Discover every device on my network somehow?

[Bes]

Hi

I am running Arch so need a method that works on Linux for this:

I have a Solaris Ultra 60 server plugged in downstairs but am unable to hook it up to any device to see what is going on etc with ease and have forgotten the IP I assigned it so cannot telnet to it. Is there anything out there that will discover every device on my network and list its IP address? The ARP table on my router has the following (No idea if this is of any use to anyone at all as I thought it was only supposed to get the address of switches by looking at their MAC address):

192.168.1.5 Complete 00:191:63:3A:A7 br0
192.168.1.10 Complete 00:A0:C9:45:EA:0C br0

the .10 address being the PC I am using now (so why is it even in here?), no idea what the .5 address is (Nothing responds there though) and everything else bar my NAS drive is assigned a DHCP address. Is there any method of auto discovering devices at all?

Thanks

 

[Bes]

If you can install nmap on your arch box you should be able to do something like,

nmap -O 192.168.1.* and that will look up the OS's on that subnet.

Prolly the easiest way.

Pacman found nmap in its package list

Ok It appears it is on the .5 address but all ports on the box are closed for some reason

Ah well thanks it worked a treat

 

[Bes]

Not much you can do then really, maybe hook up a old skool console cable to the box and get a term via that.

Nope I'll just have to find and dig out the Sun keyboard (Damn them and their silly non-standard standards) and lug my monitor down there and see what's occurring. :/

Thanks anyway!