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// Remote access

Port 830: NETCONF over SSH

Port 830 is assigned by IANA to netconf-ssh (NETCONF over SSH).

830

How netconf-ssh works

Remote access
terminal:830netconf-ssh terminal:830netconf-ssh

The client opens a session to port 830: each command typed is sent to the server, which runs it and returns the output.

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
Remote access
01 Security

Is port 830 dangerous?

We have no specific security note for port 830. Its risk depends on the program actually listening on it. General advice for remote access services:

  • Do not expose remote administration directly: use a VPN or a zero-trust access proxy.
  • Require MFA or key-based authentication and lock out brute-force attempts.
  • Log every login and alert on new source addresses.
02 Registry

IANA registry entries for port 830

ServicePortTransportDescriptionReferenceUpdated
netconf-ssh 830 TCP, UDP NETCONF over SSH RFC 6242 -

// source: IANA service name and port number registry

03 Check it

Which program uses port 830, and is it reachable?

Linux

sudo ss -ltnup 'sport = :830'      # process listening on 830
sudo lsof -nP -i :830

macOS

sudo lsof -nP -i :830

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 830 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 830
netstat -ano | findstr :830

From another machine

nmap -p 830 -sV <host>
sudo nmap -sU -p 830 <host>
nc -zv <host> 830

Block it in the firewall

sudo ufw deny 830/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 830" -Direction Inbound -LocalPort 830 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 830 used for?

Port 830 is assigned by IANA to netconf-ssh (NETCONF over SSH).

Is port 830 TCP or UDP?

Port 830 is registered for TCP and UDP.

Is it safe to open port 830?

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. Do not expose remote administration directly: use a VPN or a zero-trust access proxy.

How do I check if port 830 is open?

On Linux run "ss -ltnup 'sport = :830'", on macOS "lsof -nP -i :830", and on Windows "netstat -ano | findstr :830" to see the local process. From another machine, "nmap -p 830 <host>" shows whether it is reachable.

05 Related
:22 SSH tcp · udp · sctp · moderate risk :3389 RDP tcp · udp · critical risk :23 Telnet tcp · udp · critical risk :5900 VNC tcp · udp · critical risk :5985 WinRM (HTTP) tcp · udp · high risk :5986 WinRM (HTTPS) tcp · udp · high risk :10000 Webmin tcp · udp · high risk :89 SU/MIT Telnet Gateway tcp · udp

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