Port 6485 (sun-sr-iiop)

IANA assigns port 6485 to sun-sr-iiop: Service Registry Default IIOP Domain.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference

sun-sr-iiop TCP Service Registry Default IIOP Domain Paul Sterk -

sun-sr-iiop UDP Service Registry Default IIOP Domain Paul Sterk -

Registry dates for this port: registered 2006-03.

Linux: is anything listening on TCP 6485?

sudo ss -tlnp 'sport = :6485'

Linux: UDP 6485

sudo ss -ulnp 'sport = :6485'

Linux / macOS: which process owns the port

sudo lsof -nP -i :6485

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':6485 '

Windows (Command Prompt)

netstat -ano | findstr :6485

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 6485 -State Listen | Select LocalAddress,OwningProcess

From another machine

nc -vz -w 5 HOST 6485

From Windows

Test-NetConnection HOST -Port 6485

UDP probe (no reply does not prove it is closed)

nc -vzu -w 5 HOST 6485

ufw

sudo ufw deny 6485/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 6485 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 6485 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 6485' -Direction Inbound -Protocol TCP -LocalPort 6485 -Action Block

ufw

sudo ufw deny 6485/udp

iptables

sudo iptables -A INPUT -p udp --dport 6485 -j DROP

nftables

sudo nft add rule inet filter input udp dport 6485 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block UDP 6485' -Direction Inbound -Protocol UDP -LocalPort 6485 -Action Block

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