Secure communication
All Printix communication inside and outside the network is secured with encryption and the use of HTTPS (SSL/TLS). Documents are stored encrypted until they expire and get deleted. Documents do not need to leave your network.
- HTTPS on TCP port 443
Secure browser communication between the components and Identity Providers, such as Microsoft Entra ID, Google Workspace, Okta, OneLogin and others.
These ports must be open within the network:
- SNMP on UDP port 161
Access and collect information from printers via SNMP. Both SNMPv1 and SNMPv3 is supported. ICMP message requests and replies must be allowed on the local network, as the ping command is used to discover printers. - RAW print on TCP port 9100
Transfer print data to the printers. The computer with Printix Client must be able to reach the printer on the network to allow printing. Print data can also be sent via: - TCP port 21335
Forward print data to another computer running Printix Client. Encrypted. This is only used if a computer is used for bridging two known networks. - TCP port 21336
Secure communication to Printix Redirector on a Windows Server. - UDP port 21337
Printix Discovery Protocol used to find computers running Printix Client. Not encrypted. - UDP port 5353
If mobile print is enabled, and is to be used with iOS/iPadOS phones and tablets, then Printix Client will broadcast AirPrint printers via the Bonjour networking protocol (Multicast DNS).
Printix Client requires these ports to be open on the local computer:
- TCP port 21338
Secure communication locally on the computer between the two processes: PrintixClient.exe and PrintixService.exe.
- TCP port 21339
Local communication via HTTP to allow the PrintixService.exe to listen for print data from the Windows Print Spooler (spoolsv.exe) and Mac CUPS (org.cups.cupsd).
- TCP port 21343
Local Secure communication via HTTPS to allow the PrintixService.exe to listen for print data from the Windows Print Spooler (spoolsv.exe). Enabled via Printix Windows Registry setting DisableHTTPPrinting.
If Printix Go is in use these ports must also be open within the network:
- TCP port 7627
SOAP communication from Printix Client to Printix Go on HP printers.
- TCP port 21343
Secure communication via HTTPS from the Printix Go printers with Capture to Printix Client. Applies to: HP and Konica Minolta printers. Does not apply to: Ricoh printers.
- TCP port 50003
SOAP communication from Printix Client to Printix Go on Konica Minolta printers.
- TCP port 51443
Secure communication via HTTPS from Printix Client for Windows to Printix Go on Ricoh printers. The communication happens during the installation, update, and uninstallation of Printix Go and is performed by the Printix Go Ricoh Installer (silently invoked by Printix Client).
If Active Directory authentication is enabled one of these ports must also be open within the network:
- Secure LDAPS on TCP 636
Authentication of users via secure LDAPS. - LDAP on TCP port 389
Authentication of users via LDAP.
Windows 
Printix Client automatically configures the required ports in the local Windows Firewall. It does so by running the provided file: open_firewall.cmd
Internet endpoints that must be unblocked
Use of a web proxy and/or SSL inspection may for example prevent Sign in to Printix Client. You MUST add the printix.net domain and subdomains as exceptions so traffic is not blocked.
The syntax for adding exceptions varies depending on the software you use. Please refer to you security software documentation to determine the syntax for specifying a domain and subdomains. These are some common examples of wildcard syntax:
- *.printix.net
- .printix.net
The specific internet endpoints that must be unblocked:
Required
These internet endpoints MUST always be unblocked:
- https://assets.printix.net
- https://api.printix.net
- https://auth.printix.net
- https://sign-in.printix.net
- https://drivers.printix.net
- https://software.printix.net
- wss://websocket.proxyendpoint.printix.net
Additionally required if documents go via the cloud
These internet endpoints MUST also be unblocked if documents go via the cloud:
- If you do not add an own cloud storage, but just use the Printix offered cloud storage:
- https://prodenv2printjobs.blob.core.windows.net
- If you add an own Azure Blob Storage you need to include the URL referencing the account name (For example: printixcloudstorage):
- https://printixcloudstorage.blob.core.windows.net
- If you add an own Google Cloud Storage you need to include the URL referencing the bucket name (For example: printix-cloud-storage):
- https://storage.cloud.google.com/printix-cloud-storage
Additionally required if you use Printix Go
These internet endpoints MUST also be unblocked if you use Printix Go:
- https://device-api.printix.net
- https://on-device-api.printix.net
- https://on-device-printer-sign-in.printix.net
- https://on-device-printer-release-documents.printix.net
- https://on-device-capture.printix.net
Additionally required if you enable mobile print (Apple AirPrint)
These internet endpoints MUST also be unblocked if you enable mobile print (Apple AirPrint):
- https://airprint.printix.net
How does Printix Client find the web proxy?
Printix Client consists of two components:
- The user interface of Printix Client (PrintixClient.exe) which runs under the signed in user’s account
- The Printix Service (PrintixService.exe) which runs under the local system account, and handles the printing.
Printix Client use a Windows function WinHttpGetProxyForUrl (implements WPAD) to get the proxy settings from the PAC file. It also looks at the proxy settings configured for the user. If it finds a suitable set of proxy settings for the user, it remembers them in the registry under the LSA user (HKEY_USERS\S-1-5-18\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections).
How to determine if SSL Inspection is used
- Open web browser and enter the URL.
- Select the padlock icon to the left of the address
- If the certificate is intermediate, SSL inspection is used.
Troubleshooting
- I have a web proxy and sign in to Printix Client does not work
- I have a web proxy and my printer will not install
- I do not recognize the used web proxy
- I have disabled the web proxy, but the computer still does not act as proxy
- Print via the cloud does not work
I have a web proxy and sign in to Printix Client does not work
- Sign in with Microsoft, Google or email in Printix Client just returns to Sign in.
RESOLUTION: You MUST add the required domains (see above) as exceptions so traffic is not blocked. See also: Sign in issues.
I have a web proxy and my printer will not install
- Print drivers can not be downloaded from the Printix driver store.
RESOLUTION: Unblock the intenet endpoint https://drivers.printix.net
I do not recognize the used web proxy
- In this case the PrintixService.log file will contain the text like this: running with proxy1: http://172.23.100.13:8080/ and Unable to connect to the remote server.
RESOLUTION: Check if the web proxy is part of the PAC file and if it should be updated/deleted.
I have disabled the web proxy, but the computer still does not act as proxy
- In this case, the PrintixService.log file may contain errors like: Proxy: Error event, Exception: proxy error
RESOLUTION: Follow the steps below to delete settings from Windows Registry.
- Select Windows logo
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key + R to open Run. - Type: regedit, and select OK.
- In Registry Editor browse to:
HKEY_USERS\S-1-5-18\Software\Microsoft\
Windows\CurrentVersion\Internet Settings\Connections
- Delete the two entries called DefaultConnectionSettings and SavedLegacySettings.
- Restart the computer.
- Sign in to Printix Client again.
Print via the cloud does not work
- Use of a web proxy and/or SSL inspection may require additional internet endpoints to be unblocked.
RESOLUTION: Unblock the required internet endpoints to allow printing via the cloud.
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