How to securely collect Cisco router IP traffic

I would like to introduce how to obtain the IP traffic of a Cisco router. Many people may not know how to retrieve the IP address of a Cisco router. It does not matter. After reading this article, you will certainly have a lot of GAINS, I hope this article will teach you more things. A router is a bridge of a computer network and a core device connecting to an IP network. It can not only connect to different networks, but also select data transmission paths and block unauthorized access. Router configuration is not easy for beginners. Take the Cisco 2600 router as an example to introduce the knowledge of the Cisco router IP address.

1. Connection

1. Use a serial cable provided by the Cisco 2600 router to connect the Console port of the router to the serial port of a computer.

2. after Windows 2000 is started, perform the following operations: "Start> program> attachment> communication> Super Terminal". Therefore, you must enter the Super Terminal name in the name column of the "connection description" dialog box, click "OK ".

3. In the "connect to" form, select "COM1" in the "connect to use" column, and click OK. In the pop-up "COM1 properties" form, you can easily collect IP traffic without any programming. For security reasons, you can also restrict access to the server's clients ..

2. obtain IP traffic of a cisco Router

After the configuration is complete, turn on the vro power and the startup information of the vro appears. In this case, you can operate the vro as you would on the terminal. When using a cisco router as an Internet Router, the IP address filtering function of a Cisco router is generally used to count IP traffic. The method is to add the ip accounting output-packets command at each entrance of the cisco router. The cisco router automatically counts the IP traffic of these ports. You can use the show ip account (snmp) or telnet terminal simulation method to obtain IP traffic. In Cisco IOS v.11 and later versions, the http Server feature is provided. Users can manage cisco routers on the WWW page and can easily collect IP traffic without any programming. For security reasons, you can also restrict access to the server's clients. The method is as follows:

◆ Access-list 10 permit 202.111_2.5
◆ Ip http server
◆ Ip http access-list 10

In client 202.112.162.5, use the web download tool wget to periodically collect and clear IP traffic. The method is as follows:
◆ # Read IP traffic and store it in the outpu-packets webpage File
◆ Wget -- http-user = admin -- http-passwd = cisco
◆ Http: // cisco/exec/show/ip/accounting/output-packets
◆ # Clear collected IP traffic
◆ Wget -- http-user = admin -- http-passwd = cisco
◆ Http: // cisco/exec // clear/ip/accounting/CR
◆ In the webpage outpu-packets, read the identifier <pre>,
◆ </Pre> to calculate IP traffic.
◆ Source Destination Packets Bytes
◆ 202.112.175.7 202.205.10.30 3 592
◆ 202.112.175.175 203.207.176.15 17 17 2000
◆ 202.1110422 202.96. 44.134 1 40
◆ 202.112.164.5 202.103.134.58 1 40
◆ 202.112.175.201 202.114.98.12 3 430
◆ 202.112134.151 202.96. 49.1 6 279

The above content is just some common Cisco router IP methods. To fully master the router configuration, you also need to have a solid knowledge and rich practical experience. Beginners can use simulation software to learn configurations. For example, the RouterSim introduced in "create your own" simulated routing exchange platform "in section 13th of" "is a good simulation software, if you want to try it, you can download it for use.