- 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 9978: XYBRID RT Server
Port 9978 is assigned by IANA to xybrid-rt (XYBRID RT Server).
9978
How xybrid-rt works
Other servicesThe client sends a request to port 9978 and the xybrid-rt 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 9978 dangerous?
We have no specific security note for port 9978. Its risk depends on the program actually listening on it. General advice for other services services:
IANA registry entries for port 9978
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| xybrid-rt | 9978 | TCP | XYBRID RT Server | - | 2013-01-24 |
| - | 9978 | - | Reserved | - | - |
// source: IANA service name and port number registry
Which program uses port 9978, and is it reachable?
Linux
sudo ss -ltnup 'sport = :9978' # process listening on 9978
sudo lsof -nP -i :9978macOS
sudo lsof -nP -i :9978
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 9978 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 9978 netstat -ano | findstr :9978
From another machine
nmap -p 9978 -sV <host> nc -zv <host> 9978
Block it in the firewall
sudo ufw deny 9978/tcp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 9978" -Direction Inbound -LocalPort 9978 -Protocol TCP -Action Block # Windows
What is port 9978 used for?
Port 9978 is assigned by IANA to xybrid-rt (XYBRID RT Server).
Is port 9978 TCP or UDP?
Port 9978 is registered for TCP.
Is it safe to open port 9978?
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 9978 is open?
On Linux run "ss -ltnup 'sport = :9978'", on macOS "lsof -nP -i :9978", and on Windows "netstat -ano | findstr :9978" to see the local process. From another machine, "nmap -p 9978 <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