DGX OS Connectivity Requirements

In a typical operation, DGX OS runs services to support typical usage of the DGX system.

Some of these services require network communication. The table below describes the port, protocol, direction, and communication purpose for the services. DGX administrators should consider their site-specific access needs and allow or disallow communication with the services as necessary.

In-Band Management, Storage, and Compute Networks

This table provides information about the in-band management, storage, and compute networks.

Table 1. In-Band Management, Storage, and Compute Networks

Port (Protocol)	Direction	Use
22 (TCP)	Inbound	SSH
53 (UDP)	Outbound	DNS
80 (TCP)	Outbound	HTTP, package updates
111 (TCP)	Inbound/Outbound	RPCBIND, required by NFS
273 (TCP)		NVIDIA System Management Management
443 (TCP)	Outbound	For internet (HTTP/HTTPS) connection to NVIDIA GPU Cloud. If port 443 is proxied through a corporate firewall, then WebSocket protocol traffic must be supported
1883 (TCP)		Mosquitto Database (used by NVIDIA System Management)

Out-of-Band Management

This table provides information about out-of-band management for your DGX system.

Table 2. Out-of-Band Management

Port (Protocol)	Direction	Use
443 (TCP)	Inbound	For BMC web services, remote console services, and CD-media service. If port 443 is proxied through a corporate firewall, then WebSocket protocol traffic must be supported.
623 (UDP)	Inbound	IPMI