Dns not resolving

[Nic]

Well, here is the Deal,

My router has all the external IP's like 27.212.15.x
which are External ips. My servers all have Fake ip's
like 10.10.10.1. as do all my clients on the network. All
of the external IP's point to my servers internal address
through the router. When I try to connect from a client
machine on my network to my ftp site it works as it would
be using the internal address of the ftp site. If I go to
the server that is the AD controller and the DSN server, I
can't reach the ftp site for some reason. It is strange.
If I am out of the office, I can enter ftp.xxxx.com with
not a problem. It is just this one server which I cannot
access the #'s.. I think I am missing something that is
for sure. I hope that this makes more sense

Nic

 

[Kevin D. Goodknecht [MVP]]

In

Well, here is the Deal,

My router has all the external IP's like 27.212.15.x
which are External ips.

But you can't access your internal machines by these addresses from an
internal machine.

My servers all have Fake ip's

like 10.10.10.1. as do all my clients on the network.

These are not fake IPs they are private IPs that are publically non-routable
addresses.

All

of the external IP's point to my servers internal address
through the router. When I try to connect from a client
machine on my network to my ftp site it works as it would
be using the internal address of the ftp site. If I go to
the server that is the AD controller and the DSN server, I
can't reach the ftp site for some reason. It is strange.
If I am out of the office, I can enter ftp.xxxx.com with
not a problem. It is just this one server which I cannot
access the #'s.. I think I am missing something that is
for sure. I hope that this makes more sense

that means that your port forwarding is working but port forwarding does not
work from the internal clients.

If you run nslookup from the clients on the name does it return the private
address?

I'm going to make a guess here your server has your ISP's DNS address on its
NIC?
Point it to its own private address for DNS.

Can you post the ipconfig /all I asked for ?

 

[Nic]

You are right and my DNS primary is my server and the
secondary is the ISP. This is an internal DNS.

This is my main server and I am trying to reach another
addresses machine by ftp.xxxxx.com. Here is the ipconfi
all


Host name: xxxx
primary DNS Suffix: xxxxx.com
node type: broadcast
Ip routing enabled: no
wins proxy: no
dns suffix search list: xxxxx.com

ip address: 10.10.10.212
subnet: 255.255.255.0
gateway: 10.10.10.1
dns 10.10.10.212
24.222.0.33

 

[Kevin D. Goodknecht [MVP]]

In

You are right and my DNS primary is my server and the
secondary is the ISP. This is an internal DNS.

This is my main server and I am trying to reach another
addresses machine by ftp.xxxxx.com. Here is the ipconfi
all


Host name: xxxx
primary DNS Suffix: xxxxx.com
node type: broadcast
Ip routing enabled: no
wins proxy: no
dns suffix search list: xxxxx.com

ip address: 10.10.10.212
subnet: 255.255.255.0
gateway: 10.10.10.1
dns 10.10.10.212
24.222.0.33

Remove your ISP's DNS run ipconfig /flushdns and try the lookup again.

you can use your ISP's DNS as a forwarder for your local DNS read this:
300202 - HOW TO: Configure DNS for Internet Access in Windows 2000
http://support.microsoft.com/?id=300202&FR=1

 

[Michael Johnston [MSFT]]

Can you reach the FTP site from the DC by IP address?

Thank you,
Mike Johnston
Microsoft Network Support
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