HTTPfy

Port 6480 (sun-sr-http)

IANA assigns port 6480 to sun-sr-http: Service Registry Default HTTP Domain.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
sun-sr-http TCP Service Registry Default HTTP Domain Paul Sterk -
sun-sr-http UDP Service Registry Default HTTP Domain Paul Sterk -

Registry dates for this port: registered 2006-03.

Check what is listening on port 6480

Linux: is anything listening on TCP 6480?
sudo ss -tlnp 'sport = :6480'
Linux: UDP 6480
sudo ss -ulnp 'sport = :6480'
Linux / macOS: which process owns the port
sudo lsof -nP -i :6480
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':6480 '
Windows (Command Prompt)
netstat -ano | findstr :6480
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 6480 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 6480
From Windows
Test-NetConnection HOST -Port 6480
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 6480

Block port 6480 in the firewall

ufw
sudo ufw deny 6480/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 6480 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 6480 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 6480' -Direction Inbound -Protocol TCP -LocalPort 6480 -Action Block
ufw
sudo ufw deny 6480/udp
iptables
sudo iptables -A INPUT -p udp --dport 6480 -j DROP
nftables
sudo nft add rule inet filter input udp dport 6480 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 6480' -Direction Inbound -Protocol UDP -LocalPort 6480 -Action Block

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