Wireless Internet network for the enterprise

[zefferno () gmail com]

Hey all,

We are in the process of checking the needs to implement Wireless Internet access for company guests. The maximum 
number of users is about 50 at the same time.

We will use a some gateway (or a box) and Access points located at our building.

We are looking for the following requirements:

1. Limiting access only to specific services, such as HTTP, HTTPS or SMTP.

2. Limiting access to internal IP's. Users who are connected won't able to reach any other connected user. 

3. Limiting access to specific time range and days at week.

4. QOS - some kind of traffic shaping to prevent users from flooding the bandwidth.

5. Authentication - we are not sure about this because we don't want to make it difficult for guests. What do you say?

6. Reporting - real time monitoring and/or logging of outgoing traffic.

We searched for Linux based gateways and we found the SmoothWall and IPCOP projects. Do you know any other free 
projects? 

Do you have suggestions for specific appliance/box?

Much Thanks.

Regards,
Zefferno.