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翻译中 by小眼儿
How to set up web-based network traffic monitoring system on Linux
================================================================================
When you are tasked with monitoring network traffic on the local network, you can consider many different options to do it, depending on the scale/traffic of the local network, monitoring platforms/interface, types of backend database, etc.
[ntopng][1] is an open-source (GPLv3) network traffic analyzer which provides a web interface for real-time network traffic monitoring. It runs on multiple platforms including Linux and MacOS X. ntopng comes with a simple RMON-like agent with built-in web server capability, and uses [Redis][2]-backed key-value server to store time series statistics. You can install ntopng network traffic analyzer on any designated monitoring server connected to your network, and use a web browser to access real-time traffic reports available on the server.
In this tutorial, I will describe **how to set up a web-based network traffic monitoring system on Linux by using ntopng.**
### Features of ntopng ###
- Flow-level, protocol-level real-time analysis of local network traffic.
- Domain, AS (Autonomous System), VLAN level statistics.
- Geolocation of IP addresses.
- Deep packet inspection (DPI) based service discovery (e.g., Google, Facebook).
- Historical traffic analysis (e.g., hourly, daily, weekly, monthly, yearly).
- Support for sFlow, NetFlow (v5/v9) and IPFIX through nProbe.
- Network traffic matrix (whos talking to who?).
- IPv6 support.
### Install ntopng on Linux ###
The official website offers binary packages for [Ubuntu][3] and [CentOS][4]. So if you use either platform, you can install these packages.
If you want to build the latest ntopng from [its source][5], follow the instructions below.
To build ntopng on Debian, Ubuntu or Linux Mint:
$ sudo apt-get install libpcap-dev libglib2.0-dev libgeoip-dev redis-server wget
$ tar xzf ntopng-1.0.tar.gz
$ cd ntopng-1.0/
$ ./configure
$ make geoip
$ make
In the above steps, “make geoip” will automatically download a free version of GeoIP databases with wget from maxmind.com. So make sure that your system is connected to the network.
To build ntopng on Fedora:
$ sudo yum install libpcap-devel glib2-devel GeoIP-devel
libxml2-devel redis wget
$ tar xzf ntopng-1.0.tar.gz
$ cd ntopng-1.0/
$ ./configure
$ make geoip
$ make
To install ntopng on CentOS or RHEL, first [set up EPEL repository][6], and then follow the same instructions as in [Fedora][7] above.
### Configure ntopng on Linux ###
After building ntopng, create a configuration directory for ntopng, and prepare default configuration files as follows. I assume that “192.168.1.0/24″ is the CIDR address prefix of your local network.
$ sudo mkir /etc/ntopng -p
$ sudo -e /etc/ntopng/ntopng.start
> --local-networks "192.168.1.0/24"
>
> --interface 1
$ sudo -e /etc/ntopng/ntopng.conf
> -G=/var/run/ntopng.pid
Before running ntopng, make sure to first start redis, which is a key-value store for ntopng.
To start ntopng on Debian, Ubuntu or Linux Mint:
$ sudo /etc/init.d/redis-server restart
$ sudo ./ntopng
To start ntopng on Fedora, CentOS or RHEL:
$ sudo service redis restart
$ sudo ./ntopng
By default, ntopng listens on TCP/3000 port. Verify this is the case using the command below.
$ sudo netstat -nap|grep ntopng
> tcp 0 0 0.0.0.0:3000 0.0.0.0:* LISTEN 29566/ntopng
### Monitor Network Traffic in Web-Based Interface ###
Once ntopng is successfully running, go to http://<ip-address-of-host>:3000 on your web browser to access the web interface of ntopng.
You will see the login screen of ntopng. Use the default username and password: “admin/admin” to log in.
Here are a few screenshots of ntopng in action.
Real-time visualization of top flows.
[![](http://farm4.staticflickr.com/3830/10487165303_8bf0b25668_z.jpg)][8]
Live statistics of top hosts, top protocols and top AS numbers.
[![](http://farm3.staticflickr.com/2886/10486988416_7c8770e823_z.jpg)][9]
Real time report of active flows with DPI-based automatic application/service discovery.
Historic traffic analysis.
[![](http://farm8.staticflickr.com/7379/10486995114_f0b58243a8_z.jpg)][10]
--------------------------------------------------------------------------------
via: http://xmodulo.com/2013/10/set-web-based-network-traffic-monitoring-linux.html
译者:[译者ID](https://github.com/译者ID) 校对:[校对者ID](https://github.com/校对者ID)
本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译,[Linux中国](http://linux.cn/) 荣誉推出
[1]:http://www.ntop.org/products/ntop/
[2]:http://redis.io/
[3]:http://apt.ntop.org/
[4]:http://rpm.ntop.org/
[5]:http://sourceforge.net/projects/ntop/files/ntopng/
[6]:http://xmodulo.com/2013/03/how-to-set-up-epel-repository-on-centos.html
[7]:http://xmodulo.com/go/fedora_guide
[8]:http://www.flickr.com/photos/xmodulo/10487165303/
[9]:http://www.flickr.com/photos/xmodulo/10486988416/
[10]:http://www.flickr.com/photos/xmodulo/10486995114/

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如何在Linux上配置基于Web的网络流量监控系统
================================================================================
当你在本地网络监控网络流量,根据流量大小、监控平台/接口、数据库类型等等,可以有许多不同的选择。
[ntopng][1]是一套开源遵循GPLv3协议网络流量分析解决方案提供基于web界面的实时网络流量监控。支持跨平台包括Linux和MacOS X。ntopng类似于RMON远端网络监控代理具有内置的Web服务能力使用[Redis][2]键值服务按时间序列存储统计信息。你可以在任何指定的监控服务器上安装ntopng只需使用任一web浏览器就能实时访问服务器上的流量报告了。
本教程就来介绍**如何使用ntopng在Linux上配置基于Web的网络流量监控系统**
###ntopng的特性###
- 从数据流级别与协议级别对本地网络流量进行实时分析
- 支持域、AS自制系统与VLAN级别的统计分析
- 支持IP地址地理定位
- 支持基于“服务探索”例如Google、Facebook的深度报文检测DPI
- 历史流量分析(例如分别按照小时、日、周、月、年进行分析)
- 支持sFlow、NetFlowv5/v9版以及基于nProbe的IPFIX
- 网络流量矩阵(谁正在和谁谈话?)
- 支持IPv6
###在Linux上安装ntopng
官方网页上提供了针对[Ubuntu][3]和[CentOS][4]的二进制安装包。如果你使用的恰好是以上二者其一,并且懒得用源码安装,可以直接到官网下载二进制文件包安装,并忽略这一小节下面的内容。
如果你想通过[源码][5]安装最新的ntopng请继续往下看
如果你是Debian、Ubuntu或Linux Mint执行以下命令
$ sudo apt-get install libpcap-dev libglib2.0-dev libgeoip-dev redis-server wget
$ tar xzf ntopng-1.0.tar.gz
$ cd ntopng-1.0/
$ ./configure
$ make geoip
$ make
上面的几个步骤中“make geoip”将会自动通过wget从maxmind.com下载一个免费版的GeoIP数据库因此这里最好确保你的系统能联网。
如果你是Fedora
$ sudo yum install libpcap-devel glib2-devel GeoIP-devel
libxml2-devel redis wget
$ tar xzf ntopng-1.0.tar.gz
$ cd ntopng-1.0/
$ ./configure
$ make geoip
$ make
如果你是CentOS或RHEL首先[设置EPEL repository][6],然后再执行上面和[Fedora][7]一样的命令就可以。
###在Linux上配置ntopng###
ntopng安装完毕之后接下来新建一个ntopng配置目录然后按照下列命令准备默认的配置文件。这里我假设你的本地网络地址为C类“192.168.1.0/24”。
$ sudo mkir /etc/ntopng -p
$ sudo -e /etc/ntopng/ntopng.start
> --local-networks "192.168.1.0/24"
>
> --interface 1
$ sudo -e /etc/ntopng/ntopng.conf
> -G=/var/run/ntopng.pid
在运行ntopng之前要确认先启动redis刚才不说了redis为ntopng提供键值存储嘛~
在Debian、Ubuntu和Linux Mint上这样启动
$ sudo /etc/init.d/redis-server restart
$ sudo ./ntopng
在Fedora、CentOS和RHEL上这样启动
$ sudo service redis restart
$ sudo ./ntopng
ntopng默认监听TCP的3000端口使用下列命令加以确认。
$ sudo netstat -nap|grep ntopng
> tcp 0 0 0.0.0.0:3000 0.0.0.0:* LISTEN 29566/ntopng
###基于Web界面的网络流量监控###
一旦ntopng成功运行就可以打开浏览器访问地址http://<你的主机IP地址>:3000
这时你会看到ntopng的登录界面。使用默认帐密“admin/admin”。
下面是一些截图。
top流的实时可视化图像
[![](http://farm4.staticflickr.com/3830/10487165303_8bf0b25668_z.jpg)][8]
top主机的实时统计包括top协议和top AS数量
[![](http://farm3.staticflickr.com/2886/10486988416_7c8770e823_z.jpg)][9]
基于DPI的自动程序/服务探索生成的的实时数据报告
历史流量数据分析
[![](http://farm8.staticflickr.com/7379/10486995114_f0b58243a8_z.jpg)][10]
--------------------------------------------------------------------------------
via: http://xmodulo.com/2013/10/set-web-based-network-traffic-monitoring-linux.html
译者:[Mr小眼儿](http://blog.csdn.net/tinyeyeser) 校对:[校对者ID](https://github.com/校对者ID)
本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译,[Linux中国](http://linux.cn/) 荣誉推出
[1]:http://www.ntop.org/products/ntop/
[2]:http://redis.io/
[3]:http://apt.ntop.org/
[4]:http://rpm.ntop.org/
[5]:http://sourceforge.net/projects/ntop/files/ntopng/
[6]:http://xmodulo.com/2013/03/how-to-set-up-epel-repository-on-centos.html
[7]:http://xmodulo.com/go/fedora_guide
[8]:http://www.flickr.com/photos/xmodulo/10487165303/
[9]:http://www.flickr.com/photos/xmodulo/10486988416/
[10]:http://www.flickr.com/photos/xmodulo/10486995114/