friends.. i have a client.. who is big in number and have multiple sites connected via P2P links... all sites connect to internet via TMG/ proxy... now is there a way to find how many total number of computers connected to their whole network.. and with the other relevant details to computers like IP/ config etc.

or may be a tool which we can run in the network.. which can give us the above information but i think the problem will come is that the tolol will do some kind of broadcast and router's wont pass the broadcast to other sites. so in this case i thnk we have to look for a way to find out how can we reach all the computers of the network. sites are all over the country.my first guess would be to use TMG / proxy but may be we can get some other ideas from champs here. plz advise