Linux - NetworkingThis forum is for any issue related to networks or networking.
Routing, network cards, OSI, etc. Anything is fair game.
Welcome to LinuxQuestions.org, a friendly and active Linux Community.
You are currently viewing LQ as a guest. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Registration is quick, simple and absolutely free. Join our community today!
Note that registered members see fewer ads, and ContentLink is completely disabled once you log in.
If you have any problems with the registration process or your account login, please contact us. If you need to reset your password, click here.
Having a problem logging in? Please visit this page to clear all LQ-related cookies.
Introduction to Linux - A Hands on Guide
This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started guide, with exercises at the end of each chapter.
For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration. This book contains many real life examples derived from the author's experience as a Linux system and network administrator, trainer and consultant. They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own.
Click Here to receive this Complete Guide absolutely free.
I'm a newbie. I just installed RH 9.0 on two dual boot windoze machines. They are connected through wire to a cable modem. The ethernet network on neither machine gets activated. I get the error message posted in the original email. please please help.
Hey, I am having the same problem. I have a linux box connected to a hub, then a dsl modem. I get the exact same errors with I set it up to use DHCP. The modem also acts as a router and is supposed to deliver an IP to the Linux box, but it doesn't work for some reason. It works fine with my mac and XP machines though. If you, or someone else finds an answer please let me know. I'll do the same.
if you are using a dhcp internet/network connection, and want to use it on a linux box, you need to check for the presence of a dhcp client on my nice new linux router its called dhcpcd, on my old router its called dhclient )
guru's please correct me if i am wrong, but my understanding of the two is the following:
dhclient: will look at the network ( provided its state is up and working ) and ask for an ip address, when it has your ip address ( + any other settings the server gives ) it will apply it to your network card and then quit
dhcpcd: will do every thing dhclient does except it does not quit ( its a daemon ( a program that runs in the background ) ) it stays running and when your dhcp says right your ip lease is up ( you have a time limit on some servers ) dhcpcd re-requests, either the same, or a new ip address and re-applys those settings to your network adapter
first of all, here are a few things you should check
1. do you have the correct network card drivers loaded? sometimes you may need to specify extra options for the kernel module
2. type ifconfig can you see eth0 and lo ? before or after you run your network script
I thought I would have to learn the guts of iptables but didn't need to.
These are the steps I followed:
start network configurator gui (system tools -> network)
make sure the ethernet connection is not using aliases, i.e. it should only say eth0, not eth0:1 (my installed configuration had this for some unknown reason). I believe DHCP does not work with aliases.
click on DHCP
make sure DNS route field is empty. for some reason my field said "localdomain", and consequently it would never resolve IP addresses.
This is under the DNS tab.
After working with this problem for a day or so, I determined that the problem might have been with the ethernet card itself. It was an old one, and the installation guide did say that Red Hat couldn't guarantee compatibility with older hardware. Also, on the network panel, LInux did not identify my ethernet card as a specific model and so just called it 'generic' or 'compatible'.
So I went to Fry's, bought a new ethernet card for 10 bucks, installed it and everything (network, web) came up automatically. Life is beautiful again.