Epson WF-C20590 Administrator Guide - Page 57

Pre-Shared Key was Forgotten If you forget a pre-shared key, change the key using Web Config for the default or group policy. Parent topic: Solving Network Security Problems Cannot Communicate with the Product Using IPsec Communication Make sure your computer is using one of these supported algorithms for communicating with the product: Security method IKE encryption algorithm IKE authentication algorithm IKE key exchange algorithm ESP encryption algorithm ESP authentication algorithm AH authentication algorithm Supported algorithms AES-CBC-128, AES-CBC-192, AES-CBC-256, AES-GCM-128*, AESGCM-192*, AES-GCM-256*, 3DES SHA-1, SHA-256, SHA-384, SHA-512, MD5 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* AES-CBC-128, AES-CBC-192, AES-CBC-256, AES-GCM-128, AESGCM-192, AES-GCM-256, 3DES SHA-1, SHA-256, SHA-384, SHA-512, MD5 * Available for IKEv2 only Parent topic: Solving Network Security Problems Communication was Working, but Stopped If network communication was working, but suddenly stopped, the product's and/or computer's IP address may have changed or is invalid. Try these solutions: • Disable IPsec using the product control panel. • If DHCP is out of date, or the IPv6 address is out of date or was not obtained, you may not be able to find the IP address registered in Web Config. 57