We are having a internet cafe with guests walking in and out. We would like to keep an eye on browsing traffic on LAN 192.168.2.0/24, because we don't want guests to visit wrong websites. In such situations, we can remove people from our internet cafe. This could happen rarely, but we want to prevent this on-time.
We have Windows clients generally. We need some kind of overview, containing URL's on client PC's with associated host name. Which can be accessed on the same subnet, from Linux or Windows. The disadvantage in this environment is: the cooperation don't want to make any changes in the router configuration. And this makes me curious if there is someway to accomplish this from another system, without making client-side changes and/or router changes.
What do we need for this?