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Port 3187 (odi-port)

IANA assigns port 3187 to odi-port: Open Design Listen Port.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
odi-port TCP Open Design Listen Port Phivos Aristides -
odi-port UDP Open Design Listen Port Phivos Aristides -

Check what is listening on port 3187

Linux: is anything listening on TCP 3187?
sudo ss -tlnp 'sport = :3187'
Linux: UDP 3187
sudo ss -ulnp 'sport = :3187'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3187
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3187 '
Windows (Command Prompt)
netstat -ano | findstr :3187
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3187 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3187
From Windows
Test-NetConnection HOST -Port 3187
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3187

Block port 3187 in the firewall

ufw
sudo ufw deny 3187/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3187 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3187 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3187' -Direction Inbound -Protocol TCP -LocalPort 3187 -Action Block
ufw
sudo ufw deny 3187/udp
iptables
sudo iptables -A INPUT -p udp --dport 3187 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3187 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3187' -Direction Inbound -Protocol UDP -LocalPort 3187 -Action Block

Related ports

3185smpppd3186iiw-port3188brcm-comm-port3189pcle-infex

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