Problems Setting up DHCP

[dignst01]

I have a strange situation where I am trying to set up a domain on a shared network. I work at a school that shares its campus with another school and with that sharing we share one connection to the WAN. We have been given the 192.168.3.xxx section of IP addresses with a default gateway 192.168.3.1 to get to the rest of the network and out into rest of the internet. Our school has a machine running Windows Server 2008 that we want to act as the DHCP server.

I have had success setting up the DHCP and client computers are able to connect to the server, receive and an address but they are not able to connect to the internet. Using a static IP address and the server as the DNS works but if the settings are assigned through DHCP, the connection does not work.

From the server, I am able to ping both internal and external IP addresses. From the clients, I am able to ping internal IP addresses but not external.

I am very new to networking but feel I have a fairly good basic knowledge of the concepts.

Here are the ipconfig/all read outs from both the server and a client computer:
Server:
Windows IP Configuration
Host Name . . . . . . . . . . . . : Server
Primary Dns Suffix . . . . . . . : SPAS.local
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : SPAS.local
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller
Physical Address. . . . . . . . . : 1C-6F-65-D8-01-8B
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 192.168.3.64(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.3.1
DNS Servers . . . . . . . . . . . : 192.168.3.64
NetBIOS over Tcpip. . . . . . . . : Enabled

Client:
Windows IP Configuration

Host Name . . . . . . . . . . . . : PCtablet
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Peer-Peer
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : mshome.net
SPAS
Wireless LAN adapter Wireless Network Connection:
Connection-specific DNS Suffix . : SPAS
Description . . . . . . . . . . . : Intel(R) WiFi Link 5100 AGN
Physical Address. . . . . . . . . : 00-26-C6-C9-DF-70
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::79ee:dc59:fb2:35d7%11(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.3.200(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Tuesday, January 17, 2012 1:23:57 PM
Lease Expires . . . . . . . . . . : Friday, January 20, 2012 1:23:57 PM
Default Gateway . . . . . . . . . : 192.169.3.1
DHCP Server . . . . . . . . . . . : 192.168.3.64
DHCPv6 IAID . . . . . . . . . . . : 218113734
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-14-49-86-62-00-26-2D-F0-5A-79
DNS Servers . . . . . . . . . . . : fe80::6034:a87a:d52b:8db3%11
192.168.3.64
202.106.196.115
NetBIOS over Tcpip. . . . . . . . : Enabled
Connection-specific DNS Suffix Search List :
mshome.net

 

[iphonogasm]

hi,

check the scope options to ensure that the correct DNS servers are being assigned by DHCP, also, is the DNS server running as a cache only DNS server? or have you forward/reverse lookup zones configured?

also you can use DNS forwarding, forward DNS requests to your ISP.

thanks!