HTTPfy

Port 2819 (fc-faultnotify)

IANA assigns port 2819 to fc-faultnotify: FC Fault Notification.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
fc-faultnotify TCP FC Fault Notification Dave Watkins -
fc-faultnotify UDP FC Fault Notification Dave Watkins -

Check what is listening on port 2819

Linux: is anything listening on TCP 2819?
sudo ss -tlnp 'sport = :2819'
Linux: UDP 2819
sudo ss -ulnp 'sport = :2819'
Linux / macOS: which process owns the port
sudo lsof -nP -i :2819
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':2819 '
Windows (Command Prompt)
netstat -ano | findstr :2819
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2819 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 2819
From Windows
Test-NetConnection HOST -Port 2819
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 2819

Block port 2819 in the firewall

ufw
sudo ufw deny 2819/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 2819 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 2819 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 2819' -Direction Inbound -Protocol TCP -LocalPort 2819 -Action Block
ufw
sudo ufw deny 2819/udp
iptables
sudo iptables -A INPUT -p udp --dport 2819 -j DROP
nftables
sudo nft add rule inet filter input udp dport 2819 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 2819' -Direction Inbound -Protocol UDP -LocalPort 2819 -Action Block

Related ports

2817nmsigport2818rmlnk2820univision2821vrts-at-port

All port numbers · Open port checker
Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.