Limit clients usage in wireless network

[andyCape]

Hope this is the right forum for my question.

I will be starting a guest house shortly and I intend to provide wireless Internet access from the guest rooms. I'm facing a couple of issues here:

1. how can I limit the usage (in particular download) of the clients?
   with a 10GB per month contract I cannot afford that folks download an excessive amount e.g. videos, the service is intended as a nice add-on but not an internet cafe. A higher cap also doesn't help much. Should I measure client's usage and charge them? (quite an admin effort I think)
2. how can I best manage the ever changing client IPs?
   Currently I maintain access of machines in our household by entering the MAC addresses into the router, I'm not a hotspot, but with new guests every couple of days that'll be an admin nightmare, old MACs out, new MACs in.
3. how can I restrict access to certain sites?
   I don't want people to access child porn and other crap (there's probably also the question of liability on my side since the access originates at my router). Do I need to maintain a log of which client access which web site?

I guess these are questions any hotel or guest house business must have found answers for already, thanks for any advice.

kind regards
andy

 

[spiderz]

ok, take a look at something like pfSense or ipCop. (dedicated firewall servers, free).

They should be able to do dhcp (allocation of ip addresses), bandwith/user managment, ect.