HTTPfy

Port 8763 (mc-appserver)

IANA assigns port 8763 to mc-appserver: MC-APPSERVER.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
mc-appserver TCP MC-APPSERVER Romeo Kasanwidjojo -
mc-appserver UDP MC-APPSERVER Romeo Kasanwidjojo -

Check what is listening on port 8763

Linux: is anything listening on TCP 8763?
sudo ss -tlnp 'sport = :8763'
Linux: UDP 8763
sudo ss -ulnp 'sport = :8763'
Linux / macOS: which process owns the port
sudo lsof -nP -i :8763
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':8763 '
Windows (Command Prompt)
netstat -ano | findstr :8763
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 8763 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 8763
From Windows
Test-NetConnection HOST -Port 8763
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 8763

Block port 8763 in the firewall

ufw
sudo ufw deny 8763/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 8763 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 8763 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 8763' -Direction Inbound -Protocol TCP -LocalPort 8763 -Action Block
ufw
sudo ufw deny 8763/udp
iptables
sudo iptables -A INPUT -p udp --dport 8763 -j DROP
nftables
sudo nft add rule inet filter input udp dport 8763 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 8763' -Direction Inbound -Protocol UDP -LocalPort 8763 -Action Block

Related ports

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