- 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 9878: The KX509 Kerberized Certificate Issuance Protocol in Use in 2012
Port 9878 is assigned by IANA to kca-service (The KX509 Kerberized Certificate Issuance Protocol in Use in 2012).
9878
How kca-service works
Other servicesThe client sends a request to port 9878 and the kca-service service answers.
- Transport
- UDP
- 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 9878 dangerous?
We have no specific security note for port 9878. Its risk depends on the program actually listening on it. General advice for other services services:
IANA registry entries for port 9878
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| kca-service | 9878 | UDP | The KX509 Kerberized Certificate Issuance Protocol in Use in 2012 | RFC 6717 | 2012-07-12 |
| - | 9878 | - | Reserved | - | - |
// source: IANA service name and port number registry
Which program uses port 9878, and is it reachable?
Linux
sudo ss -ltnup 'sport = :9878' # process listening on 9878
sudo lsof -nP -i :9878macOS
sudo lsof -nP -i :9878
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 9878 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 9878 netstat -ano | findstr :9878
From another machine
nmap -p 9878 -sV <host> sudo nmap -sU -p 9878 <host> nc -zv <host> 9878
Block it in the firewall
sudo ufw deny 9878/udp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 9878" -Direction Inbound -LocalPort 9878 -Protocol UDP -Action Block # Windows
What is port 9878 used for?
Port 9878 is assigned by IANA to kca-service (The KX509 Kerberized Certificate Issuance Protocol in Use in 2012).
Is port 9878 TCP or UDP?
Port 9878 is registered for UDP.
Is it safe to open port 9878?
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 9878 is open?
On Linux run "ss -ltnup 'sport = :9878'", on macOS "lsof -nP -i :9878", and on Windows "netstat -ano | findstr :9878" to see the local process. From another machine, "nmap -p 9878 <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