HTTPfy

Port 1463 (nucleus)

IANA assigns port 1463 to nucleus: Nucleus.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
nucleus TCP Nucleus Venky Nagar -
nucleus UDP Nucleus Venky Nagar -

Check what is listening on port 1463

Linux: is anything listening on TCP 1463?
sudo ss -tlnp 'sport = :1463'
Linux: UDP 1463
sudo ss -ulnp 'sport = :1463'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1463
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1463 '
Windows (Command Prompt)
netstat -ano | findstr :1463
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1463 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1463
From Windows
Test-NetConnection HOST -Port 1463
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1463

Block port 1463 in the firewall

ufw
sudo ufw deny 1463/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1463 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1463 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1463' -Direction Inbound -Protocol TCP -LocalPort 1463 -Action Block
ufw
sudo ufw deny 1463/udp
iptables
sudo iptables -A INPUT -p udp --dport 1463 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1463 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1463' -Direction Inbound -Protocol UDP -LocalPort 1463 -Action Block

Related ports

1461ibm-wrless-lan, ibm_wrless_lan1462world-lm1464msl-lmd, msl_lmd1465pipes

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