Network Internet connection trouble

M

Mel

I am with a medical clinic and we have a satellite office 80 miles
away. They access our server via a straight T1 line. Our office(SITE
1)'S internal IP scheme is 10.3.25.X. There is linksys router that is
on our side that is connected to a cable modem which goes out to the
Internet.

We have another Cisco router on our side that has two NIC's. The NIC
IP address for the internal ip scheme is 10.3.25.1. The NIC that goes
out to the T1 line's IP address is 11.4.35.1.

The satellite office(SITE 2)also has a Cisco router exactly like the
one at Site 1. The NIC that goes to the T1 line from site 2's router
has an IP of 11.4.35.2. The other NIC on the router has an IP of
192.168.1.210. All of the computers at site 2 have an internal IP
scheme of 192.168.1.X.

My problem is that I cannot get the computers from site 2 to access
the Internet. I can ping the Internet router fine. When I try to go
into Internet explorer and connect it times out. I have made sure that
my connection as far as how Internet Explorer connects to the Internet
is correct. When I try to ping www.yahoo.com it times out. Why can I
ping the router that goes to the Internet fine, but I can't get out
through that router to get to the Internet?

I have programmed site 2's Cisco Router with two IP address Helpers.
The first is 10.3.25.212 which is the address of the server at site 1.
The other is 10.2.3.129 which is the address of our linksys- router
that goes out to the Internet.

I can access computer hard drives from site 2 to site 1 and vice
versa.

The typical network configuration of a computer at the satellite
office is as follows:

IP: 192.168.1.28
Subnet: 255.255.255.0

Default Gateway: 192.168.1.210

Preferred DNS: 10.3.25.212 (site 1's server, has to be this way for
our medical software to work)
Secondary DNS: 66.76.2.130 (ISP server)

We have other gateways also. The other gateways are 10.3.25.1 and
10.3.25.129 for a total of three on the computer.
 
O

Ovidiu Popa

Your network is wrongly IPed. You are using a mixture of private (10.x.x.x
and 192.168.x.x) and public (11.x.x.x) addresses without the proper NATs.

My advice would be to hire a consultant to design and set up your network
properly. Such problems are beyond the scope of this newsgroup (they are not
directly related to Windows XP).

Ovidiu Popa
MVP
 

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