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Communication Ports used by Citrix Hypervisor
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Communication Ports used by Citrix Hypervisor
This article provides an overview of common ports that are used by Citrix Hypervisor components and must be considered as part of networking architecture, especially if communication traffic traverses network components such as firewalls or proxy servers where ports must be opened to ensure communication flow.
Not all ports need to be open, depending on your deployment and requirements.
Source | Destination | Type | Port | Details |
---|---|---|---|---|
Citrix Hypervisor | Citrix Hypervisor | TCP | 80, 443 | Intra-host communication between members of a resource pool using the management API |
Citrix License Server | TCP | 27000 | Handles initial connection for license requests | |
TCP | 7279 | Check-in/check-out of licenses | ||
NTP Service | TCP, UDP | 123 | Time Synchronization | |
DNS Service | TCP, UDP | 53 | DNS Lookups | |
Domain Controller | TCP, UDP | 389 | LDAP (for Active Directory user authentication) | |
TCP | 636 | LDAP over SSL (LDAPS) | ||
FileServer (with SMB storage) | TCP, UDP | 139 | ISOStore:NetBIOSSessionService | |
TCP, UDP | 445 | ISOStore:Microsoft-DS | ||
SAN Controller | TCP | 3260 | iSCSI Storage | |
NAS Head/File Server | TCP | 2049 | NFSv4 Storage | |
TCP, UDP | 2049 | NFSv3 Storage. TCP is the default | ||
TCP, UDP | 111 | NFSv3 Storage - connection to rpcbind | ||
TCP, UDP | Dynamic | NFSv3 Storage - a dynamic set of ports chosen by the filer | ||
Syslog | UDP | 514 | Sends data to a central location for collation | |
Clustering | TCP | 8892, 8896, 21064 | Communication between all pool members in a clustered pool | |
UDP | 5404, 5405 | |||
XenCenter | Citrix Hypervisor | TCP | 22 | SSH |
TCP | 443 | Management using the management API | ||
Virtual Machine | TCP | 5900 | VNC for Linux VMs | |
TCP | 3389 | RDP for Windows VMs | ||
Other clients | Citrix Hypervisor | TCP | 80, 443 | Any client that uses the management API to communicate with Citrix Hypervisor servers |
Note:
To improve security, you can close TCP port 80 on the management interface of Citrix Hypervisor hosts. For more information about how to close port 80, see Restrict use of port 80.
If FQDN is used instead of IP as resource, then make sure it is resolvable.
Additional port information
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