Get APLawrence.com by RSStcpdump ipmon snoop
What is this stuff?
If this isn't exactly what you wanted, please try our Search (there's a LOT of techy and non-techy stuff here about Linux, Unix, Mac OS X and just computers in general!):
From - Fri Oct 13 06:54:51 2000 Path: news.randori.com!newsfeeder.randori.com!codeine.org!grolier!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!sn-xit-03!sn-post-01!supernews.com!corp.supernews.com!not-for-mail From: Jeff Liebermann <jeffl@comix.santa-cruz.ca.us> Newsgroups: comp.unix.sco.misc Subject: Re: tcpdump or snoop Date: Fri, 13 Oct 2000 00:03:41 -0700 Organization: Committee To Maintain an Independent Xenix Message-ID: <n2cdusono396ook2ij3dknr36mo8nsgh4e@4ax.com> Reply-To: jeffl@comix.santa-cruz.ca.us References: <8s4lno$iui$1@nnrp1.deja.com> <8AxF5.16435$Km6.749109@news-west.usenetserver.com> X-Newsreader: Forte Agent 1.8/32.548 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Complaints-To: newsabuse@supernews.com Lines: 40 Xref: news.randori.com comp.unix.sco.misc:67151 X-Mozilla-Status: 8010 X-Mozilla-Status2: 00000000 On Fri, 13 Oct 2000 06:02:44 GMT, spcecdt@deeptht.armory.com. (John DuBois) wrote: >In article <8s4lno$iui$1@nnrp1.deja.com>, Karl Jones <kjones@dbs1.com> wrote: >>I want to watch traffic going out over a particular port - for >>debugging purposes. I got tcpdump and took a look. I think I >>understand and I don't like what I see. >> >>Seems like I have to either 1) destroy my current network card >>configuration in the interest of tcpdump or 2) add a network card and >>totally turn it over to tcpdump.
Correct. I use a 2nd ethernet card with tcpdump on OSR5.
>I use the 'ipmon' facility that is part of the ipfilter package. It works just
>fine as long as what you want to watch is traffic into and out of the machine
>you're running it on. The only time I use tcpdump is when I need to watch
>traffic on the network that *isn't* to/from the machine I'm using for
>monitoring. I think it's both a TLS and included in 5.0.6.
Monitoring and capturing data can be done various ways. All of them
basically work. Analyzing the resultant capture is the hard part. My
magic decoder ring used to be sufficient, but protocols seem to grow on
trees these days. Today, I use Ethereal:
http://www.ethereal.com
to decode the capture. It does a great job of playing mini-Carnivore and
reassembling packet streams into readable text.
Various packet sniffer packages:
http://packetstorm.securify.com/sniffers/indexdl.shtml
Packet sniffer and network wiretap FAQ
http://packetstorm.securify.com/sniffers/sniffing-faq.htm
-- Jeff Liebermann jeffl@comix.santa-cruz.ca.us 150 Felker St #D Santa Cruz CA 95060 831-421-6491 pager 831-429-1240 fax http://www.cruzio.com/~jeffl/sco/ SCO stuff
/Bofcusm/638.html copyright 1997-2004 (various authors) All Rights Reserved
Have you tried Searching this site?
Unix/Linux/Mac OS X support by phone, email or on-site: Support Rates
This is a Unix/Linux resource website. It contains technical articles about Unix, Linux and general computing related subjects, opinion, news, help files, how-to's, tutorials and more. We appreciate comments and article submissions.
Many of the products and books I review are things I purchased for my own use. Some were given to me specifically for the purpose of reviewing them. I resell or can earn commissions from the sale of some of these items. Links within these pages may be affiliate links that pay me for referring you to them. That's mostly insignificant amounts of money; whenever it is not I have made my relationship plain. I also may own stock in companies mentioned here. If you have any question, please do feel free to contact me.
Specific links that take you to pages that allow you to purchase the item I reviewed are very likely to pay me a commission. Many of the books I review were given to me by the publishers specifically for the purpose of writing a review. These gifts and referral fees do not affect my opinions; I often give bad reviews anyway.
We use Google third-party advertising companies to serve ads when you visit our website. These companies may use information (not including your name, address, email address, or telephone number) about your visits to this and other websites in order to provide advertisements about goods and services of interest to you. If you would like more information about this practice and to know your choices about not having this information used by these companies, click here.
Click here to add your comments
Don't miss responses! Subscribe to Comments by RSS or by Email
Click here to add your comments
If you want a picture to show with your comment, go get a Gravatar