Solving Problems for Advanced Security
Restoring the Security Settings
When you establish a highly secure environment such as IPsec/IP Filtering or IEEE802.1X, you may not be able to
communicate with devices because of incorrect settings or trouble with the device or server. In this case, restore
the security settings in order to make settings for the device again or to allow you temporary use.
Disabling the Security Function Using the Control Panel
You can disable IPsec/IP Filtering or IEEE802.1X using the printer's control panel.
1.
Select Settings > General Settings > Network Settings.
2.
Select Advanced.
3.
Select from the following items that you want to disable.
❏ Disable IPsec/IP Filtering
❏ Disable IEEE802.1X
4.
Select Start Setup on the conrmation screen.
Problems Using Network Security Features
Forgot a Pre–shared Key
Re-congure a pre-shared key.
To change the key, access Web Cong and select the Network Security tab > IPsec/IP Filtering > Basic > Default
Policy or Group Policy.
When you change the pre-shared key, congure the pre-shared key for computers.
Related Information
& “Application for Conguring Printer Operations (Web Cong)” on page 348
& “Encrypted Communication Using IPsec/IP Filtering” on page 505
Cannot Communicate with IPsec Communication
Specify the algorithm that the printer or the computer does not support.
e printer supports the following algorithms. Check the settings of the computer.
Security Methods Algorithms
IKE encryption algorithm AES-CBC-128, AES-CBC-192, AES-CBC-256, AES-GCM-128*, AES-GCM-192*,
AES-GCM-256*, 3DES
Administrator Information
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Advanced Security Settings
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Solving Problems for Advanced Security
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