Use the Wireshark capture software to capture the Telnet password

Source: Internet
Author: User

Use wireshark to grab a password for Telnet login

First open the GNS3 to create a simple topology diagram, the interface is labeled an IP address to prevent mixing

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M00/58/E0/wKioL1S_ad6CCKPXAACFmL00PIc681.jpg "title=" Picture 1.png "alt=" Wkiol1s_ad6cckpxaacfml00pic681.jpg "/>

give two routers a IP address,Ping The connectivity  

650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/58/E3/wKiom1S_ag2w1ErZAAK3pZi7g6A489.jpg "style=" float: none; "title=" Image 3.png "alt=" Wkiom1s_ag2w1erzaak3pzi7g6a489.jpg "/>

650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M01/58/E0/wKioL1S_auPQPdX2AAKweImkgjQ133.jpg "style=" float: none; "title=" Image 2.png "alt=" Wkiol1s_aupqpdx2aakweimkgjq133.jpg "/>

Upon request in R1 to set the telnet login password and enter the privileged mode password, need to remember the password, this password is logged on the R2

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M02/58/E0/wKioL1S_axaTBPctAALOS5E6uC8231.jpg "title=" Picture 4.png "alt=" Wkiol1s_axatbpctaalos5e6uc8231.jpg "/>

Open after Setup is complete Wireshark Grab the package software, open the way is to click on the topology map to grab the packet of the line, select the port to grab the packet

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M00/58/E0/wKioL1S_az7Dk_r-AADVT4R7Emw112.jpg "title=" Picture 5.png "alt=" Wkiol1s_az7dk_r-aadvt4r7emw112.jpg "/>

so you can open it automatically . wireshark Select telnet to grab the packet

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M01/58/E0/wKioL1S_a3mzA_tnAADtN3eNFUg206.jpg "title=" Picture 6.png "alt=" Wkiol1s_a3mza_tnaadtn3enfug206.jpg "/>

If you can't open it automatically Wireshark Please note the following configuration

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M02/58/E3/wKiom1S_ayKCN_m9AAJoYMoNywM704.jpg "title=" Picture 7.png "alt=" Wkiom1s_aykcn_m9aajoymonywm704.jpg "/>

Open the CRT login R2 and then use Telnet to log on R2 R1

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M02/58/E0/wKioL1S_bBjQKQmSAACBogoIqdA819.jpg "title=" Picture 8.png "alt=" Wkiol1s_bbjqkqmsaacbogoiqda819.jpg "/>

Open wireshark Check your password,R2 start here with telnet into R1

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M02/58/E3/wKiom1S_a2jAhAgSAAjgucpFeUk164.jpg "title=" Picture 9.png "alt=" Wkiom1s_a2jahagsaajgucpfeuk164.jpg "/>

look down, look. Data packet , prompting for password to enter user mode

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M00/58/E3/wKiom1S_bCHgK8_hAAE8S8YdfO4520.jpg "title=" Picture 10.png "alt=" Wkiom1s_bchgk8_haae8s8ydfo4520.jpg "/>

then look down to see only data packet, you can see all the passwords. This is the first password "character"

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M01/58/E0/wKioL1S_bFfjAXQFAAWUUMN6aGM960.jpg "title=" Picture 11.png "alt=" Wkiol1s_bffjaxqfaawuumn6agm960.jpg "/>

Here is a hint of entering a password into privileged mode

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M01/58/E0/wKioL1S_bRLSfR44AAXbeUw3bGk497.jpg "title=" Image 12.png "alt=" wkiol1s_brlsfr44aaxbeuw3bgk497.jpg "/> look down on the data packet to see the telnet password, this is the first password , keep looking down and you'll see all the passwords.

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M02/58/E1/wKioL1S_bXjBrFmBAAWISyZtNqg871.jpg "title=" Picture 13.png "alt=" Wkiol1s_bxjbrfmbaawisyztnqg871.jpg "/>


This article is from the "My World" blog, please be sure to keep this source http://zhang2015.blog.51cto.com/9735109/1606715

Use the Wireshark capture software to capture the Telnet password

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.