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// Other services

Port 6935: EthoScan Service

Port 6935 is assigned by IANA to ethoscan (EthoScan Service).

6935

How ethoscan works

Other services
client:6935ethoscanresponse client:6935ethoscanresponse

The client sends a request to port 6935 and the ethoscan service answers.

Transport
TCP · 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
01 Security

Is port 6935 dangerous?

We have no specific security note for port 6935. 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 6935

ServicePortTransportDescriptionReferenceUpdated
ethoscan 6935 TCP, UDP EthoScan Service - 2011-06-10

// source: IANA service name and port number registry

03 Check it

Which program uses port 6935, and is it reachable?

Linux

sudo ss -ltnup 'sport = :6935'      # process listening on 6935
sudo lsof -nP -i :6935

macOS

sudo lsof -nP -i :6935

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 6935 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 6935
netstat -ano | findstr :6935

From another machine

nmap -p 6935 -sV <host>
sudo nmap -sU -p 6935 <host>
nc -zv <host> 6935

Block it in the firewall

sudo ufw deny 6935/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 6935" -Direction Inbound -LocalPort 6935 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 6935 used for?

Port 6935 is assigned by IANA to ethoscan (EthoScan Service).

Is port 6935 TCP or UDP?

Port 6935 is registered for TCP and UDP.

Is it safe to open port 6935?

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 6935 is open?

On Linux run "ss -ltnup 'sport = :6935'", on macOS "lsof -nP -i :6935", and on Windows "netstat -ano | findstr :6935" to see the local process. From another machine, "nmap -p 6935 <host>" shows whether it is reachable.

05 Related
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