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> On Sat, 2010-11-20 at 19:53 +0100, Gian Carlo Stagni wrote:
>> Set PingCmd simply to "/bin/true" (and hope the remote host keeps 
>> working fine)

That's what I do at the moment, but I would like to actually use the
ping functionality.

> 
> Or use a TCP ping method. However, this requires your BackupPC server to
> either run a command as root or run a setuid root command:
> 
> sudo hping3 -S -c 1 -p 22 host | grep 'flags=SA'
> 
> hping3 treats ICMP-port-unreachable messages as answers, so you have to
> grep for "SYN ACK" flags in the returned packet.

That did the trick. Thanks a lot!

Regards
Daniel
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