Linux Terminal Server Project

Roy Souther | 1 Nov 2005 01:00

Terminal printers with local ppf not local cups.

I have been looking at running printers from the terminals. I see a lot of people setting up cups on the terminals to run a cups server. I chose to use ppf on my terminals because it is very small and lets me set the desktop server as the cups server. I think cups is overkill for the terminals. ppf is doing a great job on the terminals and it is very small.

Royce Souther
www.SiliconTao.com
Let Open Source help your business move beyond.

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Cory Oldford | 1 Nov 2005 06:03

Re: LocalMedia, why Samba, why not sshfs?

I did and it was easy as pie with public key authentication and some custom scripts. If I recall there are some
limitations dealing with obtaining filesystem statistics like freespace.

Cory Oldford
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I am setting up a network with about 100 terminals in a school of about
400 students. I am going to try to setup the terminals to use USB memory
sticks as a local media. As I read the LocalMedia page
http://wiki.ltsp.org/twiki/bin/view/Ltsp/LocalMedia and how it describes
using Samba I have to ask the question, why Samba and why not sshfs?

I think Samba could cause some security problems that would be solved by
sshfs. Has anyone done LocalMeda using sshfs yet? How well does it work
with terminals?
I have used sshfs before but not with terminals. I like it and I think
it is worth a look.

Royce Souther
www.SiliconTao.com
Let Open Source help your business move beyond.

For security this message is digitally authenticated by GnuPG.

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 TRANSITIONAL//EN">
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  <META HTTP-EQUIV=3D"Content-Type" CONTENT=3D"text/html; CHARSET=3DUTF-8">
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</HEAD>
<BODY>
I am setting up a network with about 100 terminals in a school of about 400=
 students. I am going to try to setup the terminals to use USB memory stick=
s as a local media. As I read the LocalMedia page <A HREF=3D"http://wiki.lt=
sp.org/twiki/bin/view/Ltsp/LocalMedia">http://wiki.ltsp.org/twiki/bin/view/=
Ltsp/LocalMedia</A> and how it describes using Samba I have to ask the ques=
tion, why Samba and why not sshfs?<BR>
<BR>
I think Samba could cause some security problems that would be solved by ss=
hfs. Has anyone done LocalMeda using sshfs yet? How well does it work with =
terminals?<BR>
I have used sshfs before but not with terminals. I like it and I think it i=
s worth a look.<BR>
<TABLE CELLSPACING=3D"0" CELLPADDING=3D"0" WIDTH=3D"100%">
<TR>
<TD>
<BR>
<TABLE CELLSPACING=3D"0" CELLPADDING=3D"0" WIDTH=3D"100%">
<TR>
<TD>
<U><A HREF=3D"mailto:roy@...">Royce Souther</A></U><BR>
<U><A HREF=3D"http://www.SiliconTao.com">www.SiliconTao.com</A></U><BR>
Let Open Source help your business move beyond.<BR>
<BR>
For security this message is digitally authenticated by <U><A HREF=3D"http:=
//www.gnupg.org">GnuPG</A></U>.
</TD>
</TR>
</TABLE>
<BR>
<BR>
<BR>
</TD>
</TR>
</TABLE>
</BODY>
</HTML>

--=-vjjuWM16jnZ39fdqZhGy--

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Cory Oldford | 1 Nov 2005 06:14

Re: LocalMedia, why Samba, why not sshfs?

I use sshfs with public key authentication but am going to look at the new ltspfs as an alternative. As far as I
recall sshfs had some issues with filesystem statistics(freespace as an example). As for your question
regarding printing, cups is not on the client side. Read the printing docs for information on how this
works under ltsp.

Cory Oldford
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I am setting up a network with about 100 terminals in a school of about
400 students. I am going to try to setup the terminals to use USB memory
sticks as a local media. As I read the LocalMedia page
http://wiki.ltsp.org/twiki/bin/view/Ltsp/LocalMedia and how it describes
using Samba I have to ask the question, why Samba and why not sshfs?

I think Samba could cause some security problems that would be solved by
sshfs. Has anyone done LocalMeda using sshfs yet? How well does it work
with terminals?
I have used sshfs before but not with terminals. I like it and I think
it is worth a look.

Royce Souther
www.SiliconTao.com
Let Open Source help your business move beyond.

For security this message is digitally authenticated by GnuPG.

--=-vjjuWM16jnZ39fdqZhGy
Content-Type: text/html; charset=utf-8
Content-Transfer-Encoding: quoted-printable

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 TRANSITIONAL//EN">
<HTML>
<HEAD>
  <META HTTP-EQUIV=3D"Content-Type" CONTENT=3D"text/html; CHARSET=3DUTF-8">
  <META NAME=3D"GENERATOR" CONTENT=3D"GtkHTML/3.2.5">
</HEAD>
<BODY>
I am setting up a network with about 100 terminals in a school of about 400=
 students. I am going to try to setup the terminals to use USB memory stick=
s as a local media. As I read the LocalMedia page <A HREF=3D"http://wiki.lt=
sp.org/twiki/bin/view/Ltsp/LocalMedia">http://wiki.ltsp.org/twiki/bin/view/=
Ltsp/LocalMedia</A> and how it describes using Samba I have to ask the ques=
tion, why Samba and why not sshfs?<BR>
<BR>
I think Samba could cause some security problems that would be solved by ss=
hfs. Has anyone done LocalMeda using sshfs yet? How well does it work with =
terminals?<BR>
I have used sshfs before but not with terminals. I like it and I think it i=
s worth a look.<BR>
<TABLE CELLSPACING=3D"0" CELLPADDING=3D"0" WIDTH=3D"100%">
<TR>
<TD>
<BR>
<TABLE CELLSPACING=3D"0" CELLPADDING=3D"0" WIDTH=3D"100%">
<TR>
<TD>
<U><A HREF=3D"mailto:roy@...">Royce Souther</A></U><BR>
<U><A HREF=3D"http://www.SiliconTao.com">www.SiliconTao.com</A></U><BR>
Let Open Source help your business move beyond.<BR>
<BR>
For security this message is digitally authenticated by <U><A HREF=3D"http:=
//www.gnupg.org">GnuPG</A></U>.
</TD>
</TR>
</TABLE>
<BR>
<BR>
<BR>
</TD>
</TR>
</TABLE>
</BODY>
</HTML>

--=-vjjuWM16jnZ39fdqZhGy--

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adriano | 1 Nov 2005 07:00

Adriano Barata Prado esta de ferias.


Estarei ausente do escritório a partir de  01/11/2005 e não retornará até
01/12/2005.

Responderei à sua mensagem quando retornar.

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Mikko Kokkonen | 1 Nov 2005 07:57

Re: LocalMedia, why Samba, why not sshfs?

> I think Samba could cause some security problems that would be  
> solved by sshfs. Has anyone done LocalMeda using sshfs yet? How  
> well does it work with terminals?
> I have used sshfs before but not with terminals. I like it and I  
> think it is worth a look.
I tried sshfs and it worked quite well. It was easy to set up public  
key etc. I created public key only for root so it is easy to users  
because then they are not required to do anything. KDM login scripts  
mounted local media to user's desktop. Only problem I run into was  
that in our system home folders are mounted by NFS with root_squash  
so users had to have home directory to all executable (chmod a+x ~)  
and that was not a very nice solution.
Now I am testing ltspfs and it seems to be better solution because  
now users can mount folders by themselfs.

--
Mikko Kokkonen
mikko.kokkonen@...

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Derek Harding | 1 Nov 2005 09:34

Re: Terminal printers with local ppf not local cups.

Where did you find the howto? Or can you do one?

> I have been looking at running printers from the terminals. I see a
> lot of people setting up cups on the terminals to run a cups server. I
> chose to use ppf on my terminals because it is very small and lets me
> set the desktop server as the cups server. I think cups is overkill
> for the terminals. ppf is doing a great job on the terminals and it is
> very small.
> 
> 
> Royce Souther

--

-- 
Best wishes,
Derek

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Derek Harding | 1 Nov 2005 11:22

Wireless networking performance

Hi,

An existing client has 6 thin clients and 2 printers on a 100Mb
ethernet. They are extending their office space and wireless is the
obvious way to connect the two parts of the LAN (one network - not
subnet). This will leave them with 4 thin clients and 2 printers on the
same segment as the server with the new segment supporting a printer, 2
thin clients and 2 Windows machines with samba shared connexions on that
LAN.

They will probably have two-channel WAPs (e.g. 2x54Mps)

Any comments about performance on the wireless-connected end of the LAN?
Any comments about impact on the server segment of the LAN?

--

-- 
Best wishes,
Derek Harding
+447710655797
+33614753368

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Jim McQuillan | 1 Nov 2005 13:19

Re: Wireless networking performance

Derek,

I think that setup should work just fine.  You may notice just a little
bit of added latency, especially in X.  It will probably show up, if you
grab ahold of a windo and move it around or resize it.  It may just
appear to lag a bit.  But, I seriously doubt if anybody would have a
problem, or even notice, if you don't point it out to them.

Jim McQuillan
jam@...

On Tue, 1 Nov 2005, Derek Harding wrote:

> Hi,
>
> An existing client has 6 thin clients and 2 printers on a 100Mb
> ethernet. They are extending their office space and wireless is the
> obvious way to connect the two parts of the LAN (one network - not
> subnet). This will leave them with 4 thin clients and 2 printers on the
> same segment as the server with the new segment supporting a printer, 2
> thin clients and 2 Windows machines with samba shared connexions on that
> LAN.
>
> They will probably have two-channel WAPs (e.g. 2x54Mps)
>
> Any comments about performance on the wireless-connected end of the LAN?
> Any comments about impact on the server segment of the LAN?
>
> --
> Best wishes,
> Derek Harding
> +447710655797
> +33614753368
>
>
>
> -------------------------------------------------------
> This SF.Net email is sponsored by the JBoss Inc.
> Get Certified Today * Register for a JBoss Training Course
> Free Certification Exam for All Training Attendees Through End of 2005
> Visit http://www.jboss.com/services/certification for more information
> _____________________________________________________________________
> Ltsp-discuss mailing list.   To un-subscribe, or change prefs, goto:
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>

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Cory Oldford | 1 Nov 2005 14:46

Re: LocalMedia, why Samba, why not sshfs?

Sorry to say it but that is the most insecure way you could have done it. Setup NIS and your permission kludge
will be unnecessary.

Cory Oldford

----- Original Message -----
From: Mikko Kokkonen <mikko.kokkonen@...>
Date: Tuesday, November 1, 2005 0:57 am
Subject: Re: [Ltsp-discuss] LocalMedia, why Samba, why not sshfs?

> > I think Samba could cause some security problems that would be  
> > solved by sshfs. Has anyone done LocalMeda using sshfs yet? How  
> > well does it work with terminals?
> > I have used sshfs before but not with terminals. I like it and I  
> > think it is worth a look.
> I tried sshfs and it worked quite well. It was easy to set up 
> public  
> key etc. I created public key only for root so it is easy to users  
> because then they are not required to do anything. KDM login 
> scripts  
> mounted local media to user's desktop. Only problem I run into was  
> that in our system home folders are mounted by NFS with root_squash 
> 
> so users had to have home directory to all executable (chmod a+x ~) 
> 
> and that was not a very nice solution.
> Now I am testing ltspfs and it seems to be better solution because  
> now users can mount folders by themselfs.
> 
> 
> --
> Mikko Kokkonen
> mikko.kokkonen@...
> 
> 
> 
> 
> -------------------------------------------------------
> This SF.Net email is sponsored by the JBoss Inc.
> Get Certified Today * Register for a JBoss Training Course
> Free Certification Exam for All Training Attendees Through End of 2005
> Visit http://www.jboss.com/services/certification for more information
> _____________________________________________________________________
> Ltsp-discuss mailing list.   To un-subscribe, or change prefs, goto:
>      https://lists.sourceforge.net/lists/listinfo/ltsp-discuss
> For additional LTSP help,   try #ltsp channel on irc.freenode.net
> 

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Scott Balneaves | 1 Nov 2005 16:40

Re: LocalMedia, why Samba, why not sshfs?

On Mon, Oct 31, 2005 at 04:55:31PM -0700, Roy Souther wrote:
> ...why Samba and why not sshfs?

Well, at the time when we were looking at it, we didn't know about
sshfs.  Now, of course, we do, but the problem with sshfs is that it
doesn't implement the statfs() call, which causes problems with nautilus
because nautilus wants to check the size of the filesystem before
copying a file.

Much better will be (when we move to 4.2), the new ltspfs filesystem
that we've come up with.  It implements full filesystem specs, and is
very lightweight.  Check out the work-in-progress page on the wiki for
info.

Scott

--

-- 
(o_  Scott L. Balneaves | "You are the Universe's only chance to appreciate
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