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.
When configuring IPv6, VPS may not be compatible due to the provider's IPv6 type. Check the type of IPv6 you want to use, and coordinate with the provider's administrator to find out what to do.
The following table describes whether the function is present 
or not 
for the GX2000 series.
TCP
|
Protocol |
Port |
Initial value |
Security Policy |
Usage and what it affects |
|---|---|---|---|---|
|
LPD |
515 |
ON |
|
Used for LPR printing. LPR 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 |
Initial value |
Security Policy |
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. |
