- 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.
Port 5033: Janstor Secure Data
Port 5033 is assigned by IANA to jtnetd-server (Janstor Secure Data).
5033
How jtnetd-server works
Other servicesThe client sends a request to port 5033 and the jtnetd-server service answers.
- Transport
- TCP
- Exposure risk
- not rated depends on the program listening
- Encryption
- Unknownnot stated by the registry
- IANA status
- Assigned1 registered service
- Range
- Registered (1024-49151)
- Category
- Other services
Is port 5033 dangerous?
We have no specific security note for port 5033. Its risk depends on the program actually listening on it. General advice for other services services:
IANA registry entries for port 5033
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| jtnetd-server | 5033 | TCP | Janstor Secure Data | - | 2015-06-08 |
| - | 5033 | - | Reserved | - | - |
// source: IANA service name and port number registry
Which program uses port 5033, and is it reachable?
Linux
sudo ss -ltnup 'sport = :5033' # process listening on 5033
sudo lsof -nP -i :5033macOS
sudo lsof -nP -i :5033
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 5033 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 5033 netstat -ano | findstr :5033
From another machine
nmap -p 5033 -sV <host> nc -zv <host> 5033
Block it in the firewall
sudo ufw deny 5033/tcp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 5033" -Direction Inbound -LocalPort 5033 -Protocol TCP -Action Block # Windows
What is port 5033 used for?
Port 5033 is assigned by IANA to jtnetd-server (Janstor Secure Data).
Is port 5033 TCP or UDP?
Port 5033 is registered for TCP.
Is it safe to open port 5033?
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 5033 is open?
On Linux run "ss -ltnup 'sport = :5033'", on macOS "lsof -nP -i :5033", and on Windows "netstat -ano | findstr :5033" to see the local process. From another machine, "nmap -p 5033 <host>" shows whether it is reachable.
Other other services ports
:4444 Metasploit default / krb524 tcp · udp · high risk :31337 Back Orifice / elite tcp · udp · high risk :1 TCP Port Service Multiplexer tcp · udp :5 Remote Job Entry tcp · udp :9 Discard tcp · udp · sctp · dccp :11 Active Users tcp · udp :17 Quote of the Day tcp · udp :18 Message Send Protocol (historic) tcp · udp