Bill Campbell wrote:
I am building a CentOS 5 box to ship to Houston which will be a gateway system on an SBC DSL connection for a while until the client gets a T1 installed. I have read up on using adsl-setup and related software, but never done PPPoE on anything but LinkSys commodity boxes. I have examined the adsl-setup script, and I think I understand how this works, but want to be sure I understand things first.
I am running a Centos 5 box as my ADSL/PPoE gateway, the ISP's box is in bridge mode.
I ran the system-config-network about a year ago to set this up. I don't have any real records of what I did, but for example, /etc/ppp/chap-secret has comment lines in it that say:
####### redhat-config-network will overwrite this part!!! (begin) ##########
followed by a line wiht my account and password.
And of course there is /etc/sysconfig/network-scripts/ifcfg-ppp0 set up as well.
Perhaps I did run an adsl-setup script. That sounds kind of right.
I am running IPv6 as well and have static internal routes running for IPv4 and IPv6. I run shorewall for IPv4 protection and ip6tables for IPv6.
The box has dual 10/100/1000 NICs, eth0 for the internal LAN, and eth1 for the PPPoE interface, and later the T1.
After running the adsl-setup script, answering the prompts, it appears that it will create an ifcfg-ppp0 interface which will take care of handling the eth1 interface. It also should handle default route setting when the system boots, and do the initial setting of the /etc/resolv.conf file. We will not be using the adsl package firewalling/NAT as we have our own procedures for this.
This seems reasonably straightforward, but I know Murphy is always ready to pounce as soon as I assume anything.
Is adsl-setup and its associated programs the best way to handle this on a CentOS box?
I think that the WAN interface will appear as ppp0 when the system is running.
When we move the system to the T1, is it sufficient to edit the ifcfg-ppp0 script setting ONBOOT=no, then do a normal configuration of eth1 using system-config-network? This is something I will have to talk somebody through over the phone unless it would work to connect the DSL modem and T1 router to a network hub/switch with eth1 so that I could configure eth1 while logged in via the DSL connection, the restart the networking to have it bring down the DSL connection, then bring up the T1.
What am I forgetting?
Thanks.
Bill