Epson DS-570WII - Page 221

Problems Using Network Security Features
Forgot a Pre–shared Key
Re-congure
a pre-shared key.
To change the key, access Web Cong and select the Network Security tab > IPsec/IP Filtering > Basic > Default
Policy or Group Policy.
When you change the pre-shared key, congure the pre-shared key for computers.
Cannot Communicate with IPsec Communication
Specify the algorithm that the scanner or the computer does not support.
e scanner 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
Cannot Communicate Suddenly
There is an error in the certicate.
e
scanner's date and time settings may be incorrect if power has not been supplied to the scanner for a long
time.
When the scanner is connected using a client
certicate
for IPsec/IP
ltering
or IEEE802.1X, an error is indicated
if a time lag occurs between the scanner's date and time and the validity period for the certicate. Because the
scanner recognizes that the certicate is unavailable.
You can solve this problem by correcting the scanner's date and time settings. Connect the scanner and the
computer using a USB cable, turn the scanner on, and then perform scanning over USB using Epson Scan 2. e
scanner is synchronized with the computer and the date and time settings are corrected. e scanner indicates
normal status.
Administrator Information > Advanced Security Settings > Solving Problems for Advanced Security
221