block outgloing traffic > 1 MB

[pille]

hello all

i have multiple IPs and do Service segregation. each service has an own IP.

for instance: 1.1.1.1 is webbserver
2.2.2.2 is rdp server
3.3.3.3 is mail server

for instance on the webserver a page is lets suppose 100 kb of size. there should never be a download or a connection which pulls for example a 10 mb file. how can i limit the transmited data to a certain limit ? and how can i get informed, per email, if something like that happens ?
thx