Wireless connection unable to browse Internet

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Desktops
Management
Microsoft Windows
Networking
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SQL Server
Wireless
I run a Windows 2003 Server LAN, with Windows XP clients. All machines are members of the LAN and Group Policy is in place. The LAN uses DHCP with DNS servers and gateway specified. Notebooks that are part of the domain, when connected to the network (wired or wireless)have no problems accessing and browsing the Internet. When these users travel and the hotel offers wired hi-speed, no problems are encountered. However, when users attempt to use the wireless to access public (or home) systems, the wireless interface connects, but the user is unable to browse the Internet. I have checked all registry settings that I can find, and when the user is connected to the public site, ipconfig indicates all the correct information. What am I doing wrong, or where shoud I check? I thank you for your help in advance, as I am really stuck.

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Are you able to ping via the wireless when connected outside the office? Start with the gateway, then DNS Server (whatever IPconfig/all returns) finally a web site or e-mail server on the Internet.

What is your internal wireless security like? Are you using GP to enforce it? If so, what are the related policies?

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  • Csmric
    I can ping the gateway/router/dns server/dhcp server. I can ping by quad address outside sites. I cannot ping outside sites by name (e.g., www.whatever.com). I know this indicates DNS problems, but cannot find anything in the registry or settings to prevent using the DNS server that is indicated by ipconfig/all. My internal wireless security is 128-bit WEP, shared key. Also, internal wireless routers/switches are configured to only connect with listed MAC addresses. These settings are configured individually and not by GP.
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  • BobYoung
    You said that you?re using DHCP, so maybe I shouldn?t ask this question, but I don?t want to overlook the obvious. Is DHCP enabled specifically on the wireless network interface on the notebooks? Remember that each network interface has its own TCP/IP Properties settings, including its own Alternate Configuration settings. For example, I have one client that has a network that uses static IP. So, on the wireless network interface, I have the Alternate Configuration set up for DHCP so their notebooks will work with wireless connections outside the office. From your description of the problem, my first thought is that DHCP isn?t enabled on the wireless interface, just the wired interface. I?m sure you know how to check it, but for the sake of other readers, you check it like this: (1) Right-click on My Network Places and select Properties. On the specific network connection, right-click and select properties. In the box that opens, highlight ?Internet Protocol (TCP/IP)? and click on the Properties button. Examine the settings on both the General tab and the Alternate Configuration tab.
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  • Csmric
    DHCP is enabled for both wired and wireless interfaces. Thanks for the thought and if you think of anything else, I would be very grateful. I have been wrestiling this problem for several weeks.
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  • BobYoung
    With the additional information in your other reply, now I'm wondering about the DNS setting on the wireless network adaptor. DNS can be set to a static IP even if DHCP is enabled. Are you set for "Obtain DNS server address automatically" on both the General tab and the Alternate Configuration tab?
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  • PhilReed
    This problem is definitely a DNS lookup issue. To test - at a command prompt type nslookup it should return a default server (i.e you dns server) then type www.google.com to lookup the dns entry. If you do not get a decent response to either of these inputs then, whilst still in nslookup type server and the ipaddress of an alternate DNS server. Then do a lookup for www.google.com again. If this works change the DNS server in your network TCP/IP settings for the wireless connection.
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  • Submarinenet
    I had the same problem. You need to edit the dialup wireless network setting in the Control Panel. On XP boxes, select the connection for the EDVO (wireless) Modem, right click and select properties. Select the Networking Tab and edit the properties of the TCP/IP settings. Select the Advanced Properties button and look for the "Use default gateway on remote network" checkbox. Reverse the setting in this box and you should be fine. I hope this helps.
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  • Stevesz
    You seem to have tied this down to a DNS problem. Are your laptops picking up the same DNS server as your desktops, or do you use a separate subnet for the wireless connections? Give a laptop a static IP address, and give it the internal DNS IP address. Test. If it still fails to resolve the names, take a look at the router and ensure that DNS is allowed to pass through. If it is not, allow it. Test again. If successful, try it using DHCP. If successful, problem resolved. If not try attaching the laptop to your internal network to see if it works in that configuration. If so, you might want to consider changing the channel used by your wireless. There may be some interference causing a problem. Still have a problem, change the router out for another one.
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  • ITCrossPull
    I had a problem with dns on xp machines, See Microsoft article: http://support.microsoft.com/kb/318803 Try to flush your dns then stop the dnscache on the xp machine. Hope this helps.
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