RE: VPN

[Dan Schad <dschad seielect com>]

Sorry Brad, my last response did not seem to go out so I will try again...

-----Original Message-----
From: Mugleston, Brad [mailto:brad mugleston gwl com]
Sent: Tuesday, December 02, 2003 10:06 AM
To: redhat-install-list redhat com
Subject: RE: VPN


Bottom Posted

-----Original Message-----
From: Guy Rouillier [mailto:guy-rouillier speakeasy net]
Sent: Monday, December 01, 2003 8:12 PM
To: redhat-install-list redhat com
Subject: Re: VPN


Mugleston, Brad wrote:

> I just upgraded to RedHat 9 and thought I'd use the supplied
> VPN software to connect to work rather than the CISCO version from work
> as it's really designed to go with Windows and doesn't work that great.
> 
> Some background you may need.
> 
> I'm hooking into an NT server then into my Windows2000 machine on my
> desk (or that's the plan).  I can ping the NT server from home fine. 
> One strange thing is I did traceroute to the NT server and when it was
> finished (30 rows of three stars) it came back with the prompt and
> "username = #########" with the ####### being MY work user name (not the
> user name on my home machine).
> 
> Anyway, when I go to Start ==> Internet ===> More ===> Remote Desktop
> Connection and click on that the first message I get is SLP not
> installed correctly.
> 
> So, I guess my first question is = how do I set up SLP?  I looked
> through the WEBMIN screens but I see no place to set up SLP.

Don't know about this SLP, but we are using pptpclient off sourcefource 
to connect a Linux box at home to a Microsoft VPN at work.  If I read 
your message correctly, your employer is using Microsoft VPN.  If so, 
that has a proprietary encryption (mppe), and pptpclient supports that. 
  I'm doing this under Mandrake.

> 
>Guy may have said something important here.  Is it possible that I have to
>be using compatible VPN programs on both ends?  The one they gave me to use
>was by CISCO (they make both a Windows and a Linux version).  If that is
the
>case then that may be where my problem is.  I would have thought they would
>be more generic.


>If this is the case how does everyone see the screen on the other end?
This
>is what happens.  I start up the CISCO version of VPN and it connects me
>with the computers here at work.  I've got two or three logons/passwords I

I've heard the CISCO VPN stuff is very good actually but you can see my
comments below regarding VPN.  The previous poster is correct regarding VPN
compatibility.

>need to give then I'm there (not sure where there is).  After that I need
>to
>open my web browser and using the java scripts from PCAnywhere I login
again
>and the screen on my computer is the same screen I left on at my desk at
>work.  Normally I have to login again but I now have my work screen
>displaying on my Linux box at home.

>In talking with others that do this under Windows theirs seems to be
running
>faster than my setup does.  The part that is slowing me down, I believe, is
>the java scripting part as I'm only using part of the PCAnywhere program.

Speed is very relative to your PC speed as well.  Even if you network speed
is ok your PC performance will significantly slow things up since most of
the refreshes from PCAnywhere and JVScript is executed on the PC itself.

>How does everyone else do this?

>Brad

Brad,

I couple of things you will have to know.
In order to establish a VPN connection you will have to know the Encryption
methods like IPSec, MDES5, etc.  You will also have to know the public key
setup in order to establish the connection and the Encryption methods will
initiate the creation and exchange of the private keys.  I've not setup RH 9
to use it's VPN.  I've used FreeSwan which is a great product (A little
techie though).

If you can get the necessary information out of the Cisco VPN setups you
should be able to run through the VPN setups on RH 9 (I think it's wizard
based).  If not you could try and download the FreeSwan RPM for RH 9,
install the RPM.  They have good documentation on that.

The SLP was not found on the RH Knowledge base accept for the global IP port
information.  On Novell's site it discusses SLP for Linux and how to install
or change the config files.  It would appear that you system had or has SLP
or requires SLP to work on your corp network.

Try this link out and see if it helps.

http://www.novell.com/documentation/lg/edir87/index.html?page=/documentation
/lg/edir87/edir87/data/adx281u.html

So, as I mentioned above, if you can find out the VPN setting information
you might have a chance, otherwise, you might be stuck with what you have
for now.

If you get further post again and I can try and help more.

Dan



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