensor . communication between server and sensor is important when sensor and server The following subsystems cannot display data when they cannot be contacted: Dashboards instrument panel analysis→SIEM Vulnerabilities Vulnerability Scan not working properly Profiles→Ntop detetion→ossec Server fails Deployment→alienvault→Center cannot contact Asset can initiate a scan to a resource that cannot be added to the datab

full virtual network, providing a speed comparable to memory for private virtual machine-to-virtual-machine traffic.VLAN support:Virtual machines can be bound to separate VLANs to isolate traffic between virtual machines from other physical servers, reduce network load, improve security, and simplify reconfiguration.650) this.width=650; "Width=" 278 "height=" 262 "style=" Width:auto;height:auto; "src=" http://mmbiz.qpic.cn/mmbiz/ orl2fuhmgzcpswwt214liciaoccyvzjnwt7ibgqmhnlxnyonwq23a861jbzptbyfu

a number of plugins, such as file, Elasticsearch, Redis, and so on. Each stage can also be specified in a variety of ways, such as output can be output to elasticsearch, or can be specified to stdout in the console printing. Codec is a new concept introduced by Logstash starting with version 1.3.0 (Codec from Coder/decoder two words). Prior to this, Logstash only supported plain text input and then processed it with a filter. But now, we can process different types of data during the input per

In some business systems, a large amount of data needs to be inserted into the database every minute. I am developing a NetFlow management system and receive more than several thousand data per minute in the database. Although the data volume is not large, it cannot be processed well, and the database may not be stable. If you need to insert so many SQL statements to the database every minute, many of my friends have proposed batch submission, and I a

data between different ports, they are also the destination MAC address based on data packets. The realization of a vswitch usually adopts a full hardware structure and is fast, but it does not have the ability to isolate broadcast data packets like a bridge. L3 switching technology (LAYER3SWITCHING) is an emerging network interconnection technology that integrates the advantages of the above two technologies, also known as layer-3 switching technology. If you only consider IP, it is called IP

performs Packet Exchange through hardware. Routing, such as a single mailbox, can process multiple processes at the same time.L3 devices include routers and switches. Two basic functions are available: Selecting and exchanging L2 information and reducing TTL.Catalyst Switch product with two major L3 switching implementation solutions: multilayer switching and CEFGSR performs L3 line rate switching through the switching matrix. The Catalyst series multi-layer switches implement L3 switching thro

IV ), with a large number of examples to explain the flow monitoring principles and methods, such as open source software xplico application skills,NetFlow The application in the abnormal traffic. The paper also introduces the establishment of a network log traffic monitoring network with open source Ossim security system. This book, from the perspective of cyber security personnel, shows how the network intrusion occurs when you are confronted with

The script is as follows:netflow.sh#!/bin/bash#whiletrue;do # #死循环R1 = ' cat/sys/class/net/eth0/statistics/rx_bytes ' # #获取eth0的收到流量字节数T1 = ' Cat/sys/class/net/eth0/statistics/tx_bytes ' # #获取eht0发送的流量字节数 #sleep5r2= ' cat/sys/ Class/net/eth0/statistics/rx_bytes ' # #获取5s后收到的流量字节数T2 = ' cat/sys/class/net/eth0/statistics/tx_ Bytes ' # #获取5s后发送出去的流量数 #tbps= ' expr $T 2- $T 1 ' # #相减RBPS = ' expr $R 2- $R 1 ' tkbps= ' expr $TBPS / 10240 ' # #换算为KB, as this should be divided by 1024 again in 8 and t

, such as Oracle Web Forms. As more and more applications have web interfaces, this function of NAM becomes very important because it allows administrators to monitor the enterprise's Web communications and behavior. Cisco also uses NAM to monitor IP telephony to find problems in the data tier. Although Cisco's IT department has not yet specifically assessed the benefits of using NAM, ng roughly describes the results they have achieved: "So far it has been interesting." After we installed the