- 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 17010: Plan 9 cpu port
Port 17010 is assigned by IANA to ncpu (Plan 9 cpu port).
17010
How ncpu works
Other servicesThe client sends a request to port 17010 and the ncpu 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 17010 dangerous?
We have no specific security note for port 17010. Its risk depends on the program actually listening on it. General advice for other services services:
IANA registry entries for port 17010
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| ncpu | 17010 | TCP | Plan 9 cpu port | - | 2022-05-13 |
| - | 17010 | - | Reserved | - | - |
// source: IANA service name and port number registry
Which program uses port 17010, and is it reachable?
Linux
sudo ss -ltnup 'sport = :17010' # process listening on 17010
sudo lsof -nP -i :17010macOS
sudo lsof -nP -i :17010
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 17010 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 17010 netstat -ano | findstr :17010
From another machine
nmap -p 17010 -sV <host> nc -zv <host> 17010
Block it in the firewall
sudo ufw deny 17010/tcp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 17010" -Direction Inbound -LocalPort 17010 -Protocol TCP -Action Block # Windows
What is port 17010 used for?
Port 17010 is assigned by IANA to ncpu (Plan 9 cpu port).
Is port 17010 TCP or UDP?
Port 17010 is registered for TCP.
Is it safe to open port 17010?
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 17010 is open?
On Linux run "ss -ltnup 'sport = :17010'", on macOS "lsof -nP -i :17010", and on Windows "netstat -ano | findstr :17010" to see the local process. From another machine, "nmap -p 17010 <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