Canon i-SENSYS MF6140dn User Manual page 686

When the setup is complete
Restart the machine to take effect the settings.
1
Press [ ] (Menu).
2
Select <System Settings> using [
When the system manager ID and system manager PIN are specified
Use the numeric keys to enter the ID and number, and then press [
3
Select <Security Settings> using [
4
Select <Use SSL> using [
5
Select <Off> or <On> using [
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] or [ ] and press [OK].
] or [ ] and press [OK].
] or [ ] and press [OK].
] or [ ] and press [OK].
] (Log In/Out).