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RE: Internet Access still stopping ... - 10.Apr.2002 9:07:00 PM   
jmargel

 

Posts: 72
Joined: 3.Apr.2002
Status: offline 		btw.. it fixed my ftp problem as well. seems like SP1 fixes a problem that the server has w/ opening ports

(in reply to msgelinas)
Post #: 61
RE: Internet Access still stopping ... - 10.Apr.2002 10:19:00 PM   
msgelinas

 

Posts: 79
Joined: 21.Sep.2001
From: Victoria,BC,Canada
Status: offline
quote:
Originally posted by jmargel:
Try this:

From your internal DNS server, do a nslookup from the command prompt. Does it resolve to the ISP's DNS server? Mine isn't, but I can reach web sites. My email is backing up (my exchange & dns server are the same machines, sitting behind a ISA firewall)

I noticed in my firewall logs, that its blocking port 53 to my ISP's DNS server, yet I have that port open. Please help! I can reach the ISP dns server from my firewall though.
What steps did you do to open the Port for external DNS resolution ?

(in reply to msgelinas)
Post #: 62
RE: Internet Access still stopping ... - 11.Apr.2002 5:13:00 AM   
jmargel

 

Posts: 72
Joined: 3.Apr.2002
Status: offline 		In my tcp/ip properties of my DNS server, I have my ISP DNS listed as the first DNS entry. You'll have to reboot after you do this. Then do a nslookup from a command prompt & you should see your ISP's DNS server. I had to do this to resolve names to IPs since my DNS server is also my exchange server. Otherwise my messages would just sit in the queue.

Also on my ISA, I enabled the DNS query pass-through, pointing to my internal DNS. Not sure if that played a role or not.

[ April 11, 2002, 05:15 AM: Message edited by: jmargel ]

(in reply to msgelinas)
Post #: 63
RE: Internet Access still stopping ... - 12.Apr.2002 5:47:00 PM   
msgelinas

 

Posts: 79
Joined: 21.Sep.2001
From: Victoria,BC,Canada
Status: offline 		So you have an Internal DNS Server that handles the DNS for your LAN then the Internal forwards out to your ISPs DNS Server for Internet resolution ?

[ April 12, 2002, 05:54 PM: Message edited by: msgelinas ]

(in reply to msgelinas)
Post #: 64
RE: Internet Access still stopping ... - 12.Apr.2002 8:33:00 PM   
bouloss

 

Posts: 35
Joined: 14.Mar.2002
From: canada
Status: offline 		Hi
i have found this
http://support.microsoft.com/default.aspx?scid=kb;EN-US;q252432

My internet was stopping because of this
now let see if it works

hope it helps

[Roll Eyes]

(in reply to msgelinas)
Post #: 65
RE: Internet Access still stopping ... - 12.Apr.2002 10:01:00 PM   
jmargel

 

Posts: 72
Joined: 3.Apr.2002
Status: offline 		Yes.. Well kinda.. Here is my setup:

Internet
|
ISA Server
|
Internal DNS Server & Exchange Server (both exchange & DNS are on the same box)

In my TCP/IP properties, on my DNS Server I have the first entry pointing to my ISP's DNS Server. I also have my first gateway as my ISA's internal nic IP. So when I goto a command prompt & type nslookup it will show my ISP's DNS server.

Now, all my clients are have an entry in the tcp/ip properties under dns, pointing to my internal DNS server.

I have a pop3 & smtp rule on my ISA to point to my internal exchange server to allow email.

Hope this helps.

[ April 12, 2002, 10:05 PM: Message edited by: jmargel ]

(in reply to msgelinas)
Post #: 66
RE: Internet Access still stopping ... - 15.Apr.2002 4:30:00 AM   
bouloss

 

Posts: 35
Joined: 14.Mar.2002
From: canada
Status: offline 		Hi . i been reading all the threads all night
trying to figure out how to solve the problem.
My problem is like you all , my internet stop working , web request. MSN , audio stream icq keeps working.
YOu guys can call it DNS requests, or webproxy service. i am not sure.

Did anybody found a solution to this.

I am running 5 machines home behind an ISA server. PLus a web server.
From time to time 5 times a day approx , the internet stop working.

We shell keep this topic alive until a solution is found
Thanks
[Frown] [Confused]

(in reply to msgelinas)
Post #: 67
RE: Internet Access still stopping ... - 15.Apr.2002 4:53:00 PM   
jmargel

 

Posts: 72
Joined: 3.Apr.2002
Status: offline 		Ya know.. there are strange problems out there.. I highly doubt this is related, but users from different ISPs are getting this:

TCP works fine, but UDP is messed up.. When streaming UDP, pings jump upto 1500-2000 ms. Users across the United States have been experiencing this, I am one of them. My ISP has been unable to give me a solution to this problem. Some users have reported after weeks, that its fixed but the ISPs haven't given the solution or know what's caused it.

Click here for more info

click here to download the program to test to see if you have this problem:

UDP packet stream program

In this program, change the delay to 10ms instead of the default he's listed in the readme.txt file.

So far, I'm almost positive that my problem is not the result of what you guys are getting. I replaced an internal crossover cable that I think was bad, which was disconnect a major part of my network. And SP1 fixed the problem with not letting the DNS out.

[ April 15, 2002, 04:54 PM: Message edited by: jmargel ]

(in reply to msgelinas)
Post #: 68
RE: Internet Access still stopping ... - 15.Apr.2002 7:29:00 PM   
BaanMan

 

Posts: 20
Joined: 15.Apr.2002
From: Germany
Status: offline 		Hello Guys,

I had the same problem since some month ! And the past 3 weeks the problem escaltes.
I think the problem comes from the Browsers !

I have change my configuration a little bit and since 5 Days tke problem is away [Smile] [Big Grin]

I have stoppt the ISA - clientconfiguration for Webbrowsers and Firewallclients - also in the Webbrowsers - i have only IE on my maschines.

I have changed my DNS - in the rootdirectorie - tab of the properties of my DNS - Server i have delete my DNS - Server, there are now only the rootservers a. - m.

My Configuration:

Internet
|
Hardwarerouter
|
ISA (only)
|
DNS with AD

Greetings [Cool]

(in reply to msgelinas)
Post #: 69
RE: Internet Access still stopping ... - 15.Apr.2002 8:19:00 PM   
jmargel

 

Posts: 72
Joined: 3.Apr.2002
Status: offline 		Ugh.. went down for me again.. With my setup, i have 5 hubs linked together. When it goes down, I can't ping any machines that are connected to the other hubs, but can ping the ones that are located on the same hub.

As soon as I disabled the external nic, the pings came back. Now how in the hell do you explain that one? I tried a new crossover cable, so I know thats not the problem, and my hubs are indicating that everything is fine.

My internal DNS server was on a different hub than my fileserver & isa server (which those 2 were on the same hub). They are now all on the same hub. I was losing dns to my client for the fact that my dns server was on another hub than the firewall. But when the pings came back, doing a nslookup on my dns server, it still could not resolve dns entried, until i rebooted the isa server.

At this point im looking into replacing both hubs, since I know the hub connected to the one w/ the servers are on, I cant ping the client when this disconnection occurs.

Im clueless.. and my workplace is getting pissed off at me.. MS get a damn patch out already for your isa!

(in reply to msgelinas)
Post #: 70
RE: Internet Access still stopping ... - 15.Apr.2002 8:42:00 PM   
msgelinas

 

Posts: 79
Joined: 21.Sep.2001
From: Victoria,BC,Canada
Status: offline
quote:
Originally posted by jmargel:
Ugh.. went down for me again.. With my setup, i have 5 hubs linked together. When it goes down, I can't ping any machines that are connected to the other hubs, but can ping the ones that are located on the same hub.

As soon as I disabled the external nic, the pings came back. Now how in the hell do you explain that one? I tried a new crossover cable, so I know thats not the problem, and my hubs are indicating that everything is fine.

My internal DNS server was on a different hub than my fileserver & isa server (which those 2 were on the same hub). They are now all on the same hub. I was losing dns to my client for the fact that my dns server was on another hub than the firewall. But when the pings came back, doing a nslookup on my dns server, it still could not resolve dns entried, until i rebooted the isa server.

At this point im looking into replacing both hubs, since I know the hub connected to the one w/ the servers are on, I cant ping the client when this disconnection occurs.

Im clueless.. and my workplace is getting pissed off at me.. MS get a damn patch out already for your isa!
Is the Hub linking limit not a maximum of 4 ?

(in reply to msgelinas)
Post #: 71
RE: Internet Access still stopping ... - 15.Apr.2002 9:01:00 PM   
BaanMan

 

Posts: 20
Joined: 15.Apr.2002
From: Germany
Status: offline 		Hello jmargel

I have in DHCP in Serveroptions my ISA-Box(the IP) as Router under 003.
Do you have ???

Greetings B [Smile] [Smile] nM [Smile] n

(in reply to msgelinas)
Post #: 72
RE: Internet Access still stopping ... - 15.Apr.2002 9:28:00 PM   
BaanMan

 

Posts: 20
Joined: 15.Apr.2002
From: Germany
Status: offline 		I mean the internal NIC IP of the ISA-Box

[Mad]

(in reply to msgelinas)
Post #: 73
RE: Internet Access still stopping ... - 19.Apr.2002 1:06:00 AM   
AxleMunshine

 

Posts: 63
Joined: 13.Jul.2001
Status: offline 		Hi everyone,

just to follow-up on the matter. If you look at my previous posts in this thread, my problem was strickly affecting external requests not being allowed.

Since my last changes, it did not reoccure once. The DNS is very stable and my server has been up for about 2 weeks (or since the day the last IIS cumulative patch came in). Anyway, since then, I added new sites to the multi-homed machine without problem. This means that I added new IPs. So, it does not look like the number of IPs are an issue (or I am pretty lucky).

Until I suffer again I assume that my problem was generated by the incorrect entry in my local DNS located on the ISA server.

However, I have now noticed that if I am inside the network and connect with nslookup to the external DNS (located behind ISA as I am), queries do not work. It has no impact from the inside since from my PC, addresses are resolved by another DNS. Maybe it's normal, because using the DNS FQN, it resolves to the external address? If I connect to the DNS through it's NAT address, no problem. Maybe it's just another DNS config problem, but I can connect to the same machine with its external address for other IP services.

(in reply to msgelinas)
Post #: 74
RE: Internet Access still stopping ... - 22.Apr.2002 10:44:00 PM   
BaanMan

 

Posts: 20
Joined: 15.Apr.2002
From: Germany
Status: offline 		Hi Guys,

System running pretty well - over the tops - I¦m glad ! [Big Grin]

S [Smile] L [Smile] ng B [Big Grin] [Big Grin] nM [Big Grin] n

(in reply to msgelinas)
Post #: 75
RE: Internet Access still stopping ... - 9.Jul.2002 10:18:00 AM   
erdmann

 

Posts: 5
Joined: 3.Jun.2002
Status: offline 		Is this thread dead or solved?
I'm experiencing the same problems here and have no clue (yet)....

Michel Erdmann

(in reply to msgelinas)
Post #: 76
RE: Internet Access still stopping ... - 9.Jul.2002 12:45:00 PM   
tshinder

 

Posts: 47439
Joined: 10.Jan.2001
From: Texas
Status: offline 		Hi Michel,

The thread isn't dead or solved [Big Grin]

The DNS UDP issue is still alive and well. I have intermittant DNS failures for some unknown reason. Someone has to tell me, since they're not evident from the internal network.

Tom

(in reply to msgelinas)
Post #: 77
RE: Internet Access still stopping ... - 6.Nov.2002 5:39:00 PM   
mregier

 

Posts: 5
Joined: 31.Oct.2002
From: Washington
Status: offline 		I just thought I would bring this old post up from the dead. I am having a problem very much like the one described on this thread. I have an ISA server that has our public dns server/records on it that uses server publishing to publish the records to the internet. (this appears to work fine)

Now on the internal side I have another box that is running our sitewide - internal DNS/forwarding to our ISPs external DNS.

Here is the problem - about every 48 hours I lose access to the internet from any of my internal clients (using DHCP). The solution I have for this is to restart the Internal DNS server service - which seems to take care of the problem (for about 24-48 hours) - but I cant really leave at night knowing that everything is going to be fine the next morning...

Please help me fix this problem so I can stop pulling my hair out.
TIA

Marc [Confused]

(in reply to msgelinas)
Post #: 78
RE: Internet Access still stopping ... - 6.Nov.2002 9:27:00 PM   
tshinder

 

Posts: 47439
Joined: 10.Jan.2001
From: Texas
Status: offline 		Hi Marc,

Welcome to the club [Big Grin]

Tom

(in reply to msgelinas)
Post #: 79
RE: Internet Access still stopping ... - 27.Nov.2002 12:18:00 PM   
culmor

 

Posts: 2
Joined: 19.Feb.2002
Status: offline 		Has anyone been able to resolve this issue? I have installed ISA Server in our branch office and all internet access stops until I get someone to disable/enable the internal nic.

I am going to ring MS support if no-one can help me.

Thanx in advance.

(in reply to msgelinas)
Post #: 80

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