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My level of knowledge on networking is moderate.

I have the following scenario:

  1. Our internet connects to the LAN into a normal port (Dlink DS 1008D Switch)
  2. Some of the computers in the office connect directly to above switch.
  3. Running from the switch is a cable that connects a Wireless G access point with another 4 ports.
  4. We realised that when more than 5 computers connect to the internet at the same time, a sixth computer cannot connect (we are assuming that our ISP has allocated only five IP's to us.)
  5. We are trying to solve this by making the Wireless access point a DHCP server. The thought is that the accespoint occupies only 1 IP from the ISP, but that we can connect many more to the network and still access the shared internet connection as the IP's are then locally generated.

What I've done was activate the DHCP function on the access point, connected the cable coming from the switch to the WAN port. It reads the ISP and gets an IP address, it also assigns IP adresses to computers that connect to it, however, we cannot access the internet from those computers, and we can also not see any of the computers that are on the switch.

I'm thinking that the relationship between the switch and the accesspoint is the problem and that I should have the internet coming in straight to the accesspoint and from there to the switch instead of the other way round? Will try this in a while as I cannot disconnect the network right now, but is my thinking right?

Can anybody help by indicating if they think I'm doing something wrong?

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Sounds like a DNS problem, can you set the DNS for one of your machines to 8.8.8.8 (Google's DNS) and see if that fixes it? –  sgtbeano May 21 '12 at 9:44
    
A few things you will want to check out - are the 5 ip addresses you're giving out public or private ones (private ones are in the 192.x.x.x 172.x.x.x or 10.x.x.x ranges), and you'll want to connect the internet facing router to the ap through a non internet port, and with a fixed ip address for the AP, and dhcp turned off –  Journeyman Geek May 21 '12 at 10:23
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