> in my firewall logs I see a lot of echo-requests within the internal network. Of > course, the simplest answer to these events is that pings are causing these events. > But on these machines definitely no pings are startet to that times.
An echo-request IS a ping (or at least part of it). There is no difference. When you 'ping' something you are just using the ICMP protocol to try and contact a certain host. This is done with an echo-request (a specific type of ICMP). --danielrm26
