UNABLE TO CONNECT TO ADSL BROADBAND ROUTER

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Networking
Hi One of our customers has Small Business Server 2000 and ISA 2000 installed. They have access to the Internet and network resources work ok. DHCP is assigned via the server and all DNS tests show as passed with no errors in the event log either. The server has 2 network cards for both internal and external connections. The broadband router is attached directly to the external card. The internal NIC has the following settings:- IP OF NIC -192.168.16.2 SUBNET - 255.255.255.0 DNS - 192.168.16.2 The external NIC has the following settings:- IP OF NIC - 217.35.109.233 SUBNET - 255.255.255.248 DEFAULT GATEWAY - 217.35.109.238 DNS - 192.168.16.2 When configuring the internet connection wizard in SBS2000, we have obviously input the DNS settings provided by the ISP which shows on the 'forwarders' tab in the DNS console as they should. DHCP is disabled on the router. However, we have never been able to log into the router remotely, or directly from the server. We connected the router directly to a laptop (which we gave a static ip address) and were able to log into the router. When we connected the router back to the server, we can ping the router but not log in. But, after a short time we are unable to ping the router from the server. We have checked and double-checked router settings and believe all is as should be. We think it may be to do with the ISA firewall, particularly as the web browser page when logging into the router from the server shows 'The page cannot be displayed' and 'HTTP 502 Proxy Error - Host is unreachable. For more information about this event, see ISA Server Help. (10065).' If we set the laptop to obtain an ip address automatically, it gets assigned an ip address, we think is from the router which begins with 81.x.x.x We can't understand this as we have disabled DHCP on the router! There is no problem adding PCs to the network. Finally, whether this is relevant or not. If we do a simple query test in the DNS console and a recursive query test, they both fail. Yet, DNS tests in a command prompt via dcdiag and netdiag, and the event log all show up ok. Many thanks to all who took their time to read and understand our issue. Thank you
ASKED: May 27, 2005  6:53 PM
UPDATED: May 30, 2005  8:34 PM

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If you gave real ip numbers then 217.35.109.238 is unpingable and therefore the router has no gateway.

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  • Netkey55
    first of all if you set a static ip on pc, it should be in the same lan segment of the local ip of the router...the private ip should not be the same as the dns...when you set the pc to obtain ip automatically it will definitely receive and ip address but not from the router but from the modem because the router only acts as a switch once you disable the dhcp...also sir, i do think that there's no need for you to setup an ICS if you have a router coz if the router is actually a switch,a firewall and a gateway by itself if it is just configured properly...it also will act as a DHCP server so in that case, you only need 1 ethernet card on your pc and you'll just have to plug the other pc's to any port on your router and all of them will definitely be online...and if your concern is for expansion of the network, you can actually just plug a switch to the uplink port on the router and your pc's to the switch...NOW, if the router that ur saying is a modem-router then there is a different configuration on that 1 but not too different if you have a separate external modem...also check your browser settings under internet options/connections(you will see in their your concerns about proxy settings)...OK...hope these things have helped you
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