Port Number Allocation
Predetermined port numbers are allocated to each protocol used for communication with external devices. Be aware that a firewall blocking a port can affect printer operation.
In the case of printers equipped with a security policy function, the use of certain communication protocols can be prohibited according to the security policy.The table below shows the communication protocols and their assigned port numbers.Note that some communication protocols may not be supported depending on the model.
For communication protocols that can be restricted, refer to Security Policy Setting Items.
Initial value *: This indicates the default setting for enabling/disabling the communication protocol. "-" indicates that there is no setting for enabling/disabling.
TCP
|
Protocol |
Port number |
Initial value* |
Usage and what it affects |
|---|---|---|---|
|
LPD |
515 |
ON |
Used for LPD printing. LPD printing not possible if set to OFF. |
|
RAW |
9100 |
ON |
Used for RAW printing. RAW printing and JPEG printing from a smartphone are not possible if set to OFF. |
|
HTTP |
80 |
- |
Used for printing and obtaining information between a computer and the printer. Be sure not to block this |
|
HTTPS |
443 |
- |
Used for obtaining information between a computer and the printer. Be sure not to block this |
|
IPP |
631 |
ON |
Used for IPP printing. |
|
IPPS |
631 |
ON |
Used for IPP encryption secure printing. |
UDP
|
Protocol |
Port number |
Initial value* |
Usage and what it affects |
|---|---|---|---|
|
SNMP |
161 |
v1: ON v3: ON |
Used for communication with Simple Network Management Protocol. Status responses to a Mac or Windows printer driver as well as admin apps, Media Configuration Tool management, and Easy Wireless (Easy WL) Connect not possible if set to OFF. |
|
WSD |
3702 |
OFF |
Used for WSD device discovery (WS-Discovery). Printing using WSD not possible if set to OFF. |
|
mDNS |
5353 |
ON |
Used for Bonjour. Bonjour not usable if set to OFF. Search on the network by mDNS (smartphone search from the app etc. on iOS) and automatic setting are not possible. Printing with Mopria or AirPrint are also not possible. |
|
LLMNR |
5355 |
ON |
Used for name resolution requests by LLMNR. Response to name resolution requests by LLMNR not possible if set to OFF. |
|
IKEv1 |
500 |
OFF |
Used for key exchanges by IKEv1. IPsec not usable if set to OFF. |
|
DHCP Client |
68 |
ON |
If set to OFF, it is necessary to allocate an IP address with a protocol other than DHCP or to set an IP address manually. |
