If I want to find out how the hostname of a remote linux machine on my LAN is, how can I achieve this given I don't have access via SSH etc.?
Probably depends if linux is part of a WINS domain I suppose.
asked Mar 14, 2013 at 9:14
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What information do you have?– David SchwartzMar 14, 2013 at 9:20
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Only the IP address of the machine.– JohnnyFromBFMar 14, 2013 at 9:43
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3 Answers
You'd have to specify the term hostname more closely. If you are looking for the name as it is known to the DNS server that you don't want to use - there is no way of knowing except for actually asking that DNS server.
If you are simply guessing, nmap can be of good use. For example, if there is a smbd running on that server, the output of nmap -A might look like this:
Host script results:
| smb-security-mode:
| Account that was used for smb scripts: guest
| User-level authentication
| SMB Security: Challenge/response passwords supported
|_ Message signing disabled (dangerous, but default)
|_smbv2-enabled: Server doesn't support SMBv2 protocol
|_nbstat: NetBIOS name: FOOBAR, NetBIOS user: <unknown>, NetBIOS MAC: <unknown>
| smb-os-discovery:
| OS: Unix (Samba 3.5.6)
| Computer name: foobar
| Domain name: lan
| FQDN: foobar.lan
| NetBIOS computer name:
|_ System time: 2013-03-14 17:02:27 UTC+1
Other services might give hints about the name of the machine as well.
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That would be a solution, of course it depends on a listening smbd deamon. Mar 14, 2013 at 17:18
In the absence of a DNS server, this might work:
traceroute 1.2.3.4
Alternatively, if the server in question is exporting Samba shares, you could do this:
smbclient -L 1.2.3.4
This depends on whether you have a working DNS server set up on your LAN that has the necessary information. If it does, this command should do what you need:
nslookup 1.2.3.4
or
host 1.2.3.4
Finally, another useful command is
arp -a
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@Ian, yes I finally read the title and not only the body of your question and figured that out. Sorry. Anyway, the
tracerouteandsmbclientoptions might work.– terdonMar 14, 2013 at 14:45 -
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Fingerd (and xinetd) are easy to set up and require no maintenance.
$ finger [email protected] [10.3.0.3:79] Welcome to Linux version 3.5.7-12-tryggve at tryggve.lan ! (...)
answered Mar 14, 2013 at 17:38
