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Port 605 (soap-beep)

IANA assigns port 605 to soap-beep: SOAP over BEEP.

Well-known (system) port, 0-1023 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
soap-beep TCP SOAP over BEEP - RFC 4227
soap-beep UDP SOAP over BEEP - RFC 4227

Check what is listening on port 605

Linux: is anything listening on TCP 605?
sudo ss -tlnp 'sport = :605'
Linux: UDP 605
sudo ss -ulnp 'sport = :605'
Linux / macOS: which process owns the port
sudo lsof -nP -i :605
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':605 '
Windows (Command Prompt)
netstat -ano | findstr :605
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 605 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 605
From Windows
Test-NetConnection HOST -Port 605
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 605

Block port 605 in the firewall

ufw
sudo ufw deny 605/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 605 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 605 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 605' -Direction Inbound -Protocol TCP -LocalPort 605 -Action Block
ufw
sudo ufw deny 605/udp
iptables
sudo iptables -A INPUT -p udp --dport 605 -j DROP
nftables
sudo nft add rule inet filter input udp dport 605 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 605' -Direction Inbound -Protocol UDP -LocalPort 605 -Action Block

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