Help make a wireless network

[4lbus]

Hello to all and thnx for reading this your answers would be more than welcome!
First of all i want to cable networks together wireless. I am running two cafe bar that are across the street... My thought is to buy 1 good router( i am thinking that CISCO 876W-G-E-K9 WIRELESS DSL ROUTER ISDN could be that) because i want to make a hotspot also so that people can drink cafe and enter internet but with a given password and username that they will enter at their internet browser when they are connected with my wireless network. Also i want to manage somehow so they can browse internet as fast as possible but don't download more than a predifined number...Also i want to connect to that router 2 pcs at then other cafe so they can have internet and access the network but i want to do that with another router perhaps or some sort of that device so they don't need each one 1 wireless card. I want to connect them to a router p.e throught ethernet and then that router is some sort of client at the cisco router so they are in the same network... Any thoughts ? can the other router be LEVEL ONE WBR-6000 N-ONE 300MBPS WIRELESS BROADBAND ROUTER or maybe US ROBOTICS USR805464 WIRELESS NDX ROUTER or maybe is there any other router better for this job?
Thnx for your time reading this huge article :) As i said any solutions are welcome :)

[mccoffee]

Two router would be the most secured way keep the buisness side wired on a seperat network ,and subnet.

With the wireless see if that router has qos most of them do you can limit the amount of http ,and ftp traffic to that network.

As far as products go read some reviews see what it lacks for some ,or doesn't for others.

[NetworkMeUp]

Ideally, only one router should act as a Dynamic Host Configuration Protocol (DHCP) server. You can choose which one, but generally it should be the one directly connected to the DSL/cable modem. Disable the DHCP server on the second router.

Or you can carefully configure them both to act as DHCP servers, but use different address ranges of the same address prefix defined for the subnet. For example, I could configure the wired router to hand out DHCP addresses in the range from 192.168.0.50–192.168.0.99, while configuring the wireless router to serve out addresses in the 192.168.0.100–192.168.0.149 range. The catch here is that the default address range for the two routers may be different, especially if they came from different manufacturers. If they are, you'll need to change them so that they're both part of the address range being used on the home network subnet.

Configure the second router to be a bridge, not a router. Not all routers will do this, however. Check the software for the two routers you have, and if only one of them can act as a bridge, set it up to do bridging and connect the other one to the cable/DSL modem.

Hope this helps!

[YeOldeStonecat]

Will you have any "office computers" that you will manage the business with? If so...you'll want to keep those separated from the rest of the network. I would choose to do that using a managed switch that can create port based VLANs. Have VLAN1 for the office computers, VLAN2 for the rest of your open wireless clients. That way they cannot get into your office PCs...or infect them with trojans/worms/viruses that often spread across networks by themselves.

For your primary router...at the cable connection..I don't recommend using off the shelf home grade routers for this job. You state you wish for a captive portal...you may want to consider some of the ones that are available for some linux distros...build your primary router by installing one of those distros such as IPCop or PFSense. They have captive portal options. DD-WRT is another popular one...many people install those on some Buffalo or Linksys routers..but it also supports many mini-ITX boxes. It also has captive portal options such as Sputnik or ChiliSpot.

For your wireless "point to point" to cross the street..some options here..
http://www.fab-corp.com/