Port 9401

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Regulo Akers

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Aug 3, 2024, 5:39:53 PM8/3/24

to wilxyfathing

Notes:
Port numbers in computer networking represent communication endpoints. Ports are unsigned 16-bit integers (0-65535) that identify a specific process, or network service. IANA is responsible for internet protocol resources, including the registration of commonly used port numbers for well-known internet services.
Well Known Ports: 0 through 1023.
Registered Ports: 1024 through 49151.
Dynamic/Private : 49152 through 65535.

TCP ports use the Transmission Control Protocol, the most commonly used protocol on the Internet and any TCP/IP network. TCP enables two hosts to establish a connection and exchange streams of data. TCP guarantees delivery of data and that packets will be delivered in the same order in which they were sent. Guaranteed communication/delivery is the key difference between TCP and UDP.

UDP ports use the Datagram Protocol. Like TCP, UDP is used in combination with IP (the Internet Protocol) and facilitates the transmission of datagrams from one computer to applications on another computer, but unlike TCP, UDP is connectionless and does not guarantee reliable communication; it's up to the application that received the message to process any errors and verify correct delivery. UDP is often used with time-sensitive applications, such as audio/video streaming and realtime gaming, where dropping some packets is preferable to waiting for delayed data.

When troubleshooting unknown open ports, it is useful to find exactly what services/processes are listening to them. This can be accomplished in both Windows command prompt and Linux variants using the "netstat -aon" command. We also recommend runnig multiple anti-virus/anti-malware scans to rule out the possibility of active malicious software. For more detailed and personalized help please use our forums.

On backup infrastructure components, Veeam Backup & Replication automatically creates firewall rules for the required ports on Windows-based machines. If you are using a third-party firewall, these rules must be created manually. These rules allow components to communicate with each other.

Note: This range of ports applies to newly installed Veeam Backup & Replication starting from version 10.0, without upgrade from previous versions. If you have upgraded from an earlier version of the product, the range of ports from 2500 to 5000 applies to the already added components.

The following table describes network ports that must be opened to ensure proper communication of backup proxies with other backup components. For more information about ports that must be opened between the backup proxy and specific backup repository, see Backup Repositories.

Note: If you use default Microsoft Windows firewall settings, you do not need to configure dynamic RPC ports. During setup, Veeam Backup & Replication automatically creates a firewall rule for the runtime process. If you use firewall settings other than default ones or application-aware processing fails with the "RPC function call failed" error, you need to configure dynamic RPC ports. For more information on how to configure RPC dynamic port allocation to work with firewalls, see this Microsoft KB article.

You can specify a different port while adding the Linux server to the Veeam Backup & Replication infrastructure. Note that you can specify a different port only if there is no previously installed Veeam Data Mover on this Linux server. For more information, see Specify Credentials and SSH Settings.

The following table describes network ports that must be opened to ensure proper communication with gateway servers. For more information about ports that must be opened between the gateway server and specific backup repository, see Backup Repositories.

Default range of ports used as transmission channels for copy backup operations if the backup server is used as the target backup repository. These ports are also required for file copy operations between the Linux backup repository and the backup server.

Consider that certificate verification endpoints (CRL URLs and OCSP servers) are subject to change. The actual list of addresses can be found in the certificate itself. For more details, see also this Microsoft article.

The following table describes network ports and endpoints that must be opened to ensure proper communication with object storage repositories used as a part of Archive Tier. For more information, see Archive Tier.