CyberHunter
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// Other services

Port 8206: LM Dta

Port 8206 is assigned by IANA to lm-dta (LM Dta).

8206

How lm-dta works

Other services
client:8206lm-dtaresponse client:8206lm-dtaresponse

The client sends a request to port 8206 and the lm-dta 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 8206 dangerous?

We have no specific security note for port 8206. 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 8206

ServicePortTransportDescriptionReferenceUpdated
lm-dta 8206 TCP, UDP LM Dta - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 8206, and is it reachable?

Linux

sudo ss -ltnup 'sport = :8206'      # process listening on 8206
sudo lsof -nP -i :8206

macOS

sudo lsof -nP -i :8206

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 8206 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 8206
netstat -ano | findstr :8206

From another machine

nmap -p 8206 -sV <host>
sudo nmap -sU -p 8206 <host>
nc -zv <host> 8206

Block it in the firewall

sudo ufw deny 8206/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 8206" -Direction Inbound -LocalPort 8206 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 8206 used for?

Port 8206 is assigned by IANA to lm-dta (LM Dta).

Is port 8206 TCP or UDP?

Port 8206 is registered for TCP and UDP.

Is it safe to open port 8206?

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 8206 is open?

On Linux run "ss -ltnup 'sport = :8206'", on macOS "lsof -nP -i :8206", and on Windows "netstat -ano | findstr :8206" to see the local process. From another machine, "nmap -p 8206 <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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