[nflug] DSL

Joshua Ronne Altemoos joshua at wolfnix.net
Fri Apr 21 19:31:43 EDT 2006


DSL does use PPPoE, but there new modems automaticly logins if you use the
windows setup, and it sets DCHP for it's lan port. You can disable this to
allow pass through If you have a router.

 

-----Original Message-----
From: nflug-bounces at nflug.org [mailto:nflug-bounces at nflug.org] On Behalf Of
Joe
Sent: Thursday, April 20, 2006 7:06 PM
To: nflug at nflug.org
Subject: Re: [nflug] DSL

John Nichel wrote:
> Joe wrote:
>> I got DSL and VoIP working for my partner in Windoze.  There were 
>> some pretty big bumps, but it's all smooth now.
>>
>> Now, I want to do it for my desktop running Mandrake 9.1.  (I'd wait 
>> to get a new system, but other people in the house need the phone 
>> when I'm
>> online.)
>>
>> I have two ethernet cards in the box that both seem to work, but I 
>> never used them much under Windows  and not at all under Linux.  One 
>> is a 3Com PCI 3c900 that Linux seems to like.  The other is a Network 
>> Anywhere card (700?) that doesn't seem to show up in dmesg.
>>
>> I don't really know much about configuring firewalls or ethernet.
>>
>>  From configuring the Verizon DSL for my partner, I know the modem 
>> lives at 192.168.1.1 (and uses a few others in the 192.168.1.x 
>> range).  It has an html user interface.  Verizon does _not_ use 
>> PPPoE.  I believe it needs DHCP instead.
>>
>> Is this going to be a big deal to figure out or is it fairly simple?
>>
>> Is there a *really* *simple* howto I can read?
>>
>> I don't want to do any server stuff at all with the possible 
>> exception of using a bit torrent client and that's nice, but not 
>> necessary. I just want to get the connection working for Internet 
>> access and email and be sure that I'm reasonably well protected 
>> against attacks.  As it stands now, I've never had a security problem 
>> with the default configurations using dial up.
>>
>> TIA
>>
>> Joe
>>
>> dmesg segment about the 3com card
>>
>> Linux Tulip driver version 0.9.15-pre12 (Aug 9, 2002)
>> PCI: Found IRQ 9 for device 00:0e.0
>> eth0: ADMtek Comet rev 17 at 0xf800, 00:20:78:05:A4:F4, IRQ 9.
>> PCI: Found IRQ 9 for device 00:0f.0
>> 3c59x: Donald Becker and others. www.scyld.com/network/vortex.html 
>> See Documentation/networking/vortex.txt
>> 00:0f.0: 3Com PCI 3c900 Boomerang 10baseT at 0xfc40. Vers LK1.1.18-ac 
>> 00:60:08:aa:0a:94, IRQ 9  product code 4b46 rev 00.0 date 10-26-97  
>> Internal config register is 302d8, transceivers 0xe108.
>>  8K word-wide RAM 3:5 Rx:Tx split, 10baseT interface.
>>  Enabling bus-master transmits and whole-frame receives.
>> 00:0f.0: scatter/gather enabled. h/w checksums disabled
>>
>> I looked in /dev and don't see anything like eth0, etc. so I may need 
>> to load one or more modules.
>>
>
> I've never had much luck with 3Com and Linux (specifically their 
> 509's).  The Netgear FA/311's have worked flawlessly for me though.
>
> Are you wanting to set up the Linux box to do routing, or just want to 
> get it online?  If it's the later and the Verizon modem is a Westel, 
> just set your network connection on the Linux box for DHCP (the Westel 
> /should/ handle it).  By default my Westel has most ports blocked, but 
> you can do forwarding (NAT) via the web interface for the modem.  You 
> won't need to do anything like that for surfing the web or checking 
> email though (you'll have to do it for Bittorrent).  Depending on the 
> security settings on your Linux box, you may have to open the port in 
> that firewall (in /etc/sysconfig/iptables (if this is where it's 
> located on your box) or via the GUI).
>
That sounds encouraging.  It should be a Westell (I have a spare from my
last install tribulations that I haven't sent back yet.) and I just want to
surf and email.  Now, how do I :

1) "just set your network connection on the Linux box for DHCP".  I
currently use kppp for dialup and that's all I know about.

2) What firewall?  I have gone to several websites that test your defenses
and my system looks pretty good - almost nothing open, but I don't even see
an iptables file:

root /home/bigbird/tmp: $locate iptables
/usr/share/doc/HOWTO/HTML/en/Adv-Routing/lartc.bridging.iptables.html
/usr/share/doc/HOWTO/HTML/en/Linuxs-20030211/Adv-Routing-HOWTO/lartc.bridgin
g.iptables.html
/usr/src/linux-2.4.21-0.11mdk/include/config/ip6/nf/iptables.h
/usr/src/linux-2.4.21-0.11mdk/include/config/ip6/nf/iptables
/usr/src/linux-2.4.21-0.11mdk/include/config/ip6/nf/iptables/module.h
/usr/src/linux-2.4.21-0.11mdk/include/config/ip/nf/iptables.h
/usr/src/linux-2.4.21-0.11mdk/include/config/ip/nf/iptables
/usr/src/linux-2.4.21-0.11mdk/include/config/ip/nf/iptables/module.h

I'd like to get bit torrent working, but it's a moot point until the simple
stuff works (and the rest of the household stops getting upset over a tied
up phone line).

Thanks.

Joe



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