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Port 1225 (slinkysearch)

IANA assigns port 1225 to slinkysearch: SLINKYSEARCH.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
slinkysearch TCP SLINKYSEARCH Desmond Chan -
slinkysearch UDP SLINKYSEARCH Desmond Chan -

Check what is listening on port 1225

Linux: is anything listening on TCP 1225?
sudo ss -tlnp 'sport = :1225'
Linux: UDP 1225
sudo ss -ulnp 'sport = :1225'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1225
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1225 '
Windows (Command Prompt)
netstat -ano | findstr :1225
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1225 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1225
From Windows
Test-NetConnection HOST -Port 1225
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1225

Block port 1225 in the firewall

ufw
sudo ufw deny 1225/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1225 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1225 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1225' -Direction Inbound -Protocol TCP -LocalPort 1225 -Action Block
ufw
sudo ufw deny 1225/udp
iptables
sudo iptables -A INPUT -p udp --dport 1225 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1225 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1225' -Direction Inbound -Protocol UDP -LocalPort 1225 -Action Block

Related ports

1223tgp1224vpnz1226stgxfws1227dns2go

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