Translating IP address on a local network

[Neal Campbell]

You  might try using the full directory path for the ping program. I
suspect that you are not getting the full shell path applied to the
cron since it doesn't seem to find it.

Neal

On Thu, May 1, 2008 at 8:56 PM, Sarah Reichelt <sarah.reichelt at gmail.com> wrote:
> >  We have a small network behind a NAT router, with IP addresses either
>  >  set manually or by DHCP in the format 192.168.1.xxx.
>  >  All the computer's are Macs so they also have Bonjour names e.g.
>  >  sarah-mac.local.
>  >
>  >  I have set up a custom web server based on Andre's RevOnRockets. When
>  >  the web server receives a request, the IP address of the requesting
>  >  computer is contained in the socket ID. I would like to be able to
>  >  translate that to the Bonjour name of the requesting computer as that
>  >  would make the logs much more easily read.
>  >
>  >  Is there a Mac shell command or any way of getting this data for
>  >  addresses inside a local network which are not listed on any DNS or
>  >  Directory service?
>
>
>  I'm testing a method that works backwards. I use mDNS to give me a
>  list that contains the computer names. Then if I convert these names
>  to Bonjour names, I can ping then, which always gets the IP address
>  from the name. Then I can store that data in a lookup table to use for
>  converting IP addresses back to names.
>
>  I made this into a standalone and it works fine. So then I set up a
>  crontab entry to have the app run once a day. It runs fine and mDNS
>  gets the list of networked computers, but ping just returns "/bin/sh:
>  line 1: ping command not found". However on the same computer when I
>  run the app manually, it works perfectly.
>
>  There must be something happening when the app runs as a cron job that
>  is messing with it's mind. Hopefully someone with a better grasp of
>  cron than me, can come up with a solution.
>
>  Cheers,
>
>
> Sarah
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-- 
Neal Campbell
Abroham Neal Software
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