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RE: Permit root login for telnet..



Actually, the situation is slightly better because the user would need
some privileges to run a sniffer (at least in Linux). So, if nobody
could attach his own computer directly to the network where the
passwords are (or potentially could, for example due to the routing
changes) sent and all users with the appropriate privileges on already
attached computers are trusted (for example, them already know the
passwords of the users who will use telnet) there should be no problem
as long as these conditions exist. However, most probably, these
conditions would not be fulfilled in reality and the passwords sent via
telnet would be compromised.
It is much better to use SSH because it will send all information
(including passwords) in encrypted form only. Every task which can be
done with telnet can be done with SSH also.

Alexey Fadyushin
Brainbench MVP for Linux.
http://www.brainbench.com

> -----Original Message-----
> From: redhat-list-bounces redhat com [mailto:redhat-list-
> bounces redhat com] On Behalf Of Burke, Thomas G.
> Sent: Friday, August 25, 2006 11:02 PM
> To: General Red Hat Linux discussion list
> Subject: RE: Permit root login for telnet..
> 
>  Shekhar,
> 
> 	I don't remember how to turn on telnet.
> 
> 	That said, *ANY* comuter that can access the netowrk this server
> is on can be used to sniff a clear-text password sent through telnet.
I
> understand that in your specific case, this may be OK, but are you
> absolutely sure that *every* employee accessing one of these computers
> can be trusted not to set up a sniffer?  And any future employees?
> There is no point in having a server if no one's computer can access
it.
> 
> -----Original Message-----
> From: redhat-list-bounces redhat com
> [mailto:redhat-list-bounces redhat com] On Behalf Of Shekhar Dhotre
> Sent: Friday, August 25, 2006 2:53 PM
> To: General Red Hat Linux discussion list
> Subject: RE: Permit root login for telnet..
> 
> Bank of China - Shanghai .
> 
> -----Original Message-----
> From: redhat-list-bounces redhat com
> [mailto:redhat-list-bounces redhat com] On Behalf Of Steve Rieger
> Sent: Friday, August 25, 2006 1:15 PM
> To: General Red Hat Linux discussion list
> Cc: Bliss, Aaron
> Subject: Re: Permit root login for telnet..
> 
> i would like to know what bank you work for, am gonna make sure to
close
> 
> any account i have there.
> 
> 
> 
> sorry for the top post.
> 
> 
> Shekhar Dhotre wrote:
> > OK , no one has access to network room here than Coms guys . Even I
> > cannot go in as I am in Unix/Storages group. Our comm. guys are not
> > interested in checking our passwords.
> >
> > Also they have access to most of the prod switches, so they are
> trusted
> > by the business. Again not a risk .
> >
> > -----Original Message-----
> > From: Bliss, Aaron [mailto:ABliss preferredcare org]
> > Sent: Friday, August 25, 2006 9:44 AM
> > To: Shekhar Dhotre; General Red Hat Linux discussion list
> > Subject: RE: Permit root login for telnet..
> >
> > Sure, just turn on ethereal, plug into the span port on the switch.
> > Very straight forward; there are even software based packet sniffers
> > than can sniff past switches.
> >
> > Aaron
> >
> > -----Original Message-----
> > From: Shekhar Dhotre [mailto:sdhotre Cedardoc com]
> > Sent: Friday, August 25, 2006 9:25 AM
> > To: Bliss, Aaron; General Red Hat Linux discussion list
> > Subject: RE: Permit root login for telnet..
> >
> > Again that's all good . But, can you tell me how to see password of
> > other sysadmin if he is accessing system via telnet?
> >
> > -----Original Message-----
> > From: Bliss, Aaron [mailto:ABliss preferredcare org]
> > Sent: Friday, August 25, 2006 9:22 AM
> > To: Bliss, Aaron; Shekhar Dhotre; General Red Hat Linux discussion
> list
> > Subject: RE: Permit root login for telnet..
> >
> > Telnet is also vulnerable to man in the middle attacks and ssh
offers
> > post authentication; telnet does not.
> >
> > Aaron
> >
> > -----Original Message-----
> > From: redhat-list-bounces redhat com
> > [mailto:redhat-list-bounces redhat com] On Behalf Of Bliss, Aaron
> > Sent: Friday, August 25, 2006 9:13 AM
> > To: Shekhar Dhotre; General Red Hat Linux discussion list
> > Subject: RE: Permit root login for telnet..
> >
> > Telent is a clear text protocol; ssh isn't.
> >
> > -----Original Message-----
> > From: redhat-list-bounces redhat com
> > [mailto:redhat-list-bounces redhat com] On Behalf Of Shekhar Dhotre
> > Sent: Friday, August 25, 2006 9:11 AM
> > To: General Red Hat Linux discussion list
> > Subject: RE: Permit root login for telnet..
> >
> > I have used telnet before ssh came in to the market . Do you know
how
> to
> > hack telnet ? or break a root password without having physical
access
> to
> > the system ? most likely the answer will be - NO .. so what's the
big
> > deal in ssh vs. telnet ?
> >
> > -----Original Message-----
> > From: redhat-list-bounces redhat com
> > [mailto:redhat-list-bounces redhat com] On Behalf Of Greg Golin
> > Sent: Friday, August 25, 2006 2:12 AM
> > To: General Red Hat Linux discussion list
> > Subject: Re: Permit root login for telnet..
> >
> > Dear Arun,
> >
> > You do NOT want to enable root login via telnet - trust me on this
> > one. Please tell the list what you are trying to accomplish - 99.9%
> > chance is that whatever you are trying to do can, and should be done
> > via ssh.
> >
> > Kind Regards,
> > Gregory Golin
> > Systems Admin
> >
> > On 8/24/06, Arun Williams <perks_williams yahoo co in> wrote:
> >
> >> How can i enable root login for telnet....
> >>
> >>   I tried editing /etc/pam.d/login .... but no use
> >>
> >>
> >> ____________________________
> >> Regards
> >> A.Williams
> >> IN THIS WORLD FULL OF DREAMS AND IMAGINATION, LOOK FOR
> >>
> > POSSIBILITIES...
> >
> >>
> >>
> >> ---------------------------------
> >>  Here's a new way to find what you're looking for - Yahoo! Answers
> >> Send FREE SMS to your friend's mobile from Yahoo! Messenger Version
> >>
> > 8. Get it NOW
> >
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> >
> >
> 
> 
> --
> --
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