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// Messaging & queues

Port 7673: iMQ STOMP Server over SSL

Port 7673 is assigned by IANA to imqstomps (iMQ STOMP Server over SSL).

7673

How imqstomps works

Messaging & queues
producerconsumerqueueimqstomps producerconsumerqueueimqstomps

Producers publish messages into a queue on port 7673; consumers pick them up in order, at their own pace. Everything is encrypted: someone on the path only sees unreadable bytes.

Transport
TCP
Exposure risk
not rated depends on the program listening
Encryption
EncryptedTLS or built-in crypto
IANA status
Assigned1 registered service
Range
Registered (1024-49151)
Category
Messaging & queues
01 Security

Is port 7673 dangerous?

We have no specific security note for port 7673. Its risk depends on the program actually listening on it. General advice for messaging & queues services:

  • Require authentication and TLS on brokers and coordination services.
  • Restrict clients by network and per-topic or per-queue permissions.
  • Remove default accounts.
02 Registry

IANA registry entries for port 7673

ServicePortTransportDescriptionReferenceUpdated
imqstomps 7673 TCP iMQ STOMP Server over SSL - 2009-03-10
-7673-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 7673, and is it reachable?

Linux

sudo ss -ltnup 'sport = :7673'      # process listening on 7673
sudo lsof -nP -i :7673

macOS

sudo lsof -nP -i :7673

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 7673 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 7673
netstat -ano | findstr :7673

From another machine

nmap -p 7673 -sV <host>
nc -zv <host> 7673

Block it in the firewall

sudo ufw deny 7673/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 7673" -Direction Inbound -LocalPort 7673 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 7673 used for?

Port 7673 is assigned by IANA to imqstomps (iMQ STOMP Server over SSL).

Is port 7673 TCP or UDP?

Port 7673 is registered for TCP.

Is it safe to open port 7673?

It depends on the program that listens on it. Open it only for a service you know and only to the networks that need it. Require authentication and TLS on brokers and coordination services.

How do I check if port 7673 is open?

On Linux run "ss -ltnup 'sport = :7673'", on macOS "lsof -nP -i :7673", and on Windows "netstat -ano | findstr :7673" to see the local process. From another machine, "nmap -p 7673 <host>" shows whether it is reachable.

05 Related
:5672 AMQP (RabbitMQ) tcp · udp · sctp · high risk :9092 Apache Kafka tcp · udp · high risk :2181 ZooKeeper tcp · udp · high risk :15672 RabbitMQ management tcp · high risk :1881 IBM WebSphere MQ Everyplace tcp · udp :2230 MetaSoft Job Queue Administration Service tcp · udp :2664 Patrol for MQ GM tcp · udp :2665 Patrol for MQ NM tcp · udp

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