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Port 10288 (blocks)

IANA assigns port 10288 to blocks: Blocks.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
blocks TCP Blocks Carl Malamud -
blocks UDP Blocks Carl Malamud -

Check what is listening on port 10288

Linux: is anything listening on TCP 10288?
sudo ss -tlnp 'sport = :10288'
Linux: UDP 10288
sudo ss -ulnp 'sport = :10288'
Linux / macOS: which process owns the port
sudo lsof -nP -i :10288
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':10288 '
Windows (Command Prompt)
netstat -ano | findstr :10288
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 10288 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 10288
From Windows
Test-NetConnection HOST -Port 10288
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 10288

Block port 10288 in the firewall

ufw
sudo ufw deny 10288/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 10288 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 10288 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 10288' -Direction Inbound -Protocol TCP -LocalPort 10288 -Action Block
ufw
sudo ufw deny 10288/udp
iptables
sudo iptables -A INPUT -p udp --dport 10288 -j DROP
nftables
sudo nft add rule inet filter input udp dport 10288 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 10288' -Direction Inbound -Protocol UDP -LocalPort 10288 -Action Block

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