WorkCentre 7220-7225 Information Assurance Disclosure Paper
Ver. 1.0, January 2013
Page
22 of 61
2.8.2.1.
Port 22, SFTP
This port is used to securely encrypt the user name, password, and data being transferred to a network
server/repository.
2.8.2.2.
Port 23, NTP
This port is used to retrieve the time from a network server.
2.8.2.3.
Port 25, SMTP
This unidirectional port is open only when Scan to E-mail or Internet Fax (I-Fax) is exporting images to an SMTP
server, or when email alerts are being transmitted. SMTP messages & images are transmitted to the SMTP server
from the device.
2.8.2.4.
Port 53, DNS
Designating a DNS server will allow the device to resolve domain names. This can be configured via the WebUI.
2.8.2.5.
Port 68, DHCP
This port is used only when performing DHCP, and is not open all of the time. To permanently close this port, DHCP
must be explicitly disabled. This is done in User Tools via the Local User Interface or via the TCP/IP page in the
Properties tab on the WebUI.
