Lost Internet connection

[Guest]

Working with Server 2003 and 2K workstations. The entire network has lost
the ability to connect to yahoo. com. All other internet acces is fine.
I feel this is the tip of an iceberg. Any suggestions as to troubleshooting?

 

[Ray Costanzo [MVP]]

It sounds as though it is just a hostname resolution problem.

When a computer attempts to go to yahoo.com, something must tell the
computer what IP address = yahoo.com. This name resolution is typically
handled by a DNS server, either on your network or at your ISP. Try this as
step 1:

Open a command prompt (cmd.exe) and enter:

ping yahoo.com

You should get a response like:
1. Pinging yahoo.com [66.94.234.13] with 32 bytes of data:
[rest is irrelevant - don't worry if you get a timeout]

or
2. Ping request could not find host yahoo.com. Please check the name and
try again.

Which response do you get?

Ray at work

 

[Guest]

The ping went 100%. I tried typing the 66.94.234.13 on the IE address line
and got the host not found message. Where in the server do I find the DNS
problem.

cn

It sounds as though it is just a hostname resolution problem.

When a computer attempts to go to yahoo.com, something must tell the
computer what IP address = yahoo.com. This name resolution is typically
handled by a DNS server, either on your network or at your ISP. Try this as
step 1:

Open a command prompt (cmd.exe) and enter:

ping yahoo.com

You should get a response like:
1. Pinging yahoo.com [66.94.234.13] with 32 bytes of data:
[rest is irrelevant - don't worry if you get a timeout]

or
2. Ping request could not find host yahoo.com. Please check the name and
try again.

Which response do you get?

Ray at work

Working with Server 2003 and 2K workstations. The entire network has lost
the ability to connect to yahoo. com. All other internet acces is fine.
I feel this is the tip of an iceberg. Any suggestions as to
troubleshooting?

 

[Ray Costanzo [MVP]]

So you're able to resolve the domain name? (Not that yahoo.com and
www.yahoo.com are not the same host.)

Are you sure that there isn't a "net nanny" system of some sort preventing
access to this site? Is it only www.yahoo.com (216.109.118.70) that you
cannot get to? What about other commonly blocked sites like
www.hotmail.com?

Ray at work

The ping went 100%. I tried typing the 66.94.234.13 on the IE address
line
and got the host not found message. Where in the server do I find the DNS
problem.

cn

It sounds as though it is just a hostname resolution problem.

When a computer attempts to go to yahoo.com, something must tell the
computer what IP address = yahoo.com. This name resolution is typically
handled by a DNS server, either on your network or at your ISP. Try this
as
step 1:

Open a command prompt (cmd.exe) and enter:

ping yahoo.com

You should get a response like:
1. Pinging yahoo.com [66.94.234.13] with 32 bytes of data:
[rest is irrelevant - don't worry if you get a timeout]

or
2. Ping request could not find host yahoo.com. Please check the name and
try again.

Which response do you get?

Ray at work

Working with Server 2003 and 2K workstations. The entire network has
lost
the ability to connect to yahoo. com. All other internet acces is
fine.
I feel this is the tip of an iceberg. Any suggestions as to
troubleshooting?