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Port 11876 (xoraya)

IANA assigns port 11876 to xoraya: X2E Xoraya Multichannel protocol.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
xoraya TCP X2E Xoraya Multichannel protocol Hannes K -
xoraya UDP X2E Xoraya Multichannel protocol Hannes K -

Registry dates for this port: registered 2010-09-13.

Check what is listening on port 11876

Linux: is anything listening on TCP 11876?
sudo ss -tlnp 'sport = :11876'
Linux: UDP 11876
sudo ss -ulnp 'sport = :11876'
Linux / macOS: which process owns the port
sudo lsof -nP -i :11876
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':11876 '
Windows (Command Prompt)
netstat -ano | findstr :11876
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 11876 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 11876
From Windows
Test-NetConnection HOST -Port 11876
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 11876

Block port 11876 in the firewall

ufw
sudo ufw deny 11876/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 11876 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 11876 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 11876' -Direction Inbound -Protocol TCP -LocalPort 11876 -Action Block
ufw
sudo ufw deny 11876/udp
iptables
sudo iptables -A INPUT -p udp --dport 11876 -j DROP
nftables
sudo nft add rule inet filter input udp dport 11876 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 11876' -Direction Inbound -Protocol UDP -LocalPort 11876 -Action Block

Related ports

11751intrepid-ssl11796lanschool, lanschool-mpt11877x2e-disc11967sysinfo-sp

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