CyberHunter
Local dataset, no network
// Other services

Port 148: Jargon

Port 148 is assigned by IANA to jargon (Jargon).

148

How jargon works

Other services
client:148jargonresponse client:148jargonresponse

The client sends a request to port 148 and the jargon service answers.

Transport
TCP · UDP
Exposure risk
not rated depends on the program listening
Encryption
Unknownnot stated by the registry
IANA status
Assigned1 registered service
Range
Well-known (0-1023)
Category
Other services
01 Security

Is port 148 dangerous?

We have no specific security note for port 148. Its risk depends on the program actually listening on it. General advice for other services services:

  • Close the port if nothing on the host needs it.
  • Identify the process that listens on it (commands below) before opening it in a firewall.
  • Expose a service only to the networks that use it.
02 Registry

IANA registry entries for port 148

ServicePortTransportDescriptionReferenceUpdated
jargon 148 TCP, UDP Jargon - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 148, and is it reachable?

Linux

sudo ss -ltnup 'sport = :148'      # process listening on 148
sudo lsof -nP -i :148

macOS

sudo lsof -nP -i :148

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 148 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 148
netstat -ano | findstr :148

From another machine

nmap -p 148 -sV <host>
sudo nmap -sU -p 148 <host>
nc -zv <host> 148

Block it in the firewall

sudo ufw deny 148/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 148" -Direction Inbound -LocalPort 148 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 148 used for?

Port 148 is assigned by IANA to jargon (Jargon).

Is port 148 TCP or UDP?

Port 148 is registered for TCP and UDP.

Is it safe to open port 148?

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. Close the port if nothing on the host needs it.

How do I check if port 148 is open?

On Linux run "ss -ltnup 'sport = :148'", on macOS "lsof -nP -i :148", and on Windows "netstat -ano | findstr :148" to see the local process. From another machine, "nmap -p 148 <host>" shows whether it is reachable.

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