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// Other services

Port 8101: Logical Domains Migration

Port 8101 is assigned by IANA to ldoms-migr (Logical Domains Migration).

8101

How ldoms-migr works

Other services
client:8101ldoms-migrresponse client:8101ldoms-migrresponse

The client sends a request to port 8101 and the ldoms-migr service answers.

Transport
TCP
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 8101 dangerous?

We have no specific security note for port 8101. 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 8101

ServicePortTransportDescriptionReferenceUpdated
ldoms-migr 8101 TCP Logical Domains Migration - 2009-01-16
-8101-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 8101, and is it reachable?

Linux

sudo ss -ltnup 'sport = :8101'      # process listening on 8101
sudo lsof -nP -i :8101

macOS

sudo lsof -nP -i :8101

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 8101 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 8101
netstat -ano | findstr :8101

From another machine

nmap -p 8101 -sV <host>
nc -zv <host> 8101

Block it in the firewall

sudo ufw deny 8101/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 8101" -Direction Inbound -LocalPort 8101 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 8101 used for?

Port 8101 is assigned by IANA to ldoms-migr (Logical Domains Migration).

Is port 8101 TCP or UDP?

Port 8101 is registered for TCP.

Is it safe to open port 8101?

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 8101 is open?

On Linux run "ss -ltnup 'sport = :8101'", on macOS "lsof -nP -i :8101", and on Windows "netstat -ano | findstr :8101" to see the local process. From another machine, "nmap -p 8101 <host>" shows whether it is reachable.

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