Message: 23 Date: Fri, 13 Jul 2007 22:11:59 -0400 From: Dan Halbert halbert@everyzing.com Subject: Re: [CentOS] Newbie ADSL configuration, ppp0 can't activate & config not found To: CentOS mailing list centos@centos.org Message-ID: 469830EF.3080601@everyzing.com
mailing-lists@computer2.com wrote: <snip>
If you have a router, then the ADSL connection you have is handled by the router, and is invisible to you, on the LAN side of the router. The router could be connecting to the WAN via a piece of wet string, as far as you care. So you should just have eth0 do DHCP and leave it connected to the router. You'll get an address like 192.168.1.2 from the router. You don't need ppp0 at all; to Centos the router appears like a LAN that routes to the Internet.
In Windows, do "ipconfig" in a Command window, and you'll see what I mean. You should see something similar with ifconfig in Centos.
Dan: Thank you for replying! I will try what you suggested, ASAP. Yesterday was Friday the 13th.... I need to get this working, before I try to get my Firewall/Router working! Lanny
On Sat, Jul 14, 2007 at 10:34:01AM -0400, mailing-lists@computer2.com said:
Message: 23 Date: Fri, 13 Jul 2007 22:11:59 -0400 From: Dan Halbert halbert@everyzing.com Subject: Re: [CentOS] Newbie ADSL configuration, ppp0 can't activate & config not found To: CentOS mailing list centos@centos.org Message-ID: 469830EF.3080601@everyzing.com
mailing-lists@computer2.com wrote:
<snip>
If you have a router, then the ADSL connection you have is handled by the router, and is invisible to you, on the LAN side of the router. The router could be connecting to the WAN via a piece of wet string, as far as you care. So you should just have eth0 do DHCP and leave it connected to the router. You'll get an address like 192.168.1.2 from the router. You don't need ppp0 at all; to Centos the router appears like a LAN that routes to the Internet.
In Windows, do "ipconfig" in a Command window, and you'll see what I mean. You should see something similar with ifconfig in Centos.
Dan: Thank you for replying! I will try what you suggested, ASAP. Yesterday was Friday the 13th.... I need to get this working, before I try to get my Firewall/Router working! Lanny
Some pain-in-the-ass ISP's force you to do PPPoE instead of DHCP. Some give you a DSL modem that does NAT and the PPPoE stuff for you, some don't. If you have one that doesn't, a cheap Linksys "router" can do the NAT and PPPoE for you if you don't fee comfortable doing it in Linux.
I prefer to to use a Sangoma S518 ADSL PCI card for $120US and do everything on the Linux side. Fortunately, I have a static and not dynamic address, but the majority is the same. The big advantage is that I can do traffic shaping / QoS without dealing with massive modem buffers which can totally screw that up. It's good enough that I can run torrents, interactive ssh sessions, and VoIP calls all at the same time on a 1.5/384 DSL connection.
While this doesn't fix your problem, it's food for thought.
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Walt Reed