problem with sharing internet in wireless network using dsl-2640u

5 pts.
Tags:
DSL-2640T
Network connectivity
Routers
Wireless Network
Hi I have D-Link dsl-2640u modem.i've connected it to my pc with cable and i can access internet but i can't access internet in wireless network.i've tried to connet with a notebook wireless I don't know what to do! help me please.

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As usual with this sort of problem, there are a number of questions, and the fix for this problem depends on the answers.

Have you set the SSID and WPA keys, and set the same on the notebook ?
Does the notebook connect to the wireless network OK ?
Does the notebook then get an IP address from the wireless router ? This may be different from the IP address range for the LAN, if the router treats these as separate networks.
Can you PING the router (this will be the default-gateway address given to the notebook by the router) ?
Can you PING any other PCs on the wired network ?
Can you resolve names (DNS) ? Try a DOS window and do ‘nslookup itknowledgeexchange.techtarget.com’ and see if it returns an IP address.

Any of the above items will point to the problem cause. If all of them work, then it is something more complex in the router config. When I looked on the D-Link website, there seems to be a software upgrade for the -B model, maybe there is one for yours. If there is then try loading that, and repeat the tests. Also try to do a factory reset on the router, so there is none of your configuration. There work straight out of the box (you may need to add the ADSL username and password). See if that then cures the problem, and make one change at a time to where you want it to be, then you will know what broke it.

Post a discussion reply here with your findings, and we can see what we can do to help further.

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  • Kelvinsw
    I will suggest switch off any firewall or security settings on your DSL modem. Once you can connect Internet via wifi, you can start work on your secuirty settings...
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