on 7-11-2008 1:48 PM Lanny Marcus spake the following:
It looks as if your ADSL modem is in NAT mode, so it is acting like a very simple router already. What settings does it actually have?On 7/11/08, Scott Silva <ssilva@xxxxxxxxxxxx> wrote: <snip>I am looking at it from the web interface. Under DHCP, for the Green Interface, for Primary DNS, it shows 192.168.10.1 If I change that to 127.0.0.1 I'm done? Other than possibly needing to change a configuration setting in the ADSL Modem, regarding DNS? Thanks much!No !!! Don't change it there. That is the IP address sent to your dhcp clients for them to use for dns. If you set that to 127.0.0.1, no one will find anything. You need to run setup either from a terminal window on the ipcop box or by ssh. About halfway down is "Networking" which you select, and in that menu is "Dns and Gateway Settings". You would set the primary dns to 127.0.0.1 and if you want set the secondary dns to what your primary dns was set at. You might have to play with the options to have dhcp assigned red and still be able to set your nameserver settings. The ipcop boxes I have are all on static ip's, on either T1's or business class DSL, so the settings are a little different.Scott: Thank you, for the above explanation! I was able to SSH into the IPCop box on Port 222, very early this morning (with the syntax correct, that was easy) and I saw the Setup menu.Whatever you do, write down the original settings of anything you change so you can restore it if it horribly breaks.Amen. I will write down the original settings, before I change them. In a tiny way, the IPCop box is a "Production" Server in our house. I have two (2) very demanding users: a wife and a 7 year old daughter and I don't want them mad.... :-) Something like not wanting your boss at work mad at you.... I am going to be working on this, when they are not using their Desktop boxes and I am going to do this on our Backup IPCop box, which actually has much better HW than the one we normally use for IPCop. If I can't get this to work on IPCop, that is the one I will install SME Server or the CentOS 4.4 Server CD on. It sounds like this is going to work on IPCop, which will be much easier and much faster for me to get up and running properly. Question: Awhile ago, I got into the configuration settings for our ZTE ADSL Modem. For the change to me having my own Caching DNS Server, in the settings for the ADSL modem at this time, using the DNS servers at our ISP: Primary DNS Server 200.29.104.22 Secondary DNS Server 200.29.96.22 When I think I am ready to test the change I make to IPCop setting(s), should I set those to 0.0.0.0. so I can use my own DNS Server ? Or. leave those spaces blank? Or, leave them as they are now? Thank you, very much, for your time and help, which are greatly appreciated! Lanny
I think you can leave those settings alone, as they only will be used if you point DNS settings at the modems ip address. If you set your IPcop box at 127.0.0.1 it should seek out to the root servers by itself.
As I posted earlier, you will have to poke around in the ipcop setup menu to get dhcp and custom DNS settings both working.
I just played with one of my test vmware ipcop images and set it to dhcp on our internal network (which should simulate your natted connection through your adsl modem) for the red interface and I was able to dig +trace google.com with proper answers. So it is possible to get it working unless your ISP blocks DNS queries to anywhere else but their own servers.
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