[CLUE-Cert] Re: CLUE-Cert digest, Vol 1 #200 - 3 msgs

[ross brunson]

Jeff, nc is short for the netcat command.  netcat is for "just about
anything under the sun" according to it's man page.

Personally, I find it very useful for querying the open ports on a
machine, testing a server to see if a particular service responds on a
given port, etc.

The SANS Institute has a great article about the netcat utility, you can
find it at: http://rr.sans.org/audit/netcat.php.

Hope this was helpful.

Ross

On Sat, 2002-03-09 at 12:00, clue-cert-request at clue.denver.co.us wrote:
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> Today's Topics:
> 
>   1. Re: (no subject) (Dave Anselmi)
>   2. Re: UnixReview article (Lynn Danielson)
>   3. RE: UnixReview article (Crawford Rainwater)
> 
> --__--__--
> 
> Message: 1
> Date: Fri, 08 Mar 2002 16:44:12 -0700
> From: Dave Anselmi <anselmi at americanisp.net>
> To: clue-cert at clue.denver.co.us
> Subject: Re: [CLUE-Cert] (no subject)
> Reply-To: clue-cert at clue.denver.co.us
> 
> Jef Barnhart wrote:
> 
> > Hey folks,
> >
> > I was talking about compile time optimizations here is an article showing the stuff. This is the cool stuff that you can do when you are installing distros such as LFS or Gentoo. I have tried some of the optimizations to some success.
> >
> > http://www.linuxjournal.com//article.php?sid=5886
> 
> Perhaps I should read the book they reference as I've been looking for a good description of what the optimizations do (the gcc docs are not good, IMO--but I'm not a compiler writer).  For example, why the difference between -O9 for i686
> and -O3 for i586?  How do you know whether you have a 686 or a 586?  gcc 3 has a athlon march and mcpu, but gcc 2 does not.  So for an athlon, is i686 better, or is k7?  I don't know.  This is pretty arcane, so I'm not sure anyone knows.
> 
> Also, when doing LFS, I had some stability problems with optimizations.  IIRC, it was doing -O3 on the kernel.  I think the kernel make files set -O2, and make it hard to change which is a good thing.
> 
> Dave
> 
> 
> 
> --__--__--
> 
> Message: 2
> Date: Sat, 09 Mar 2002 08:39:39 -0700
> From: Lynn Danielson <lynnd at techangle>
> To: clue-cert at clue.denver.co.us
> Subject: Re: [CLUE-Cert] UnixReview article
> Reply-To: clue-cert at clue.denver.co.us
> 
> Jef Barnhart wrote:
> 
> >Here is an article that is worth reading. It goes over the LPI 202 exam.
> >
> >http://www.unixreview.com/documents/s=2425/uni1015360112902/0203a.htm
> >
> >Since we are going over networking it may be of our best interest to make sure that we understand, "grok" the very fine points.
> >
> I agree, this looks like a good article to study from.  Nicely laid out 
> with references.
> I believe we all agreed to continue using the Sair study guide materials 
> for now, but
> let's plan to use this document as well.  I'll try to make several 
> printouts of it and
> perhaps printout a couple of the documents it references as well.
> 
> Is anyone familiar with the "nc" command which is mentioned in section 
> 2.205.2?
> 
> Lynn
> 
> 
> --__--__--
> 
> Message: 3
> From: "Crawford Rainwater" <crawford.rainwater at itec-co.com>
> To: <clue-cert at clue.denver.co.us>
> Subject: RE: [CLUE-Cert] UnixReview article
> Date: Sat, 9 Mar 2002 11:58:34 -0700
> charset="us-ascii"
> Reply-To: clue-cert at clue.denver.co.us
> 
> Just for reference, Dulaney also is the author on the
> Exam Crams for the LPI series as well.  Most likely
> when the LPI 201 and 202 stuff get printed, you will
> see this information verbatim again.
> 
> --- Crawford
> 
> > -----Original Message-----
> > From: clue-cert-admin at clue.denver.co.us
> > [mailto:clue-cert-admin at clue.denver.co.us]On Behalf Of Lynn Danielson
> > Sent: Saturday, March 09, 2002 8:40 AM
> > To: clue-cert at clue.denver.co.us
> > Subject: Re: [CLUE-Cert] UnixReview article
> > 
> > 
> > Jef Barnhart wrote:
> > 
> > >Here is an article that is worth reading. It goes over the LPI 202 exam.
> > >
> > >http://www.unixreview.com/documents/s=2425/uni1015360112902/0203a.htm
> > >
> > >Since we are going over networking it may be of our best 
> > interest to make sure that we understand, "grok" the very fine points.
> > >
> > I agree, this looks like a good article to study from.  Nicely laid out 
> > with references.
> > I believe we all agreed to continue using the Sair study guide materials 
> > for now, but
> > let's plan to use this document as well.  I'll try to make several 
> > printouts of it and
> > perhaps printout a couple of the documents it references as well.
> > 
> > Is anyone familiar with the "nc" command which is mentioned in section 
> > 2.205.2?
> > 
> > Lynn
> > 
> > _______________________________________________
> > CLUE-Cert mailing list
> > CLUE-Cert at clue.denver.co.us
> > http://clue.denver.co.us/mailman/listinfo/clue-cert
> > 
> 
> 
> 
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-- 
Ross

Ross E. Brunson
LCA,LCI,LCP,Linux+,LPIC1
MCT,MCSA,MCSE4,MCP,Inet+
ross at linuxtrainers.biz
http://www.linuxtrainers.biz