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.
SDN 101: An Introduction to Software Defined Networking
Discover the advantages of SDN.
SDN has quickly become one of the hottest trends in IT. But not all SDN solutions offer real software-defined functionality. As more enterprises consider SDN, they want to know, “What is SDN? And what are the real benefits?” If you're ready to explore the advantages of SDN, and want to know how it should be implemented within your enterprise, start by reading our introductory white paper.
Click Here to receive this Complete Guide absolutely free.
I'm using Qwest DSL with a Cisco 678 DSL router. I'm on PPP with a dynamic IP. My IP doesn't change, I always get the same IP. I'm using NAT on the Cisco as I only have the one IP address. Port 53 UDP and TCP is forwarded to my Redhat box running Bind. Internally my RH box takes all DNS requests without a problem resolving everything as expected. yahoo.com, google.com all resolve without issue. You can ping my domain and my alias's I have defined for it and the DNS server returns the correct IP. When you try and use my DNS server as your primary DNS server external to my network it returns the IP of the DSL router for every request. If you ping yahoo.com it will return the IP of the DSL router as the IP of yahoo.com. I know there is communication back to the DNS server because it will resolve my aliases for my domain. Here's the odd part. Even with an internal IP scheme setup in the DNS server it still returns the DSL routers IP for those aliases. Currently I have it set up to return the DSL routers IP. As you can see my setup seems to have some issues. The problem is with NAT and port forwarding and PPP. Somewhere in that mix lies the issue. Any help would be appreciated. My IP is: 126.96.36.199. My domain is spokanerc.net. One of my aliases is: ns1.spokanerc.net. Any help is appreciated!
I'm not even using ipchains as far as I know. This is a bare min RH8 install. I"m manually adding each package as I build up this system. I'm probably going to call this port forwarding from the Cisco issue moot soon, break down and spend the extra $14 a mos for 5 static IPs. I really need two DNS servers for this to be set up properly. Right now I pointed my domain record secondary dns to an unused IP that qwest has : ) but that isn't the right way to do things. Thanks for the advice!
Last edited by nidputerguy; 01-27-2004 at 10:35 PM.
I'll let you all know where it stands once I get my block of statics working. Qwest is horrible for tech support! By the time I'm done with them I'll have over 3 hours on the phone, most of it on hold. I'm going to demand they rescind the 50$ setup fee or they can keep their IP's and I'll go to a different ISP.