DP230
asked on
Problem with DNS server
Dear Experts, please help to solve our scenario:
- Normally, we use google public DNS (8.8.8.8) for our LAN users, then they can go to our website (let's say in IP: A.B.C.D - www.website.com) properly
- When we change the DNS of LAN users to our local DNS (the same domain - website.com), they could not go to that website anymore although I specified its DNS record (www) in the DNS server.
Do you have any idea please?
- Normally, we use google public DNS (8.8.8.8) for our LAN users, then they can go to our website (let's say in IP: A.B.C.D - www.website.com) properly
- When we change the DNS of LAN users to our local DNS (the same domain - website.com), they could not go to that website anymore although I specified its DNS record (www) in the DNS server.
Do you have any idea please?
ASKER
Hi, yes we can ping it, it showed the public IP address of web server (A.B.C.D); when we check "nslookup" www.website.com, it also showed the correct public IP; but when access website via web browser, we got connection_refuse error
Do you use SSL imean https, Have you checked from another browser. I mean if you use chrome, then check it from Firefox and IE
ASKER
No, we use normal HTTP, also tried with other browsers but NO luck :(
connection refused error prompt if you are going to access wrong destination
it seems that is not a DNS issue. normally connection refused error means you are accessing somewhere else instead of correct destination.
is your NT Domain is also website.com ?
add a host entry and see whether web site is working.
a.b.c.e www.website.com
C:\Windows\System32\driver s\etc\host s
it seems that is not a DNS issue. normally connection refused error means you are accessing somewhere else instead of correct destination.
is your NT Domain is also website.com ?
add a host entry and see whether web site is working.
a.b.c.e www.website.com
C:\Windows\System32\driver
Just add the same records that you have in public DNS zone to local DNS zone such as the website A record
ASKER
Hi, yes our NT domain also is website.com. Also added entry in hosts file but no luck
- In case of DNS local:
When we issued nslookup "website.com" -> return local DNS server
issued nslookup "www.website.com" -> return public IP of web server (correct)
- In case of Google DNS
both return correct public IP of web server
we have to maintain the DNS local, because we are in Active directory environment
- In case of DNS local:
When we issued nslookup "website.com" -> return local DNS server
issued nslookup "www.website.com" -> return public IP of web server (correct)
- In case of Google DNS
both return correct public IP of web server
we have to maintain the DNS local, because we are in Active directory environment
SOLUTION
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Do you have a PC which is not belongs to your domain. so, try from that PC with your local DNS.
by the way do you use a proxy server for your LAN internet access.
by the way do you use a proxy server for your LAN internet access.
ASKER
Hi,
Make sure there is nothing i.e. proxy or firewall blocking the connection --> Nothing is blocking the connection
I take it a tracert passes through fine all hops okay? --> Yes , we can trace route to that web server
Can you get to the website from the DNS server itself? --> No I could not
Have you flushed the DNS on the client you are connecting with? --> Yes, I did it but still could not access web server
--------------
Do you have a PC which is not belongs to your domain. so, try from that PC with your local DNS. --> Yes I tried but still no luch with Local DNS
by the way do you use a proxy server for your LAN internet access. --> No I use Cisco router, all LAN users was NAT through public WAN interface
Make sure there is nothing i.e. proxy or firewall blocking the connection --> Nothing is blocking the connection
I take it a tracert passes through fine all hops okay? --> Yes , we can trace route to that web server
Can you get to the website from the DNS server itself? --> No I could not
Have you flushed the DNS on the client you are connecting with? --> Yes, I did it but still could not access web server
--------------
Do you have a PC which is not belongs to your domain. so, try from that PC with your local DNS. --> Yes I tried but still no luch with Local DNS
by the way do you use a proxy server for your LAN internet access. --> No I use Cisco router, all LAN users was NAT through public WAN interface
SOLUTION
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ASKER
Tough to do with edited data.
Best to use real data, no edits.
Best to use real data, no edits.
ASKER
I could not disclosure our public IP address and domains;
ASKER
Is there any update please? if we change the DNS settings of LAN users to use Google DNS, can their PCs contact with Domain controller (which has the same domain with website) anymore?
No, PCs will not wee domain from Google DNS.
Add a www A record in the YOURDOMAIN.COM zone
Configure website to redirect YOURDOMAIN.COM to www.YOURDOMAIN.COM
Instruct users to open website as www.YOURDOMAIN.COM
Add a www A record in the YOURDOMAIN.COM zone
Configure website to redirect YOURDOMAIN.COM to www.YOURDOMAIN.COM
Instruct users to open website as www.YOURDOMAIN.COM
ASKER CERTIFIED SOLUTION
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check nslookup also