Security and Management Function Specifications
Firewall Settings
When specifying IP addresses in firewall settings, up to 16 IP addresses (or ranges of IP addresses) can be specified for both IPv4 and IPv6.
When specifying MAC addresses in firewall settings, up to 32 MAC addresses can be specified.
Registration of Certificates (User Signature Keys/Certificates, CA Certificates, S/MIME Certificates)
The algorithms and formats of keys and certificates that can be registered are as follows.
RSA signature algorithm: | SHA-256/SHA-384*1/SHA-512*1 |
RSA public-key algorithm (key length): | RSA (512 bits/1024 bits/2048 bits/4096 bits) |
ECDSA signature algorithm: | SHA-256/SHA-384/SHA-512 |
ECDSA public-key algorithm (key length): | ECDSA (P256/P384/P521) |
Certificate format: | User Signature Keys/Certificates: PKCS#12*2 CA Certificates, S/MIME Certificates: X.509 DER/PEM |
File extension: | User Signature Keys/Certificates: p12/pfx CA Certificates, S/MIME Certificates: cer/pem |
Maximum number of registerable certificates: | Keys, Certificates: 5 CA Certificates: 88 |
*1 Available only when the key algorithm is 1024 bits or more. *2 Available only when installed by using the Remote UI. A certificate contained in a key must comply with the operating conditions for a CA certificate. A certificate cannot be registered if the file size exceeds 2 MB. | |
Definition of "Weak Encryption"
When [Prohibit Use of Weak Encryption] in [Encryption Settings] is set to [On], the use of the following algorithms is prohibited. [Encryption Settings]
Hash: | MD4, MD5, SHA-1 |
HMAC: | HMAC-MD5 |
Common key cryptosystem: | RC2, RC4, DES |
Public key cryptosystem: | RSA encryption (512 bits/1024 bits), RSA signature (512 bits/1024 bits), DSA (512 bits/1024 bits), DH (512 bits/1024 bits) |
|
Even when [Prohibit Key/Cert. with Weak Encryption] in [Encryption Settings] is set to [On], the hash algorithm SHA-1, which is used for signing a root certificate, can be used. |
Log Management
The following types of logs can be managed on the machine. Collected logs can be exported in the CSV file format.
Log Type | Log Type | Number Indicated as "Log Type" in the CSV File | Description |
Job Log | Job Log | 128 | Scan logs are not supported. There are three types of logs: Copy Job History, Print History, and Communication History. |
Transmission Log | Transmission Log | 128 | The log contains information related to transmissions. |
Import/Export of the Setting Data
Max. Destinations Registered to Address Book
TLS
The following combinations of the TLS version and algorithm are usable:
: Usable 
: Not usableAlgorithm | TLS Version | |||
TLS 1.3 | TLS 1.2 | TLS 1.1 | TLS 1.0 | |
Encryption Algorithm | ||||
AES-CBC (256bit) | | | | |
AES-CBC (128bit) | | | | |
AES-GCM (256bit) | | | | |
AES-GCM (128bit) | | | | |
3DES-CBC | | | | |
CHACHA20-POLY1305 | | | | |
Key Exchange Algorithm | ||||
RSA | | | | |
ECDHE | | | | |
X25519 | | | | |
Signature Algorithm | ||||
RSA | | | | |
ECDSA | | | | |
HMAC Algorithm | ||||
SHA1 | | | | |
SHA256 | | | | |
SHA384 | | | | |