Again from IP 101(many years back so I could be wrong ) What about pinging the broadcast .. This should highlight some less talkative ips on the local subnet ? And localise icmp traffic .. Ideal for small networks ? ;)
-----Original Message----- From: Bill Marquette [mailto:[EMAIL PROTECTED] Sent: Monday, October 24, 2005 3:42 PM To: support@pfsense.com Subject: Re: [pfSense Support] Diagnostics: DHCP leases v0.88 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] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
