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// Other services

Port 1486: nms_topo_serv

Port 1486 is assigned by IANA to nms_topo_serv (nms_topo_serv), nms-topo-serv (nms_topo_serv IANA assigned this well-formed service name as a replacement for "nms_topo_serv".).

1486

How nms_topo_serv works

Other services
client:1486nms_topo_servresponse client:1486nms_topo_servresponse

The client sends a request to port 1486 and the nms_topo_serv service answers.

Transport
TCP · UDP
Exposure risk
not rated depends on the program listening
Encryption
Unknownnot stated by the registry
IANA status
Assigned2 registered services
Range
Registered (1024-49151)
Category
Other services
01 Security

Is port 1486 dangerous?

We have no specific security note for port 1486. 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 1486

ServicePortTransportDescriptionReferenceUpdated
nms_topo_serv 1486 TCP, UDP nms_topo_serv - -
nms-topo-serv 1486 TCP, UDP nms_topo_serv IANA assigned this well-formed service name as a replacement for "nms_topo_serv". - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1486, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1486'      # process listening on 1486
sudo lsof -nP -i :1486

macOS

sudo lsof -nP -i :1486

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1486 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1486
netstat -ano | findstr :1486

From another machine

nmap -p 1486 -sV <host>
sudo nmap -sU -p 1486 <host>
nc -zv <host> 1486

Block it in the firewall

sudo ufw deny 1486/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1486" -Direction Inbound -LocalPort 1486 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1486 used for?

Port 1486 is assigned by IANA to nms_topo_serv (nms_topo_serv), nms-topo-serv (nms_topo_serv IANA assigned this well-formed service name as a replacement for "nms_topo_serv".).

Is port 1486 TCP or UDP?

Port 1486 is registered for TCP and UDP.

Is it safe to open port 1486?

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 1486 is open?

On Linux run "ss -ltnup 'sport = :1486'", on macOS "lsof -nP -i :1486", and on Windows "netstat -ano | findstr :1486" to see the local process. From another machine, "nmap -p 1486 <host>" shows whether it is reachable.

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