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// Other services

Port 16161: Solaris SEA Port

Port 16161 is assigned by IANA to sun-sea-port (Solaris SEA Port).

16161

How sun-sea-port works

Other services
client:16161sun-sea-portresponse client:16161sun-sea-portresponse

The client sends a request to port 16161 and the sun-sea-port 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 16161 dangerous?

We have no specific security note for port 16161. 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 16161

ServicePortTransportDescriptionReferenceUpdated
sun-sea-port 16161 TCP, UDP Solaris SEA Port - 2003-10

// source: IANA service name and port number registry

03 Check it

Which program uses port 16161, and is it reachable?

Linux

sudo ss -ltnup 'sport = :16161'      # process listening on 16161
sudo lsof -nP -i :16161

macOS

sudo lsof -nP -i :16161

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 16161 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 16161
netstat -ano | findstr :16161

From another machine

nmap -p 16161 -sV <host>
sudo nmap -sU -p 16161 <host>
nc -zv <host> 16161

Block it in the firewall

sudo ufw deny 16161/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 16161" -Direction Inbound -LocalPort 16161 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 16161 used for?

Port 16161 is assigned by IANA to sun-sea-port (Solaris SEA Port).

Is port 16161 TCP or UDP?

Port 16161 is registered for TCP and UDP.

Is it safe to open port 16161?

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 16161 is open?

On Linux run "ss -ltnup 'sport = :16161'", on macOS "lsof -nP -i :16161", and on Windows "netstat -ano | findstr :16161" to see the local process. From another machine, "nmap -p 16161 <host>" shows whether it is reachable.

05 Related
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