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// Other services

Port 6513: NETCONF over TLS

Port 6513 is assigned by IANA to netconf-tls (NETCONF over TLS).

6513

How netconf-tls works

Other services
client:6513#%&@!x9response? client:6513#%&@!x9response?

The client sends a request to port 6513 and the netconf-tls service answers. Everything is encrypted: someone on the path only sees unreadable bytes.

Transport
TCP
Exposure risk
not rated depends on the program listening
Encryption
EncryptedTLS or built-in crypto
IANA status
Assigned1 registered service
Range
Registered (1024-49151)
Category
Other services
01 Security

Is port 6513 dangerous?

We have no specific security note for port 6513. Its risk depends on the program actually listening on it. General advice for other services services:

  • 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.
02 Registry

IANA registry entries for port 6513

ServicePortTransportDescriptionReferenceUpdated
netconf-tls 6513 TCP NETCONF over TLS RFC 7589, RFC 9918 2024-01-24
-6513-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 6513, and is it reachable?

Linux

sudo ss -ltnup 'sport = :6513'      # process listening on 6513
sudo lsof -nP -i :6513

macOS

sudo lsof -nP -i :6513

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 6513 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 6513
netstat -ano | findstr :6513

From another machine

nmap -p 6513 -sV <host>
nc -zv <host> 6513

Block it in the firewall

sudo ufw deny 6513/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 6513" -Direction Inbound -LocalPort 6513 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 6513 used for?

Port 6513 is assigned by IANA to netconf-tls (NETCONF over TLS).

Is port 6513 TCP or UDP?

Port 6513 is registered for TCP.

Is it safe to open port 6513?

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 6513 is open?

On Linux run "ss -ltnup 'sport = :6513'", on macOS "lsof -nP -i :6513", and on Windows "netstat -ano | findstr :6513" to see the local process. From another machine, "nmap -p 6513 <host>" shows whether it is reachable.

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