LinuxQuestions.org
Go Job Hunting at the LQ Job Marketplace
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Networking
User Name
Password
Linux - Networking This forum is for any issue related to networks or networking.
Routing, network cards, OSI, etc. Anything is fair game.

Notices



Reply
 
Search this Thread
Old 07-20-2005, 11:36 AM   #1
sucram2g
Member
 
Registered: Dec 2004
Location: Uganda
Distribution: SuSE
Posts: 36

Rep: Reputation: 15
Ethereal Packet capture Help


Hi there,

How can I use ethereal (or any other tool) to capture all network traffic on my LAN.

If I run ethereal on CPU1 and want to capture traffic where source and/or destination is any computer on my LAN, so that if for example CPU2 opens a telnet session with CPU3 I would be able to sniff their packets from CPU1.


Pls help!
 
Old 07-20-2005, 12:53 PM   #2
javaroast
Member
 
Registered: Apr 2005
Posts: 130

Rep: Reputation: 18
Monitoring Port

The easiest way would be to have all hosts connected to a hub, or better yet to set up a monitoring port if you have a switch that supports that.
 
Old 07-20-2005, 01:35 PM   #3
sucram2g
Member
 
Registered: Dec 2004
Location: Uganda
Distribution: SuSE
Posts: 36

Original Poster
Rep: Reputation: 15
All computers are connected to a D-link 16 Port Hub. When I run ethereal on CPU1 it only captures pakets to or from that PC.
I have checked "Capture Packets in Promiscuous Mode", but I only get my own. I tested this by going to another computer and pinging my computer, which showed the requests and replies, but when I ping another computer, I don't see the icmp protocol.
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
how do i read the data in the packet that i have captured after packet capture? gajaykrishnan Programming 23 04-19-2006 06:09 AM
[ethereal] why 50% packet are go missing dalmassoc Linux - Networking 2 11-30-2005 04:05 AM
ethereal + packet capture reading guides ? kurrupt Linux - Networking 1 10-24-2005 01:34 PM
captured packet in ethereal anubhuti_k Linux - Networking 1 01-14-2005 07:31 AM
how to test packet collision using ethereal abirami Linux - Networking 0 09-20-2004 08:17 AM


All times are GMT -5. The time now is 12:21 AM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
identi.ca: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration