DNS resolve problem with ping but not nslookup
vagniphor
After failing to update my windows XP to SP3, my PC was not able to
resolve DNS with most softwares. The only one that seems to still work
now is my Opera browser. Others, such as IE 6, firefox are not able to
resolve the DNS.
I tried pinging google and it also fails.
*C:\>ping www.google.com
Ping request could not find host www.google.com. Please check the name
and try again.*
But nslookup can still work
**** Can't find server name for address 192.168.0.1: Non-existent
domain
*** Default servers are not available
Server: UnKnown
Address: 192.168.0.1
Non-authoritative answer:
Name: www.l.google.com
Addresses: 209.85.165.103, 209.85.165.104, 209.85.165.147,
209.85.165.99
Aliases: www.google.com*
Here are the results of ipconfig /all:
Windows IP Configuration
Host Name . . . . . . . . . . . . : xxxxxx
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : hsd1.fl.comcast.net.
Ethernet adapter Local Area Connection 3:
Connection-specific DNS Suffix . : hsd1.fl.comcast.net.
Description . . . . . . . . . . . : VIA Rhine II Fast Ethernet
Adapter
Physical Address. . . . . . . . . : XX-XX-XX-XX-XX-XX
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 192.168.0.10
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.0.1
DHCP Server . . . . . . . . . . . : 192.168.0.1
DNS Servers . . . . . . . . . . . : 192.168.0.1
Lease Obtained. . . . . . . . . . : Monday, October 13, 2008
6:39:05 AM
Lease Expires . . . . . . . . . . : Thursday, October 16, 2008
6:39:05 AM
--
vagniphor
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Paul Bergson [MVP-DS]
normal. If you can do an nslookup on a site, then dns is resolving
correctly. It sounds more like the browsers you are attempting to use are
corrupted.
--
Paul Bergson
MVP - Directory Services
MCTS, MCT, MCSE, MCSA, Security+, BS CSci
2008, 2003, 2000 (Early Achiever), NT4
Please no e-mails, any questions should be posted in the NewsGroup
This posting is provided "AS IS" with no warranties, and confers no rights.
"vagniphor" <vagnipho...@DoNotSpam.com> wrote in message
news:vagnipho...@DoNotSpam.com...
vagniphor
'Paul Bergson [MVP-DS Wrote:
> ;4022904']Ping isn't going to work with many of the external host sites,
> so this is
> normal. If you can do an nslookup on a site, then dns is resolving
> correctly. It sounds more like the browsers you are attempting to use
> are
> corrupted.
>
> --
> Paul Bergson
> MVP - Directory Services
> MCTS, MCT, MCSE, MCSA, Security+, BS CSci
> 2008, 2003, 2000 (Early Achiever), NT4
>
> http://www.pbbergs.com
>
> Please no e-mails, any questions should be posted in the NewsGroup
> This posting is provided "AS IS" with no warranties, and confers no
> rights.
>
>
From my prior experience, even if ping does not work on some external
host sites, it would show another error message. The DNS would still be
resolved, but the ping would time out. So I don't think that's the case.
Secondly, there are other software other than the two browsers that are
unable to resolve the DNS on my PC. So I don't think anything is
corrupted with the browsers.
welchja
i'm haveing the somewhat the same problem. firefox and IE will not go
out to web sites. email does not work either. but if i type googles ip
in the address bar it will display the website. but if i type
www.google.com it won't. very frustrating. i can ping intenal ips but no
extenal DNS names. i can ping extenal IPs and i get resopnce back. any
ideas?
--
welchja
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tenroc2o0o
I've had the exact same issue on two computers and until I read this
form it didn't occur to me it might have to do with SP3. I had just
deployed SP2 & SP3 via group policy to over 40 PCs at my clients
location while joining all of their computers to the new active
directory network.
Basically, unless I use nslookup, DNS doesn't work. This includes
Firefox, Internet Explorer, as well as internal active directory lookups
to authenticate usernames and passwords against the domain. Noone could
log on to the computer as a domain user - had to logon as local admin to
work on it.
This means I could, say, "nslookup myserver.mydomain.local", get the
IP, and then manually ping the IP and get a reply.
However, if I said "ping myserver.mydomain.local" it would say "Ping
request could not find host myserver.mydomain.local. Please check the
name and try again."
To me, basically this means nslookup can query because it simply opens
a winsock connection on the DNS port and gets a query itself, whereas
ping, IE, Firefox, and Windows itself for active directory domain
authentication all cannot since they use the DNS Client service.
I had this same problem on now two computers. The first one, which I
worked on earlier this week, I ended up formatting the computer to fix.
I tried specifying a static IP & DNS instead of using DHCP.
I tried uninstalling/reinstalling the network adapter.
I checked the Winsock using LSPFix to make sure there weren't any files
missing or malware.
I checked hijackthis log for other malware - all clean.
I tried resetting all of the registry entries for the TCP/IP stack
using "netsh int ip reset c:\resetlog.txt"
Now that I realized SP3 might be involved, I checked this second
computer where the problem just surfaced - and sure enough - it still
has SP2 listed in under System Properties, but SP3 is in the list of
Add/Remove programs. I went ahead and uninstalled SP3 (which took like
5 seconds.. kind of wierd) and it had no affect on the problem. I'm
going to try to reinstall SP3 and see if it corrects the problem.
Both machines were Acer, if that makes a difference. You never know..
it might be some of the crap software they preload on it.
--
tenroc2o0o
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Jonghyun
did everything I can such as removing and reinstalling winsock , TCP/IP but
failed. And the last thing I do was to stop dns client service and it now
works fine. I don't know why. Is there someone who can explain it?
Jonghyun
tng
Something with AD configuration?
I got the same problem with my two new virtual redhat and suse. It was
the directory LDAP client which was the problem. Now both servers are
running correctly.
If using linux (redhat or suse):
look at nsswitch.conf & ldap.conf
1) put "bind_policy soft" in /etc/ldap.conf
2) nsswitch.conf must minimum have:
passwd: compat
group: compat
hosts: files dns
networks: files dns
services: files
protocols: files
rpc: files
ethers: files
netmasks: files
netgroup: files
publickey: files
bootparams: files
automount: files nis
aliases: files
3) reboot
4) check with: ping, nmap localhost.
5) now you can enable your ldap client again. (RH: authconfig ; suse:
yast2 ldap). It will modify your nsswitch.conf
ref:
https://bugzilla.redhat.com/show_bug.cgi?id=221199
https://bugzilla.redhat.com/show_bug.cgi?id=186527
http://www.flyn.org/laptopldap/index.html
BR
TN
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tng
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Ace Fekay [MCT]
TNG,
I don't know what you're responding to, becaues we can only see your post in the Microsoft DNS newsgroup because the original or prior posts in this thread have expired in the newsgroups (they're older than 90 days), but based on the subject line, I can say that pings and nslookup problems are not related to AD, rather they are based on the client's network configuration and the client side resolver service.
--
Ace
This posting is provided "AS-IS" with no warranties or guarantees and confers no rights.
Please reply back to the newsgroup or forum to benefit from collaboration among responding engineers, and to help others benefit from your resolution.
Ace Fekay, MCT, MCSE, MCSA 2003 & 2000, MCSA Messaging
Microsoft Certified Trainer
ace...@mvps.RemoveThisPart.org
http://twitter.com/acefekay
For urgent issues, you may want to contact Microsoft PSS directly. Please check http://support.microsoft.com for regional support phone numbers.
JStamos
What a lifesaver this thread was. After trying a thousand things that
didn't work like registry edits, reinstalling TCP/IP and
uninstalling/reinstalling Bonjour this did the trick. I uninstalled SP3
and reinstalled it and now the machine is fine again. I was preparing
to reload the whole thing and what a pain that would have been.
Thanks a million, Tenroc2000!
--
JStamos
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