Port 2483Oracle Two-Task Common (TTC)

Oracle database client traffic: TTC carries request and response data over an Oracle Net connection, commonly on TCP port 2483.

inDatabases

transport: tcp · udp
in transit: cleartext
assignment: official
risk: 8/10
lookups: 0

also known as ttc, Oracle TTC, Oracle Net, tns

1 other service is registered on port 2483. compare all 2 →

Technical Details

what runs on :2483

Oracle TTC (Two-Task Common) carries database request and response data within an Oracle Net connection. On TCP port 2483, a client normally establishes an Oracle Net/TNS connection to a configured database listener, then exchanges TTC messages over that session. Oracle Net traffic on this port is ordinarily unencrypted; TCP port 2484 is commonly used for Oracle Net over TLS. IANA also lists UDP, but normal Oracle database client connections use TCP, not UDP. Port 2483 is a configured endpoint, not the usual default listener port of 1521.

Security Information

exposure of :2483

risk score

8/ 10risk

treat as sensitive. widely scanned and regularly exploited when reachable — restrict it to known sources.

databases averages 4.0 across 126 ports — this one sits 4.0 above.

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

An exposed listener can reveal that an Oracle service is reachable and allow remote clients to attempt database authentication and interact with services the listener offers. Do not expose it directly to the internet unless there is a specific need; restrict access to trusted networks and use TLS (commonly on 2484) and strong authentication. Unencrypted connections can expose database traffic to interception on untrusted networks.

Record

iana registry entry

port: :2483
service: Oracle Two-Task Common (TTC)
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 8/10risk
category: Databases
usage: This port may be configured for an Oracle Net listener serving Oracle database clients; it is not the most commonly encountered listener port, which is typically 1521. Oracle TTC is the client-server data protocol used within that connection, rather than a separate general-purpose service.
lookups: 0rank 993
added: 2026-09-23
updated: 2026-09-23
references: IANA service name registry — port 2483

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This record is maintained by the engineers who use port 2483. 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 2026-09-23.

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edit this record →back to the registry

Related Ports

all 126 in databases →

the 8 most looked-up other ports in databases — 126 ports carry that label.

port	service	proto	category	risk	views
:8882	Atlasz Secure App Server	TCP	Web Services	caution	66.9k
:9001	ETL Service Manager	TCPUDP	Databases	caution	28.6k
:2484	Oracle SSL Listener	TCPUDPtls	Security	caution	25.0k
:5495	Applix TM1 Admin	TCP	Databases	caution	24.8k
:591	FileMaker Web Sharing	TCP	Web Services	caution	23.1k
:1521	Oracle TNS Listener	TCP	Security	caution	19.6k
:21001	AMLFilter Admin	TCP	Security	caution	19.2k
:18206	Audition FAM DB	TCPUDP	Databases	caution	19.1k

risk mix of the 8 listed

caution100%

1 of 8 encrypted

Port :2483Oracle Two-Task Common (TTC)

Technical Details

Security Information

Related Ports

Port 2483Oracle Two-Task Common (TTC)