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Port 2208 (hpiod)

IANA assigns port 2208 to hpiod: HP I/O Backend.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
hpiod TCP HP I/O Backend David Suffield -
hpiod UDP HP I/O Backend David Suffield -

Registry dates for this port: registered 2006-05.

Check what is listening on port 2208

Linux: is anything listening on TCP 2208?
sudo ss -tlnp 'sport = :2208'
Linux: UDP 2208
sudo ss -ulnp 'sport = :2208'
Linux / macOS: which process owns the port
sudo lsof -nP -i :2208
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':2208 '
Windows (Command Prompt)
netstat -ano | findstr :2208
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2208 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 2208
From Windows
Test-NetConnection HOST -Port 2208
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 2208

Block port 2208 in the firewall

ufw
sudo ufw deny 2208/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 2208 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 2208 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 2208' -Direction Inbound -Protocol TCP -LocalPort 2208 -Action Block
ufw
sudo ufw deny 2208/udp
iptables
sudo iptables -A INPUT -p udp --dport 2208 -j DROP
nftables
sudo nft add rule inet filter input udp dport 2208 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 2208' -Direction Inbound -Protocol UDP -LocalPort 2208 -Action Block

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