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Enabling and Disabling Protocols

Specify whether to enable or disable the function for each protocol. By making this setting, you can specify which protocols are available and so prevent unauthorized access over the network. Network settings can be specified on the control panel or by using Web Image Monitor, telnet, Device Manager NX, or Remote Communication Gate S. In the case of Device Manager NX, use it to start Web Image Monitor and configure the settings from there.

Protocol	Port	Setting method	When disabled
IPv4	-	Control panel Web Image Monitor telnet Device Manager NX Remote Communication Gate S	All applications that operate over IPv4 cannot be used. IPv4 cannot be disabled from Web Image Monitor when using IPv4 transmission.
IPv6	-	Control panel Web Image Monitor telnet Device Manager NX Remote Communication Gate S	All applications that operate over IPv6 cannot be used.
IPsec	-	Control panel Web Image Monitor telnet Device Manager NX	Encrypted transmission using IPsec is disabled.
FTP	TCP:21	Web Image Monitor telnet Device Manager NX Remote Communication Gate S	Functions that require FTP cannot be used. You can restrict personal information from being displayed by making settings on the control panel using "Restrict Display of User Information".
ssh/sftp	TCP:22	Web Image Monitor telnet Device Manager NX Remote Communication Gate S	Functions that require sftp cannot be used. You can restrict personal information from being displayed by making settings on the control panel using "Restrict Display of User Information".
telnet	TCP:23	Web Image Monitor Device Manager NX	Commands using telnet are disabled.
SMTP	TCP:25 (variable)	Control panel Web Image Monitor Device Manager NX Remote Communication Gate S	Internet Fax or e-mail notification functions that require SMTP reception cannot be used.
HTTP	TCP:80	Web Image Monitor telnet Device Manager NX	Functions that require HTTP cannot be used. Cannot print using IPP on port 80.
HTTPS	TCP:443	Web Image Monitor telnet Device Manager NX	Functions that require HTTPS cannot be used. @Remote cannot be used. You can also make settings to require SSL transmission using the control panel or Web Image Monitor.
SMB	TCP:139	Control panel Web Image Monitor telnet Device Manager NX Remote Communication Gate S	SMB printing functions cannot be used.
NBT	UDP:137 UDP:138	telnet	SMB printing functions via TCP/IP, as well as NetBIOS designated functions on the WINS server cannot be used.
SNMPv1,v2	UDP:161	Web Image Monitor telnet Device Manager NX Remote Communication Gate S	Functions that require SNMPv1, v2 cannot be used. Using the control panel, Web Image Monitor or telnet, you can specify that SNMPv1, v2 settings are read-only, and cannot be edited.
SNMPv3	UDP:161	Web Image Monitor telnet Device Manager NX Remote Communication Gate S	Functions that require SNMPv3 cannot be used. You can also specify settings to require SNMPv3 encrypted transmission and restrict the use of other transmission methods using the control panel, Web Image Monitor, or telnet.
RSH/RCP	TCP:514	Web Image Monitor telnet Device Manager NX Remote Communication Gate S	Functions that require RSH and network TWAIN functions cannot be used. You can restrict personal information from being displayed by making settings on the control panel using "Restrict Display of User Information".
LPR	TCP:515	Web Image Monitor telnet Device Manager NX Remote Communication Gate S	LPR functions cannot be used. You can restrict personal information from being displayed by making settings on the control panel using "Restrict Display of User Information".
IPP	TCP:631	Web Image Monitor telnet Device Manager NX Remote Communication Gate S	IPP functions cannot be used.
IP-Fax	TCP:1720 (H.323) UDP:1719 (Gatekeeper) TCP/UDP:5060 (SIP) TCP:5000 (H.245) UDP:5004, 5005 (Voice) TCP/UDP:49152 (T.38)	Control panel Web Image Monitor Device Manager NX Remote Communication Gate S	IP-Fax connecting functions using H.323, SIP and T.38 cannot be used.
SSDP	UDP:1900	Web Image Monitor telnet Device Manager NX	Device discovery using UPnP from Windows cannot be used.
Bonjour	UDP:5353	Web Image Monitor telnet Device Manager NX Remote Communication Gate S	Bonjour functions cannot be used.
@Remote	TCP:7443 TCP:7444	Control panel telnet	@Remote cannot be used.
DIPRINT	TCP:9100	Web Image Monitor telnet Device Manager NX Remote Communication Gate S	DIPRINT functions cannot be used.
RFU	TCP:10021	Control panel telnet	You can update firmware via FTP.
NetWare	(IPX/SPX)	Control panel Web Image Monitor telnet Device Manager NX Remote Communication Gate S	Cannot print with NetWare. SNMP over IPX cannot be used.
WSD (Device)	TCP:53000 (variable)	Web Image Monitor telnet Device Manager NX Remote Communication Gate S	WSD (Device) functions cannot be used.
WSD (Printer)	TCP:53001 (variable)	Web Image Monitor telnet Device Manager NX Remote Communication Gate S	WSD (Printer) functions cannot be used.
WSD (Scanner)/DSM	TCP-53002 (variable)	Web Image Monitor telnet Device Manager NX Remote Communication Gate S	WSD (Scanner) and DSM functions cannot be used.
WS-Discovery	UDP/TCP:3702	telnet Remote Communication Gate S	WSD (Device, Printer, Scanner) search function cannot be used.
RHPP	TCP:59100	Web Image Monitor telnet Device Manager NX	Cannot print with RHPP.
LLTD	-	telnet	Device search function using LLTD cannot be used.
LLMNR	UDP:5355	Web Image Monitor telnet	Name resolution requests using LLMNR cannot be responded.

"Restrict Display of User Information" is one of the Extended Security features. For details about making this setting, see Specifying the Extended Security Functions.