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// Other services

Port 1776: Federal Emergency Management Information System

Port 1776 is assigned by IANA to femis (Federal Emergency Management Information System).

1776

How femis works

Other services
client:1776femisresponse client:1776femisresponse

The client sends a request to port 1776 and the femis 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 1776 dangerous?

We have no specific security note for port 1776. 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 1776

ServicePortTransportDescriptionReferenceUpdated
femis 1776 TCP, UDP Federal Emergency Management Information System - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1776, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1776'      # process listening on 1776
sudo lsof -nP -i :1776

macOS

sudo lsof -nP -i :1776

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1776 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1776
netstat -ano | findstr :1776

From another machine

nmap -p 1776 -sV <host>
sudo nmap -sU -p 1776 <host>
nc -zv <host> 1776

Block it in the firewall

sudo ufw deny 1776/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1776" -Direction Inbound -LocalPort 1776 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1776 used for?

Port 1776 is assigned by IANA to femis (Federal Emergency Management Information System).

Is port 1776 TCP or UDP?

Port 1776 is registered for TCP and UDP.

Is it safe to open port 1776?

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 1776 is open?

On Linux run "ss -ltnup 'sport = :1776'", on macOS "lsof -nP -i :1776", and on Windows "netstat -ano | findstr :1776" to see the local process. From another machine, "nmap -p 1776 <host>" shows whether it is reachable.

05 Related
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