Note that PPPoE is anyway encapsulated in ATM so you eventually get an 
additional (and useless) overhead.
 Some say you never feel it, others say you do.
Anyway, to avoid unnecessary encapsulation is always an advantage. 
The hack of Alcatel SpeedTouch home to SpeedTouch Pro is worth it, seeing as 
you avoid such an additional encapsulation. 
BTW, a SpeedTouch home changed to a SpeedTouch pro does not offer any open port 
(doesn't even respond to ping) so it may be considered as quite secure (if you 
don't define a default internal server in the NAT parameters). 
http://www.sateh.com (if I remember well)




        -----Original Message-----
        From:   Jean-Francois Dive [SMTP:[EMAIL PROTECTED]
        Sent:   Thursday, February 21, 2002 2:17 PM
        To:     [EMAIL PROTECTED]
        Cc:     debian-user@lists.debian.org; debian-security@lists.debian.org
        Subject:        Re: PPPoverEthernet vs. PPPoverATM

        Hello,

        The adsl protocol is based on ATM anyhow. ATM cells leave the CPE (the 
thing which
        have the phone line in) to reach the local DSLAM which aggregare 
multiple client
        and then goes in a WAN which may be quite a lot of things. The question 
to know
        if you have to run pppoe or pppoatm is to know how you'll connect to 
the phone line:
        for exemple, if you have an ADSL pci card or a USB modem, then the ATM 
session will be
        started on the PC running this adapter, so you need to have ATM and 
pppoatm support
        in linux. This is doable, depending on the card you have, i configured 
it sucessfully
        on a debian + alcatel speedtouch USB.

        In your scheme, you'll neeed the cisco to run a pppoe client service, 
to start the ppp
        connection from there. Cisco support for pppoe have been introduced in 
12.1 or 12.1T
        if i remember correctly and is in the stable (well stable ..) 12.2 main 
train. I thing
        is that i am sure the feature exist for the 827, but am definitively 
not sure for the 
        2500. In all cases, a simple debian box with 2 cards will give you the 
same features and
        more.

        hope that help,

        JeF

        On Thu, Feb 21, 2002 at 08:56:55AM +0100, [EMAIL PROTECTED] wrote:
        > I'm about to turn to ADSL connection to Internet and I'm taking in 
consideration
        > all the choises the Provider offer. I was surprised in seening they 
offer
        > an ADSL service not only using the PPP-over-Eth protocol, but also 
with
        > the PPP-over-ATM. So my question is: if I choose the second system, 
is debian
        > support it? what is the best configuration (I think I will use the 
following
        > hardware: ADSL modem + Cisco 25xx router through Ethernet cable 
connection)?
        > Thanx in advance!
        > 
        > §§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§
        > GNU/Debian Linux RULES anyhow!
        > 
        > 
        > 
        > 
        > -- 
        > To UNSUBSCRIBE, email to [EMAIL PROTECTED]
        > with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
        > 

        -- 
        -> Jean-Francois Dive
        --> [EMAIL PROTECTED]


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