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[linux-help] Re: Protocols running?

[linux-help] Re: Protocols running?

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To: <linux-help@xxxxxxxxx>
Subject: [linux-help] Re: Protocols running?
From: "Ace" <kryste01@xxxxxxx>
Date: Thu, 1 Jun 2006 13:15:21 -0700
Reply-to: linux-help@xxxxxxxxx

OK, I'll check it out.  So to see what's currently running I use ps or top? 
----- Original Message ----- 
From: "Jonathan Hall" <flimzy@xxxxxxxxxx>
To: <linux-help@xxxxxxxxx>
Sent: Thursday, June 01, 2006 12:51 PM
Subject: [linux-help] Re: Protocols running?

> I'm not exactly sure what you're looking for... You probably mean what
> daemons are running, and what versions they are.  Although most protocols
> do have versions, the versions change very very rarely, and there are many
> programs that use the same version of the protocol, and many programs use
> multiple protocols.  Since you mentioned SSH, for instance, I'll use that
> as an example.  There are two (common) SSH protocols... SSH version 1, and
> SSH version 2.  Any modern version of OpenSSH can use both protocol
> versions (although version 2 is prefered nowdays, as its more secure).
> OpenSSH is not the only program that uses SSH, though.  There's also the
> "standard" version of SSH (which is nowdays used less frequently than
> OpenSSH), and there are also SSH servers and clients available from many
> other vendors.  Which protocols these servers and clients use will
> obviously vary by the vendor.  putty is a common SSH client for Windows.
> It supports both SSH protocols v1 and v2, as well as telnet, and probably
> rsh and other protocols as well.
> I suspect what you want to know is how to tell which daemons (servers) are
> running on your machine.  Although there is no single file that can
> possibly tell you this, one place to look is /etc/inetd.conf.  This will
> (generally) tell you which programs are set to run as services.  It is
> also possible to run a daemon in... well... daemon mode.  In which case
> it's running constantly, and won't show up in that file.  This is more
> common nowdays than it was way-back-in-the-day when computer systems had
> very little memory, so having a daemon running all the time was a waste of
> memory.  To see what programs are running at the moment (including
> daemons) something like 'top' or 'ps' are probably your best bet.
> I hope this helps.
> -- Jonathan
>> Hi,
>> Does someone know what file is used to configure protocols that run on
>> Linux
>> and how to check if they are runnning and their current version?  I am
>> running Red Hat 7.2 on an EMC Celerra network attached storage box and 
>> I'm
>> trying to see if OpenSSH and RPC are running, and their versions.
>> Thanks!
>> Adam
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