Port 4704 (assuria-ins)

IANA assigns port 4704 to assuria-ins: Assuria Insider.

Registered (user) port, 1024-49151 TCP

IANA assignment

Service nameProtoDescriptionAssigneeReference

assuria-ins TCP Assuria Insider Nick Connor -

Registry dates for this port: registered 2010-06-30.

Linux: is anything listening on TCP 4704?

sudo ss -tlnp 'sport = :4704'

Linux / macOS: which process owns the port

sudo lsof -nP -i :4704

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':4704 '

Windows (Command Prompt)

netstat -ano | findstr :4704

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 4704 -State Listen | Select LocalAddress,OwningProcess

From another machine

nc -vz -w 5 HOST 4704

From Windows

Test-NetConnection HOST -Port 4704

ufw

sudo ufw deny 4704/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 4704 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 4704 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 4704' -Direction Inbound -Protocol TCP -LocalPort 4704 -Action Block

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