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Port 1776 (femis)

IANA assigns port 1776 to femis: Federal Emergency Management Information System.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
femis TCP Federal Emergency Management Information System Larry Gerhardstein -
femis UDP Federal Emergency Management Information System Larry Gerhardstein -

Check what is listening on port 1776

Linux: is anything listening on TCP 1776?
sudo ss -tlnp 'sport = :1776'
Linux: UDP 1776
sudo ss -ulnp 'sport = :1776'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1776
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1776 '
Windows (Command Prompt)
netstat -ano | findstr :1776
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1776 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1776
From Windows
Test-NetConnection HOST -Port 1776
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1776

Block port 1776 in the firewall

ufw
sudo ufw deny 1776/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1776 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1776 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1776' -Direction Inbound -Protocol TCP -LocalPort 1776 -Action Block
ufw
sudo ufw deny 1776/udp
iptables
sudo iptables -A INPUT -p udp --dport 1776 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1776 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1776' -Direction Inbound -Protocol UDP -LocalPort 1776 -Action Block

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Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.