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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 Check or not Prohibited for the GX2000 series.

TCP

Protocol

Port

Initial value

Security Policy

Usage and what it affects

LPD

515

ON

Check

Used for LPR printing.

LPR printing not possible if set to OFF.

RAW

9100

ON

Check

Used for RAW printing.

RAW printing and JPEG printing from a smartphone are not possible if set to OFF.

HTTP

80

-

Prohibited

Used for printing and obtaining information between a computer and the printer. Be sure not to block this

HTTPS

443

-

Prohibited

Used for obtaining information between a computer and the printer. Be sure not to block this

IPP

631

ON

Check

Used for IPP printing.

IPPS

631

ON

Check

Used for IPP encryption secure printing.

UDP

Protocol

Port

Initial value

Security Policy

Usage and what it affects

SNMP

161

v1: ON

v3: ON

Check

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

Check

Used for WSD device discovery (WS-Discovery). Printing using WSD not possible if set to OFF.

mDNS

5353

ON

Check

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

Prohibited

Used for name resolution requests by LLMNR.

Response to name resolution requests by LLMNR not possible if set to OFF.

IKEv1

500

OFF

Prohibited

Used for key exchanges by IKEv1. IPsec not usable if set to OFF.

DHCP Client

68

ON

Prohibited

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.