Port 4850Sun Java System Application Server Node Agent

Port 4850 is associated with the node agent used to manage Sun Java System Application Server instances.

transport: tcp · udp
in transit: cleartext
assignment: official
risk: 2/10
lookups: 0

also known as sun-as-nodeagt, Sun App Server - NA

Technical Details

what runs on :4850

The assignment identifies the service as Sun App Server Node Agent (NA). In deployments using the relevant Sun application-server versions, the node agent is a host-level management component that communicates with the domain administration server and coordinates local server instances. The registry lists both TCP and UDP, but the assignment alone does not establish that the product uses both transports or specify its wire framing, handshake, or encryption behavior. Do not interpret an open port as a general-purpose web service.

Security Information

exposure of :4850

risk score

2/ 10safe

routine exposure. this port is rarely the way in on its own — keep it patched and logged and move on.

network services averages 2.6 across 1,597 ports — this one sits 0.6 below.

in transit

cleartext

credentials and payloads are readable by anyone on path

assignment

official

registered with iana for this service — scanners fingerprint it by number

reachable over

tcp · udp

udp is connectionless — source addresses are trivially spoofed and it is a reflection favourite

security overview

Treat an exposed listener as part of an application-server management plane: access could reveal or affect managed instances, depending on the product version and configuration. It is a legacy, rarely encountered service; restrict it to the administration network and verify the process and authentication configuration rather than exposing it publicly.

Record

iana registry entry

port: :4850
service: Sun Java System Application Server Node Agent
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 2/10safe
category: Network Services System
usage: This is the IANA-assigned port for Sun App Server Node Agent, a component of legacy Sun Java System Application Server deployments. The node agent runs on a server host and participates in managing application-server instances with the domain administration server; it is not an application HTTP port.
lookups: 0rank 993
added: 2026-10-06
updated: 2026-10-06
references: IANA service name registry — port 4850

Something wrong?

This record is maintained by the engineers who use port 4850. Every field on it is editable — change what's wrong, say how you know, and a reviewer publishes it, usually within a minute. Last touched 2026-10-06.

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edit this record →back to the registry

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risk mix of the 8 listed

caution100%

0 of 8 encrypted

Port :4850Sun Java System Application Server Node Agent

Technical Details

Security Information

Related Ports

Port 4850Sun Java System Application Server Node Agent