LinuxQuestions.org
Visit Jeremy's Blog.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Software
User Name
Password
Linux - Software This forum is for Software issues.
Having a problem installing a new program? Want to know which application is best for the job? Post your question in this forum.

Notices

Reply
 
Search this Thread
Old 09-02-2010, 02:57 PM   #1
raypsi
Member
 
Registered: Jun 2007
Distribution: ubuntu
Posts: 47

Rep: Reputation: 15
tcpdump says no device found?


I looked and have tcpdump installed on ubuntu 10.04 lts I can do a tcpdump --help and it gives the commands.
I get no device found when I do tcpdump from the terminal window.

my Ubuntu is having trouble looking up domains it just sits there and hangs looking up google.com

I'm on a ATT 3mb DSL dry line running an asus netbook and a biostar via mobo desktop they both have trouble looking up domains right out of the DSL modem.

I would try to set the DNS in ubuntu but I don't know how to do that without knowing the gateway and such. I have to get the IP of the computer, the netmask, the gateway, and the DNS for the manual setup.
 
Old 09-02-2010, 09:47 PM   #2
quanta
Member
 
Registered: Aug 2007
Location: Vietnam
Distribution: RedHat based, Debian based, Slackware, Gentoo
Posts: 724

Rep: Reputation: 100Reputation: 100
Quote:
Originally Posted by raypsi View Post
I looked and have tcpdump installed on ubuntu 10.04 lts I can do a tcpdump --help and it gives the commands.
I get no device found when I do tcpdump from the terminal window.
What exactly command did you use?
Quote:
Originally Posted by raypsi View Post
my Ubuntu is having trouble looking up domains it just sits there and hangs looking up google.com

I'm on a ATT 3mb DSL dry line running an asus netbook and a biostar via mobo desktop they both have trouble looking up domains right out of the DSL modem.

I would try to set the DNS in ubuntu but I don't know how to do that without knowing the gateway and such. I have to get the IP of the computer, the netmask, the gateway, and the DNS for the manual setup.
echo "nameserver 8.8.8.8" >> /etc/resolv.conf
echo "nameserver 8.8.4.4" >> /etc/resolv.conf
 
Old 09-02-2010, 10:03 PM   #3
ghostdog74
Senior Member
 
Registered: Aug 2006
Posts: 2,695
Blog Entries: 5

Rep: Reputation: 241Reputation: 241Reputation: 241
how many interfaces do you have. there's a switch in tcpdump to specify interfaces. check the man page.
 
Old 09-03-2010, 04:35 AM   #4
raypsi
Member
 
Registered: Jun 2007
Distribution: ubuntu
Posts: 47

Original Poster
Rep: Reputation: 15
Quote:
Originally Posted by ghostdog74 View Post
how many interfaces do you have. there's a switch in tcpdump to specify interfaces. check the man page.
Yes had to do: sudo tcpdump -i eth0

I didn't see the interface switch -i the first time around. It was right there in tcpdump --help

Thanks

Last edited by raypsi; 09-03-2010 at 04:38 AM.
 
  


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
[SOLVED] tcpdump - no suitable device found LorenCarter Linux - Networking 5 06-07-2010 10:43 AM
ALI-M5451 Laptop Soundcard >>No such device>>Device Not Found>No Pipeline Balarabay1 Linux - Hardware 1 02-21-2006 12:54 PM
UL 1.0 GRUB: could not find device for /boot: not found or not a block device cma Linux - General 4 12-12-2005 03:35 AM
no device found tcpdump rid00z Linux - Software 1 09-22-2003 12:23 AM
found svrloc throu tcpdump what does that mean? saavik Linux - Networking 1 06-10-2002 12:26 PM


All times are GMT -5. The time now is 12:07 PM.

Main Menu
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