Eicon Networks DIVA LAN ISDN - Manual (Page 134)

Chapter Nine: Advanced Installations IP filters 134
When done, the filter stack should look like this:
Blocking web surfing
This example shows how to block computers on the local LAN created by the DIVA LAN ISDN Modem from
surfing the web.
Web traffic is carried by the HTTP protocol. Therefore, to stop web access, this protocol needs to be dropped
for all outgoing traffic.
A single filter needs to be defined. Place this filter in the third position in the stack.