3.
Select from the following items that you want to disable.
❏
Disable IPsec/IP Filtering
❏
Disable IEEE802.1X
4.
Select
Start Setup
on the confirmation screen.
Problems Using Network Security Features
Forgot a Pre–shared Key
Re-configure a pre-shared key.
To change the key, access Web Config and select the
Network Security
tab >
IPsec/IP Filtering
>
Basic
>
Default
Policy
or
Group Policy
.
When you change the pre-shared key, configure the pre-shared key for computers.
Related Information
&
“Application for Configuring Printer Operations (Web Config)” on page 374
&
“Encrypted Communication Using IPsec/IP Filtering” on page 541
Cannot Communicate with IPsec Communication
Specify the algorithm that the printer or the computer does not support.
The 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
IKE authentication algorithm
SHA-1, SHA-256, SHA-384, SHA-512, MD5
IKE key exchange algorithm
DH Group1, DH Group2, DH Group5, DH Group14, DH Group15, DH
Group16, DH Group17, DH Group18, DH Group19, DH Group20, DH
Group21, DH Group22, DH Group23, DH Group24, DH Group25, DH
Group26, DH Group27*, DH Group28*, DH Group29*, DH Group30*
ESP encryption algorithm
AES-CBC-128, AES-CBC-192, AES-CBC-256, AES-GCM-128, AES-GCM-192,
AES-GCM-256, 3DES
ESP authentication algorithm
SHA-1, SHA-256, SHA-384, SHA-512, MD5
AH authentication algorithm
SHA-1, SHA-256, SHA-384, SHA-512, MD5
*available for IKEv2 only
Related Information
&
“Encrypted Communication Using IPsec/IP Filtering” on page 541
>
>
Solving Problems for Advanced Security
559