connection data

HostnameLookups on
  • A DNS lookup is done for all incoming connections.
  • You can drop this for very heavily loaded services.
  • It is required for hostname-based access control.
IdentityCheck on
  • Causes an ident lookup for every connection.
  • Don't use this with very heavily loaded servers.
  • Beware caches.
  • You can start with it on for simple servers and then review the decision.

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