HTTPfy

Port 2983 (netplan)

IANA assigns port 2983 to netplan: NETPLAN.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
netplan TCP NETPLAN Thomas Driemeyer -
netplan UDP NETPLAN Thomas Driemeyer -

Check what is listening on port 2983

Linux: is anything listening on TCP 2983?
sudo ss -tlnp 'sport = :2983'
Linux: UDP 2983
sudo ss -ulnp 'sport = :2983'
Linux / macOS: which process owns the port
sudo lsof -nP -i :2983
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':2983 '
Windows (Command Prompt)
netstat -ano | findstr :2983
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2983 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 2983
From Windows
Test-NetConnection HOST -Port 2983
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 2983

Block port 2983 in the firewall

ufw
sudo ufw deny 2983/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 2983 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 2983 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 2983' -Direction Inbound -Protocol TCP -LocalPort 2983 -Action Block
ufw
sudo ufw deny 2983/udp
iptables
sudo iptables -A INPUT -p udp --dport 2983 -j DROP
nftables
sudo nft add rule inet filter input udp dport 2983 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 2983' -Direction Inbound -Protocol UDP -LocalPort 2983 -Action Block

Related ports

2981mylxamport2982iwb-whiteboard2984hpidsadmin2985hpidsagent

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