For more information on how these settings work, see DNSSEC.
- Use on-line DNSSEC keys. 
 Check this to use on-line DNSSEC keys for signing.- Edit...
 Click this button to edit the on-line keys for the selected zone - using the DNSSEC Keys dialog.
 
- Edit...
- Use off-line DNSSEC keys from a file 
 Check this to use keys from a DNSSEC key file (containing off-line keys) when signing the zone.
 Specify the full path to the DNSSEC key file.- Browse 
 Click this button to browse the local file system for a key file.
- Create new... 
 Click this button to create a new key file - using the DNSSEC Keys dialog.
- Edit... 
 Click this button to edit an existing key file - using the DNSSEC Keys dialog.
 
- KSK / Simple key signatures expire after 
 When signatures made with KSKs / Simple keys should expire.
 Keep in mind that the zone needs to be re-signed before this happens - also allowing for record TTLs.
- ZSK signatures expire after 
 When signatures made with ZSKs should expire. Keep in mind that the zone needs to be re-signed before this happens - also allowing for record TTLs.
- "Sign zone" button 
 DNSSEC sign the zone.- If the keys used (on-line + off-line) include a KSK or a Simple key, then ALL DNSSEC records (including DNSKEY records) will be wiped and then re-created. 
 If the keys are only ZSKs, then existing DNSKEY records and RRSIG records signing the DNSKEY records will be left alone.
