On 10/24/05, Frimmel, Ivan (ISS South Africa) <[EMAIL PROTECTED]> wrote: > From what I can recall from IP 101 I did years ago .. Pinging a host > will still resolve an IP to MAC (ARP), the host may not echo the ICMP > back.. But you should still get an ARP table entry on the requestor.. Am > I wrong?
At which point we need do nothing further as I already check the ARP table on the firewall. If it's seen _any_ activity from the machine in question to or through the firewall in the last few minutes, it's considered online. I'm not going to start pinging devices - doing so would be very shortsighted. In the case of a home network with less than a dozen machines with DHCP, we could make it relatively responsive, but with a ping timeout of 1 second PER machine, on a larger network, this is extremely impractical. --Bill --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
