Client computers Internet access

Im a technician of 8 years but have never had to work with servers. I have Server 2003 (Enterprise ed) and 5 connected clients on the intranet. All the clients are communicating with the server without a hitch including printing etc. However, the other day all the client pc's suddenly lost the internet. Internet explorer opens ok on all pc's but after a few secs returns the familiar "server cannot be found" message. I have tried to ping the static ip address the isp provides and this is flawless it comes right back with 0% loss, can ping the server as well.

The server is happily on line (broadband via rj45 modem) while the second lan on the server feeds a router to all the pc's.

Just for info.....This server happily accepts the remote access and dishes out database info to any connected client that wants it. Is there a setting that could have changed this? IP adresses have not been changed on any machine inc server.
spikelyAsked:
Who is Participating?
 
Jay_Jay70Connect With a Mentor Commented:
Hi spikely,

how is the DNS set up on clients and on the server?

The DNS should have forwarders set to the ISP's DNS addresses and the clients should be pointing only to the server for DNS
0
 
mcsweenSr. Network AdministratorCommented:
To easily check DNS try to access

http://64.233.167.99

If Google comes up it's a DNS problem, if not we have to look further in.
0
 
mrenosCommented:
On the clients, do you have enabled the DHCP mode, or you have static ip's on every one ?
0
Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

 
spikelyAuthor Commented:
Thanks for your answers so far. The dns has forward lookup setup and the clients all use the dynamic settings.

There are two network cards on this server as follows:
Connected to adsl modem: Ip 10.10.10.201: subnet: 255.0.0.0 : Gateway "Blank" : dns : Blank
Connected to router that serves client pc's: IP 192.168.16.2 Subnet: 255.255.255.0 Default gateway: Blank

I have put the correct BT nameservers in to the dns forward lookup bit. The server is still happily on line but nothing else is. I have has an mcse log in and he says there is something not right with the rras and suggested I hook up another adsl modem/router and change the ip address of the adsl connected lan. I will try the route of comment from "mcsween" tomorow.
0
 
mcsweenSr. Network AdministratorCommented:
Is the server the default gateway at the clients?  If so the NIC connected to the ADSL modem should have a default gateway too (provided by your ISP)

Without this the server doesn't know how to forward the client's requests to the internet.
0
 
Jay_Jay70Commented:
yes! you have no gateways set at all!
0
 
spikelyAuthor Commented:
Ok. Have tried "mcsween" idea of 64.233.167.99 and google comes up. I have put the default gateway in. All pc'scan ping the server but not the outside world. pc's still cant get on line
0
 
spikelyAuthor Commented:
The server returns a google page with http://64.233.183.99 but the client pc's dont.
0
 
Jay_Jay70Commented:
can you post an ipconfig /all so that we can see the rest of your settings
0
 
spikelyAuthor Commented:
Ok. I have made some changes. I could not find the ip of the modem so i perfomed a hard reset, gave it a static ip of 192.168.16.3 as you will see from the log below. The lan card it plugs into has been given the ip of 192.168.16.23.

before I reset the modem the server was making a dial out connection, I dont see whythis is necessary as the modem is on-line anyway.

So, with these new ip's etc how do I get the server to connect and distribute because when I plug this modem into my laptop i am on line but the server itself cant find the net when i plug in the modem? I have been through the connection wizard but to no avail....

So sorry if this sounds a bit confusing but I really appreciate the help and I am in front of the server for an hour or so.

Here is the log of ipconfig with the modem attached to the server and new ips.

Microsoft Windows [Version 5.2.3790]
(C) Copyright 1985-2003 Microsoft Corp.

C:\Documents and Settings\Administrator>ipconfig /all

Windows IP Configuration

   Host Name . . . . . . . . . . . . : server
   Primary Dns Suffix  . . . . . . . : mcshaws.local
   Node Type . . . . . . . . . . . . : Unknown
   IP Routing Enabled. . . . . . . . : Yes
   WINS Proxy Enabled. . . . . . . . : Yes
   DNS Suffix Search List. . . . . . : mcshaws.local

PPP adapter RAS Server (Dial In) Interface:

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : WAN (PPP/SLIP) Interface
   Physical Address. . . . . . . . . : 00-53-45-00-00-00
   DHCP Enabled. . . . . . . . . . . : No
   IP Address. . . . . . . . . . . . : 169.254.99.8
   Subnet Mask . . . . . . . . . . . : 255.255.255.255
   Default Gateway . . . . . . . . . :
   NetBIOS over Tcpip. . . . . . . . : Disabled

Ethernet adapter Server Local Area Connection:

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : VIA Rhine II Compatible Fast Ethernet Ada
pter
   Physical Address. . . . . . . . . : 00-01-2E-0C-6D-A9
   DHCP Enabled. . . . . . . . . . . : No
   IP Address. . . . . . . . . . . . : 192.168.16.2
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Default Gateway . . . . . . . . . : 192.168.16.3
   Primary WINS Server . . . . . . . : 192.168.16.2

Ethernet adapter Local Area Connection:

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : 3Com EtherLink XL 10/100 PCI For Complete
 PC Management NIC (3C905C-TX)
   Physical Address. . . . . . . . . : 00-0A-5E-59-20-84
   DHCP Enabled. . . . . . . . . . . : No
   IP Address. . . . . . . . . . . . : 192.168.16.23
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Default Gateway . . . . . . . . . : 192.168.16.3
   DNS Servers . . . . . . . . . . . : 192.168.16.3

C:\Documents and Settings\Administrator>
0
 
mcsweenSr. Network AdministratorCommented:
Go to the clients and set their default gateway to the IP address of the NIC on the server that is connected to the internal LAN.  This is NOT the NIC connected to the DSL modem.


On the server you will also have to enter DNS server addresses for the NIC connected to the DSL modem.  You can get the DNS addressses from your ISP.  You can also use 24.92.226.173 as a test DNS server (this one belongs to Road Runner in NY)
0
 
mcsweenSr. Network AdministratorCommented:
Are you trying to use ICS on this server?

Is the internet connection a Dial up or DSL?
0
 
spikelyAuthor Commented:
No I am not trying to use ICS
The internet connection was using a braodband dialup but now the same broadband modem cant be reached when trying to dial out (although its actually connected because im plugging the modem into my laptop so I can type these posts) I must have changed something in the router to prevent this.
0
 
spikelyAuthor Commented:
I have got myself into a complete mess with this, having reconfigured routers & modems then telephoned the isp and got actual dns details and finally running the wizard to set up afresh.......Still nothing in fact the server cannot find the internet but when I plug the modem into my laptop (no switching off or rebooting) my laptop is straight on line?????

Tomorow I have an expert in server 2003 coming in at some expense so once I find out what caused this and what was done to resolve I shall award points accordingly. Such a difference this is to working on xp pro/home/98 systems & networks. Thanks everyone I'll be back after tomorow.
0
 
mcsweenSr. Network AdministratorCommented:
Is your laptop set to DHCP?  This may be your issue.  I notice that you said the NIC plugged into the modem had a 192 IP address.  This is a private address and should not be assigned to an interface that's connected to the internet.  You will either have to change the WAN interface on the server to DHCP (if IP is dynamically assigned) or get the correct static IP info from your ISP for this.

If you are using an internet gateway (you keep referring to a router) then the server will have nothing to do with clients accessing the internet.  Set the client's gateway to the router's internal IP address and enter in the DNS address that your ISP gave you and you will be all set.
0
 
spikelyAuthor Commented:
Before I started messing there was a router problem and a dns problem. Who knows how it all happened but thank you for the help.
0
 
Jay_Jay70Commented:
thankyou
0
All Courses

From novice to tech pro — start learning today.