DNS issues

AMPLIFRIER · Post by **AMPLIFRIER** » Fri Mar 19, 2004 7:30 pm

Ok....

on my laptop...i fire up the laptop and can hop online with no issues at all.

after the laptop site idle for a while...(like an hour or better)
dns quits working.

my desktop was doing the same thing. After a fresh install of the OS the issue went away. (i was going to reload the os on my desktop anyway) but id like to find the cause of this problem so i dont need to reload the os on my laptop.

i know the dns is the problem because when i go to the machine and it is acting up not going anywhere.......................

i can ping any ip address on the net....and i can get to a site by putting its ip in my browser...BUT....once im at the site none of the sites images come up. AND if i try to click a link on the site to another area of the same site.....it doesnt go.

i have already tried stopping and restarting the DNS service.

this problem seems to co-incide with the install of some new AV software i installed.....Panda Titanium 2004
system perviously had Norton AV on it. (will never use norton again btw).

funny thing is that my desktop system runs just fine with Panda installed now.

does this sound familiar to anyone?

ideas?

anyone know of a good FREE reg cleaner?

tia

AMP

TonyT · Post by **TonyT** » Fri Mar 19, 2004 8:07 pm

What kind of internet connection?
Using a router with DHCP?

Why are you using the DNS service anyway? I have DNS Client disabled and never any problems. I have cable and a Linksys router w/ DHCP.

I also have LAN Connection Property's TCP Advanced set to:
Advanced TCP/IP Settings DNS Tab:
unchecked Register this connections address in DNS

DNS Client
Resolves and caches DNS names and Active Directory domain controller functions. This service is not required for DNS lookups, but if it makes you happy to have it running, you may. However, DNS Client is required if using IPSEC. If you attempt to "repair" your network connection and a dialog box complains that the "DNS resolver failed to flush the cache," this service is the reason.

Post by **YeOldeStonecat** » Fri Mar 19, 2004 8:07 pm

Not that it solves the problem, but does doing the command prompt then "ipconfig /flushdns" get it working again?

AMPLIFRIER · Post by **AMPLIFRIER** » Fri Mar 19, 2004 8:24 pm

thanks for the replies....

running behing a netgear wgt624 router.
using dhcp for the laptop but not the desktop.
never saw a need to turn off the service.

and i will try flushdns next time it acts up to see.

i found a regcleaner i forgot i had.......ran that on the system.
didnt get a report showing what was "fixed" but i do have a file to undo the changes.

thanks Tony and YOSC!

AMP

Sid · Post by **Sid** » Fri Mar 19, 2004 11:56 pm

i can ping any ip address on the net

Can you ping the name and resolve it to the IP?

Try running this command at run

netsh int ip reset logfile.txt

AMPLIFRIER · Post by **AMPLIFRIER** » Sat Mar 20, 2004 9:33 am

Originally posted by Sid
Can you ping the name and resolve it to the IP?

Try running this command at run

netsh int ip reset logfile.txt

no...thats the thing......i can ping and connect to the ip by putting the ip directly in my addy bar in my browser.

so the connectivity is there......but it DOES NOT resolve the url/name

just discoverd that when i do an ipconfig i get the following

ipconfig
the application failed to initialize properly.

thanks for the post Sid.....i will try that next time the system acts up :-)

i tried flushdns prior to this and had no luck :-(

thanks again everyone for the help....it is appreciated very much

AMP

AMPLIFRIER · Post by **AMPLIFRIER** » Sat Mar 20, 2004 9:52 am

Originally posted by Sid
Can you ping the name and resolve it to the IP?

Try running this command at run

netsh int ip reset logfile.txt

sorry i dint anwser your question properly........

if i try to ping the name....it does not resolve

if i ping the ip of a site......it replies just fine.

AMP

TonyT · Post by **TonyT** » Sat Mar 20, 2004 12:12 pm

using dhcp for the laptop but not the desktop.

How can this be?
I did not know that you could config a router to use DHCP for just one client and not the others that are hooked up to it.

That means that the one not using the DHCP (the desktop) must be set up with a static ip address, and that this setup must also be config'd in the router as well. But I do not think that a router can use both at the same time, it must either use DHCP for all or Static for all.

AMPLIFRIER · Post by **AMPLIFRIER** » Sat Mar 20, 2004 12:34 pm

Originally posted by TonyT
How can this be?
I did not know that you could config a router to use DHCP for just one client and not the others that are hooked up to it.

That means that the one not using the DHCP (the desktop) must be set up with a static ip address, and that this setup must also be config'd in the router as well. But I do not think that a router can use both at the same time, it must either use DHCP for all or Static for all.

in the router i have a reserved address table set up....

my desktop will always be assigned the same ip from my router no matter what.

so i set my desktop to static because i never go anywhere with it.

my laptop i left dhcp running because im hopping on different lans all the time.

so dhcp is running on the router for the lan but my desktop does not use the routers dhcp.....but the laprop does.

so your right....its dhcp on or off in the router.....its on but i only need it for the lappy and my pda

AMP

AMPLIFRIER · Post by **AMPLIFRIER** » Sat Mar 20, 2004 6:52 pm

i think the problem is solved.....spyware infection.

cant believe i dint think to run spybot once this started happening.

after i ran spybot it told me that it had repaired network driver files.

havent had the opportunity to leave it up and let run for a day to make sure it doesnt happen again.

i will post a follow up here once i confirm or dismiss this as the solution.

thanks again all for the input

AMP

AMPLIFRIER · Post by **AMPLIFRIER** » Mon Mar 22, 2004 8:57 am

ok all....

the above mentioned step didnt fix the problem.........

i tried to disable and re-enable the nic.......i tried to reboot the router.........i ran SFC on the system.........

all to no avail.

my next step is goign to be seeing what happens while its hooked up via cat5 cable.

its currently using a wireless nic.

and it seems that this dns problem only happens after a long period of inactivity.

one common factor between the 2 systems that were effected by this is......

they both had norton antivirus uninstalled and Panda titanuim 2004 installed in its place.

AMP

TonyT · Post by **TonyT** » Mon Mar 22, 2004 10:02 am

they both had norton antivirus uninstalled and Panda titanuim 2004 installed in its place.

Unlikely that the above is a cause of the uissue unless Panda is misconfigured. NAV does not 'hook into' the network settings at all.

AMPLIFRIER · Post by **AMPLIFRIER** » Mon Mar 22, 2004 11:28 am

Originally posted by TonyT
Unlikely that the above is a cause of the uissue unless Panda is misconfigured. NAV does not 'hook into' the network settings at all.

well....i got panda setup right.

hmmmmm

this is a frustrating little annoyance.

thanks tony

AMP

cyberskye · Post by **cyberskye** » Mon Mar 22, 2004 12:40 pm

ipconfig
the application failed to initialize properly.

Um...I think you have more than a configuration problem. I'd reinstall tcp for starters.

AMPLIFRIER · Post by **AMPLIFRIER** » Tue Mar 23, 2004 12:16 pm

Originally posted by cyberskye
Um...I think you have more than a configuration problem. I'd reinstall tcp for starters.

you cant in XP

all you can do is run a netsh command to reset the tcp/ip to a "pristine" state........already tried that and it didnt work.

i performed a "repair an installation" on xp and i have yet to have been able to leave the laptop running for a stretch of time to see if the repair fixed my problem or not.

if it hasnt solved the problem....then i start removing apps to find the thorn in my side.

AMP

mnosteele52 · Post by **mnosteele52** » Tue Mar 23, 2004 12:28 pm

AMPLIFRIER I think you have already mentioned the problem.... Panda. It seems to be the common denominator, just uninstall Panda and see if the problem goes away, if so you found it if not you atleast eliminated it as a culprit.

When you can't connect what IP is given when you use the command prompt ipconfig /all? Set your NIC duplex mode to auto and undo any tweaks you have done to your registry involving TCP/IP.

Let us know how it goes.

cyberskye · Post by **cyberskye** » Tue Mar 23, 2004 1:22 pm

Do you still get this error since netsh?

ipconfig
the application failed to initialize properly.

Post by **YeOldeStonecat** » Tue Mar 23, 2004 5:00 pm

Originally posted by TonyT
How can this be?
I did not know that you could config a router to use DHCP for just one client and not the others that are hooked up to it.

That means that the one not using the DHCP (the desktop) must be set up with a static ip address, and that this setup must also be config'd in the router as well. But I do not think that a router can use both at the same time, it must either use DHCP for all or Static for all.

I do that all the time. I usually let workstations obtain their IP auto, and I'll have servers using static IP's. You assign static IP's outside the DHCP's normal scope. IE...if DHCP hands out IP's from 192.168.0.100 to 192.168.0.200, you pick something like 192.168.0.10 - 192.168.0.99 for servers or HP print servers. The server are static, the workstations are obtaining via DHCP. You can run a DHCP service while still having static IP workstations/devices on the same network.

TonyT · Post by **TonyT** » Wed Mar 24, 2004 7:09 am

awesome!

Now I can have my server set to static.

Post by **YeOldeStonecat** » Wed Mar 24, 2004 9:57 am

Of course, more ideally, I prefer to have a real server run DHCP for the network, rather than a routers humble DHCP service. So if I do indeed have a server on the network, I'll disable the routers DHCP service, and have the server, which is always a static IP, run it's DHCP to "rule the network". DHCP service from a server being far more reliable and robust than a routers basic DHCP service.

AMPLIFRIER · Post by **AMPLIFRIER** » Wed Mar 24, 2004 10:07 am

Originally posted by mnosteele52
AMPLIFRIER I think you have already mentioned the problem.... Panda. It seems to be the common denominator, just uninstall Panda and see if the problem goes away, if so you found it if not you atleast eliminated it as a culprit.

When you can't connect what IP is given when you use the command prompt ipconfig /all? Set your NIC duplex mode to auto and undo any tweaks you have done to your registry involving TCP/IP.

Let us know how it goes.

its not panda.....i had 2 systems doing this at one point.
the other system has had a fresh load of the os on it and panda is now running on it without a hitch.

i have now performed an "install in place"

see how it runs after today.....if it still acts up....im gonna break down and reinstall on the lappy too.

and in reply to cyber.....yes i still had the issue after running the netsh command.

thanks all

AMP

Sid · Post by **Sid** » Wed Mar 24, 2004 11:18 am

Originally posted by TonyT
awesome!

Now I can have my server set to static.

I figured this was common knowledge, or I would have mentioned it earlier. Servers definitely should not be configured with a dynamic IP.

Not sure what to tell you on this AMP. Have you tried different dns servers yet?

cyberskye · Post by **cyberskye** » Wed Mar 24, 2004 1:25 pm

If ipconfig fails to initialize, I believe your stack is hosed. Something has your stack/network driver corrupted/locked. Could be software, could be stuff 'left behind'.

Good luck,

Skye

Post by **YeOldeStonecat** » Wed Mar 24, 2004 2:07 pm

You had 2x other systems do this at one point? On the same network?

Hmmm...something must be a common denominator here. Some software package, oddball network printing software, oddball NIC drivers, are you using wired or wireless?

Are you running a server on the network that is running DNS? Or just a simple peer to peer, that forwards DNS through the router to your ISP's DNS servers?

Sid · Post by **Sid** » Wed Mar 24, 2004 3:34 pm

Is UDP port 53 open?

dirtyangus · Post by **dirtyangus** » Mon May 16, 2005 1:29 pm

Amplifrier, did you ever resolve your DNS issue? I'm assuming you probably did a clean OS reload. The answer to all ills...
Got the same prob and found yours by Googling. Ping an external IP ok, but not the url, only on 1 box out of 4 on the wired LAN. All using static IPs. DNS servers are hard coded in (yes have used more than one as the primary). Other 3 boxes no prob with DNS. I can stop and restart the DNS client service, and all is well. Very intermittent (once every couple days). Not sure if it is related to inactivity or not, but will watch for this. Running WinXP SP2, Norton AV, and Zonealarm behind a Linksys router on DSL.

dirtyangus · Post by **dirtyangus** » Mon May 16, 2005 1:33 pm

...oh one other thing, my ipconfig -all ran ok. Don't get "failed to init" error, so may actually be a different prob altogether.

AMPLIFRIER · Post by **AMPLIFRIER** » Mon May 16, 2005 2:18 pm

i do believe the issue was panda.......however i dont even have any of that equipment anymore.

i have since seen panda cause some apps to break and cause i-net connection issues because of their firewall.

thanks for asking though

sorry i didnt post a solution to this.

AMP

berrybry · Post by **berrybry** » Tue Sep 27, 2005 4:38 pm

TonyT wrote:How can this be?
I did not know that you could config a router to use DHCP for just one client and not the others that are hooked up to it.

That means that the one not using the DHCP (the desktop) must be set up with a static ip address, and that this setup must also be config'd in the router as well. But I do not think that a router can use both at the same time, it must either use DHCP for all or Static for all.

You can have both static and dynamic IPs on a router. Set the DHCP pool to some rage like 100 to 150. This will use DHCP assign ip addresses to 192.168.0.XXX where XXX is 100-150. (assuming you use the standard 192.168.0 private ip range) Then you can assign any valid IP address not in that range staticly.

I do this all the time for print servers. You dont have to remap everytime the ip changes and i dont have to deal with dynamic IP addresses either.

Post by **YeOldeStonecat** » Tue Sep 27, 2005 4:54 pm

berrybry wrote:You can have both static and dynamic IPs on a router. Set the DHCP pool to some rage like 100 to 150. This will use DHCP assign ip addresses to 192.168.0.XXX where XXX is 100-150. (assuming you use the standard 192.168.0 private ip range) Then you can assign any valid IP address not in that range staticly..

Sounds similar to what I said waaay up above in this thread...

YeOldeStonecat wrote:I do that all the time. I usually let workstations obtain their IP auto, and I'll have servers using static IP's. You assign static IP's outside the DHCP's normal scope. IE...if DHCP hands out IP's from 192.168.0.100 to 192.168.0.200, you pick something like 192.168.0.10 - 192.168.0.99 for servers or HP print servers. The server are static, the workstations are obtaining via DHCP. You can run a DHCP service while still having static IP workstations/devices on the same network.