Hi Christophe,

The host name information into ntopng comes from the DHCP, MDNS and NetBIOS. Moreover, if you enable DNS resolution (see -n option), ntopng will also decode/perform DNS queries to resolve host names.


When the DHCP lease expires, your clients will perform a new DHCP request with hostname info and ntopng will update the client host name.

Regards,
Emanuele


On 02/28/2018 05:45 PM, Christophe Gierski wrote:
Dear all,

On the host detail panel, some time the Name and Further Host Names/Information 
fields have different hostname.

1/ Where these information come from ? ( DNS requests, ... )
2/ We use DHCP server for laptop. How to configure NtopNG to refresh the data 
when the lease has expired, or is it Laptop configuration issue to update the 
DNS records ?

Thx & rgds,
Christophe.


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