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// Other services

Port 6701: KTI/ICAD Nameserver

Port 6701 is assigned by IANA to kti-icad-srvr (KTI/ICAD Nameserver).

6701

How kti-icad-srvr works

Other services
client:6701kti-icad-srvrresponse client:6701kti-icad-srvrresponse

The client sends a request to port 6701 and the kti-icad-srvr 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 6701 dangerous?

We have no specific security note for port 6701. 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 6701

ServicePortTransportDescriptionReferenceUpdated
kti-icad-srvr 6701 TCP, UDP KTI/ICAD Nameserver - -
-6701-Unassigned--

// source: IANA service name and port number registry

03 Check it

Which program uses port 6701, and is it reachable?

Linux

sudo ss -ltnup 'sport = :6701'      # process listening on 6701
sudo lsof -nP -i :6701

macOS

sudo lsof -nP -i :6701

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 6701 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 6701
netstat -ano | findstr :6701

From another machine

nmap -p 6701 -sV <host>
sudo nmap -sU -p 6701 <host>
nc -zv <host> 6701

Block it in the firewall

sudo ufw deny 6701/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 6701" -Direction Inbound -LocalPort 6701 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 6701 used for?

Port 6701 is assigned by IANA to kti-icad-srvr (KTI/ICAD Nameserver).

Is port 6701 TCP or UDP?

Port 6701 is registered for TCP and UDP.

Is it safe to open port 6701?

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 6701 is open?

On Linux run "ss -ltnup 'sport = :6701'", on macOS "lsof -nP -i :6701", and on Windows "netstat -ano | findstr :6701" to see the local process. From another machine, "nmap -p 6701 <host>" shows whether it is reachable.

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