SecureCRT Initial Setup Checklist

Enable automatic logging

Options → Global Options → General → Default Session → Terminal → Log File

Keep idle sessions alive

Options → Global Options → General → Default Session → Terminal → Send protocol NO-OP every 60s.

Missing firewall definition

Edit C:/Users/<user>/AppData/Roaming/VanDyke/Config/Sessions/Default.ini and tweak Firewall Name. Alternatively, create C:/Users/<user>/AppData/Roaming/VanDyke/Config/FireWalls/ and add an empty None.ini (or 空.ini). Update each session’s Firewall Name accordingly.