CyberHunter
Local dataset, no network
// Other services

Port 1649: kermit

Port 1649 is assigned by IANA to kermit (kermit).

1649

How kermit works

Other services
client:1649kermitresponse client:1649kermitresponse

The client sends a request to port 1649 and the kermit 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 1649 dangerous?

We have no specific security note for port 1649. 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 1649

ServicePortTransportDescriptionReferenceUpdated
kermit 1649 TCP, UDP kermit - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1649, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1649'      # process listening on 1649
sudo lsof -nP -i :1649

macOS

sudo lsof -nP -i :1649

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1649 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1649
netstat -ano | findstr :1649

From another machine

nmap -p 1649 -sV <host>
sudo nmap -sU -p 1649 <host>
nc -zv <host> 1649

Block it in the firewall

sudo ufw deny 1649/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1649" -Direction Inbound -LocalPort 1649 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1649 used for?

Port 1649 is assigned by IANA to kermit (kermit).

Is port 1649 TCP or UDP?

Port 1649 is registered for TCP and UDP.

Is it safe to open port 1649?

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 1649 is open?

On Linux run "ss -ltnup 'sport = :1649'", on macOS "lsof -nP -i :1649", and on Windows "netstat -ano | findstr :1649" to see the local process. From another machine, "nmap -p 1649 <host>" shows whether it is reachable.

05 Related
: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

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