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Port 2816 (lbc-watchdog)

IANA assigns port 2816 to lbc-watchdog: LBC Watchdog.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
lbc-watchdog TCP LBC Watchdog Akiyoshi Ochi -
lbc-watchdog UDP LBC Watchdog Akiyoshi Ochi -

Check what is listening on port 2816

Linux: is anything listening on TCP 2816?
sudo ss -tlnp 'sport = :2816'
Linux: UDP 2816
sudo ss -ulnp 'sport = :2816'
Linux / macOS: which process owns the port
sudo lsof -nP -i :2816
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':2816 '
Windows (Command Prompt)
netstat -ano | findstr :2816
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2816 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 2816
From Windows
Test-NetConnection HOST -Port 2816
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 2816

Block port 2816 in the firewall

ufw
sudo ufw deny 2816/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 2816 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 2816 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 2816' -Direction Inbound -Protocol TCP -LocalPort 2816 -Action Block
ufw
sudo ufw deny 2816/udp
iptables
sudo iptables -A INPUT -p udp --dport 2816 -j DROP
nftables
sudo nft add rule inet filter input udp dport 2816 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 2816' -Direction Inbound -Protocol UDP -LocalPort 2816 -Action Block

Related ports

2814llm-csv2815lbc-measure2817nmsigport2818rmlnk

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