Nate Amsden wrote: > > Are there any other tools that reliably tell whether a machine is up or > > not? > > try portscanning as well as OS identification: > > nmap -O -p 1-512 XXX.XXX.XXX.0/24
I'm curious, but isn't this redundant? OS identification works by portscanning, or am I missing something here. The command above only limits the ports to the first 512. I tried it in any case, without luck. > see if that helps .. or if you just want to see who is up: > > nmap -sP XXX.XXX.XXX.0/24 Tried that already, but unfortunatelly it doesn't work. I'm using nmap 2.3 (this is on a RedHat 6.2 machine), but I see that 2.54 is out. Thanks, Viktor -- Viktor Rosenfeld WWW: http://www.informatik.hu-berlin.de/~rosenfel/ Geek Code (3.1): GCS/SS d-@ s+: a20 C++@ UL++$ P+ L+++ E--- W++ N++ o? K? !W O? M? V? PS++@ PE+(-) Y+ P?(+++) t+ 5+ X- R? !tv b+ DI+ D- G e>+++ h-- r- !y+
