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第 104 章 NetFlow

目錄

104.1. flow-tools - collects and processes NetFlow data
104.1.1. flow-capture
104.1.2. NetFlow into MySQL with flow-tools
104.2. netams - Network Traffic Accounting and Monitoring Software
104.2.1. netams-web

查看設備是否發送Netflow包

$ sudo tcpdump -n udp port 2055
	

104.1. flow-tools - collects and processes NetFlow data

$ sudo apt-get install flow-tools
		

104.1.1. flow-capture

mkdir /opt/netflow
flow-capture -z 6 -n 143 -e 8928 -V 5 -w /opt/netflow 0/0/2055
			

104.1.2. NetFlow into MySQL with flow-tools

NetFlow into MySQL with flow-tools

創建netflow資料庫,創建flows表

CREATE TABLE `flows` (
  `FLOW_ID` int(32) NOT NULL AUTO_INCREMENT,
  `UNIX_SECS` int(32) unsigned NOT NULL default '0',
  `UNIX_NSECS` int(32) unsigned NOT NULL default '0',
  `SYSUPTIME` int(20) NOT NULL,
  `EXADDR` varchar(16) NOT NULL,
  `DPKTS` int(32) unsigned NOT NULL default '0',
  `DOCTETS` int(32) unsigned NOT NULL default '0',
  `FIRST` int(32) unsigned NOT NULL default '0',
  `LAST` int(32) unsigned NOT NULL default '0',
  `ENGINE_TYPE` int(10) NOT NULL,
  `ENGINE_ID` int(15) NOT NULL,
  `SRCADDR` varchar(16) NOT NULL default '0',
  `DSTADDR` varchar(16) NOT NULL default '0',
  `NEXTHOP` varchar(16) NOT NULL default '0',
  `INPUT` int(16) unsigned NOT NULL default '0',
  `OUTPUT` int(16) unsigned NOT NULL default '0',
  `SRCPORT` int(16) unsigned NOT NULL default '0',
  `DSTPORT` int(16) unsigned NOT NULL default '0',
  `PROT` int(8) unsigned NOT NULL default '0',
  `TOS` int(2) NOT NULL,
  `TCP_FLAGS` int(8) unsigned NOT NULL default '0',
  `SRC_MASK` int(8) unsigned NOT NULL default '0',
  `DST_MASK` int(8) unsigned NOT NULL default '0',
  `SRC_AS` int(16) unsigned NOT NULL default '0',
  `DST_AS` int(16) unsigned NOT NULL default '0',
  PRIMARY KEY (FLOW_ID)
) ENGINE=MyISAM DEFAULT CHARSET=utf8;
			

創建資料庫插入腳本

			
$ cat flow-mysql-export
#!/bin/bash
 
flow-export -f3 -u "username:password:localhost:3306:netflow:flows" < /flows/router/$1
			
			

獲取Netflow信息,執行插入任務

mkdir -p /srv/flows/router
flow-capture -w /srv/flows/router -E5G 0/0/2055 -R /srv/bin/flow-mysql-export