on 7-10-2008 2:32 PM Lanny Marcus spake the following:
When you set up your connection to your provider, do you have a static address or dynamic? If static, you had to set your next step resolver in the config. If you are dynamic, you get what your provider sends with the dhcp request. Since you said you have an ipcop box for your router you should be able to ssh into it and run setup and change your nameserver setting to 127.0.0.1 and your ipcop should be a caching nameserver. If you have another address there it will query to that server.On 7/10/08, Scott Silva <ssilva@xxxxxxxxxxxx> wrote: <snip>Try dig +trace emcali.net It should show all servers "your" query goes through.Scott: Please note that I added ".co" (for Colombia) emcali.net.co Is this showing which DNS Servers my DNS requests use, or, which DNS Servers serve their web site? Also note that when I tried "dig +trace" or "dig trace" I got very abbreviated answers. Probably I don't have the syntax correct. Question: Is there another command I can use, to another web site (irs.gov or something) that shows which DNS Servers I am using, to get to that web site? My wife is complaining, again, as I write this, so getting our own Caching DNS Server, ASAP, has become a priority. When Colombian women are mad... :-) TIA, Lanny
I just tried it from one of my ipcop boxes and got a query all the way to the root servers;
dig +trace gmail.com ; <<>> DiG 9.3.4-P1 <<>> +trace gmail.com ;; global options: printcmd . 353305 IN NS E.ROOT-SERVERS.NET. . 353305 IN NS F.ROOT-SERVERS.NET. . 353305 IN NS G.ROOT-SERVERS.NET. . 353305 IN NS H.ROOT-SERVERS.NET. . 353305 IN NS I.ROOT-SERVERS.NET. . 353305 IN NS J.ROOT-SERVERS.NET. . 353305 IN NS K.ROOT-SERVERS.NET. . 353305 IN NS L.ROOT-SERVERS.NET. . 353305 IN NS M.ROOT-SERVERS.NET. . 353305 IN NS A.ROOT-SERVERS.NET. . 353305 IN NS B.ROOT-SERVERS.NET. . 353305 IN NS C.ROOT-SERVERS.NET. . 353305 IN NS D.ROOT-SERVERS.NET. ;; Received 376 bytes from 127.0.0.1#53(127.0.0.1) in 0 ms com. 172800 IN NS G.GTLD-SERVERS.NET. com. 172800 IN NS D.GTLD-SERVERS.NET. com. 172800 IN NS H.GTLD-SERVERS.NET. com. 172800 IN NS J.GTLD-SERVERS.NET. com. 172800 IN NS F.GTLD-SERVERS.NET. com. 172800 IN NS B.GTLD-SERVERS.NET. com. 172800 IN NS A.GTLD-SERVERS.NET. com. 172800 IN NS E.GTLD-SERVERS.NET. com. 172800 IN NS C.GTLD-SERVERS.NET. com. 172800 IN NS K.GTLD-SERVERS.NET. com. 172800 IN NS I.GTLD-SERVERS.NET. com. 172800 IN NS M.GTLD-SERVERS.NET. com. 172800 IN NS L.GTLD-SERVERS.NET. ;; Received 499 bytes from 192.203.230.10#53(E.ROOT-SERVERS.NET) in 23 ms gmail.com. 172800 IN NS ns1.google.com. gmail.com. 172800 IN NS ns2.google.com. gmail.com. 172800 IN NS ns3.google.com. gmail.com. 172800 IN NS ns4.google.com. ;; Received 170 bytes from 192.42.93.30#53(G.GTLD-SERVERS.NET) in 22 ms gmail.com. 60 IN A 209.85.171.83 gmail.com. 60 IN A 64.233.171.83 gmail.com. 60 IN A 64.233.161.83 gmail.com. 345600 IN NS ns1.google.com. gmail.com. 345600 IN NS ns2.google.com. gmail.com. 345600 IN NS ns3.google.com. gmail.com. 345600 IN NS ns4.google.com. ;; Received 218 bytes from 216.239.32.10#53(ns1.google.com) in 44 ms -- MailScanner is like deodorant... You hope everybody uses it, and you notice quickly if they don't!!!!
Attachment:
signature.asc
Description: OpenPGP digital signature
_______________________________________________ CentOS mailing list CentOS@xxxxxxxxxx http://lists.centos.org/mailman/listinfo/centos
