Administrator's Guide

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 Supported algorithms

Consistency Algorithm AES-CBC 128

AES-CBC 192

AES-CBC 256

3DES-CBC

DES-CBC

Hash Algorithm SHA-1

SHA2-256

SHA2-384

SHA2-512

MD5

Algorithm Compatible with Diffie-Hellman Group2

a key

Diffie-Hellman Group1, Diffie-Hellman Group14, Elliptic Curve Diffie-

Hellman P-256, Elliptic Curve Diffie-Hellman P-384; available method may

vary by model

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.