Here's the dig-google.pcap file attached, if it helps.

Best Regards, Gaurav

On Tue, Mar 9, 2010 at 1:25 AM, Gaurav N. gaurav.knangla@gmail.com wrote:

UPDATE:

I tried with FreeBSD8 as well and the DNS query didn't work. This is beginning to look more and more like an issue with my UTStarcom *WA3002G4 ADSL2+ Router and its NAT config or the lack of it.*

*My setup and the ip addresses:* *Router 192.168.1.1* *Windows 192.168.1.2* *Centos 5.4 192.168.1.3* *FreeBSD8 192.168.1.4*

*The windows host works fine with no issues with DNS queries.*

Best Regards, Gaurav

On Tue, Mar 9, 2010 at 12:08 AM, Gaurav Nangla gaurav.knangla@gmail.comwrote:

...

[root@cent5 ~]# dig www.google.com @208.67.220.220

; <<>> DiG 9.3.6-P1-RedHat-9.3.6-4.P1.el5 <<>> www.google.com @ 208.67.220.220 ;; global options: printcmd ;; connection timed out; no servers could be reached

Best Regards, Gaurav

On Mon, Mar 8, 2010 at 5:21 PM, Pitshou Asingalembi depitsho@yahoo.frwrote:

...

John R Pierce wrote:

...

Gaurav Nangla wrote:

...

I can ping the google.com http://google.com ip addresses (209.85.231.104) but can't ping the FQDN, obviously DNS is broken.

I can also ping the nameserver ip addresses specified in

/etc/resolv.conf.

...

...

well, the DNS servers given by your resolv.conf output seem valid from here.. I recommend doing some more debugging with `host` or similar

DNS

...

diagnostic tools.

note regular DNS lookups like these tend to use UDP rather than TCP, if you're behind a NAT firewall which doesn't allow outbound udp port 53 and connection track the response, then things might not work well.

$ host google.com 208.67.220.220 Using domain server: Name: 208.67.220.220 Address: 208.67.220.220#53 Aliases:

google.com has address 74.125.19.105 google.com has address 74.125.19.99 google.com has address 74.125.19.103 google.com has address 74.125.19.106 google.com has address 74.125.19.147 google.com has address 74.125.19.104 google.com mail is handled by 400 google.com.s9b2.psmtp.com. google.com mail is handled by 200 google.com.s9a2.psmtp.com. google.com mail is handled by 300 google.com.s9b1.psmtp.com. google.com mail is handled by 100 google.com.s9a1.psmtp.com.

$ host google.com 208.67.222.222 Using domain server: Name: 208.67.222.222 Address: 208.67.222.222#53 Aliases:

google.com has address 74.125.19.105 google.com has address 74.125.19.147 google.com has address 74.125.19.99 google.com has address 74.125.19.103 google.com has address 74.125.19.104 google.com has address 74.125.19.106 google.com mail is handled by 400 google.com.s9b2.psmtp.com. google.com mail is handled by 200 google.com.s9a2.psmtp.com. google.com mail is handled by 300 google.com.s9b1.psmtp.com. google.com mail is handled by 100 google.com.s9a1.psmtp.com. _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos

please try: dig www.google.com @IPofyourDNSserver and send me the output _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos