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 have a need to determine the secondary (and even alternate) nameservers that are provided by my (or any) isp. These are returned, of course, when a DHCP request is made, however I want to be able to query for these in cases where the nameservers are not known and where I am not making a DHCP request. (In my particular case, I'm working on an embedded project which in some cases will act as a NAT router (between customer internet modem and another router or standalone equipment). In cases where my device has a static address on the wan side, i don't want to burden a customer with having to make dns ip entries, etc.
nslookup does a nice job of returning the (assumed: primary) nameserver that was used in the lookup request. Example: