Epson SureColor SC-T7700D

Related Information
& “Accessing Web Cong” on page 24
& “Logging on to the Printer Using Web Cong” on page 48
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
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 89
Cannot Communicate Suddenly
The IP address of the printer has been changed or cannot be used.
When the IP address registered to the local address on Group Policy has been changed or cannot be used, IPsec
communication cannot be performed. Disable IPsec using the printer's control panel.
If the DHCP is out of date, rebooting or the IPv6 address is out of date or has not been obtained, then the IP
address registered for the printer's Web Cong (Network Security tab > IPsec/IP Filtering > Basic > Group
Policy > Local Address(Printer)) may not be found.
Use a static IP address.
The IP address of the computer has been changed or cannot be used.
When the IP address registered to the remote address on Group Policy has been changed or cannot be used, IPsec
communication cannot be performed.
Disable IPsec using the printer's control panel.
Administrator's Guide
Advanced Security Settings for Enterprise
104