HTTPfy

Port 9183 (sirius-agent)

IANA assigns port 9183 to sirius-agent: Sirius Configuration Agent.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
sirius-agent TCP Sirius Configuration Agent Sirius Computer Inc -
sirius-agent UDP Sirius Configuration Agent Sirius Computer Inc -

Registry dates for this port: registered 2026-03-09.

Check what is listening on port 9183

Linux: is anything listening on TCP 9183?
sudo ss -tlnp 'sport = :9183'
Linux: UDP 9183
sudo ss -ulnp 'sport = :9183'
Linux / macOS: which process owns the port
sudo lsof -nP -i :9183
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':9183 '
Windows (Command Prompt)
netstat -ano | findstr :9183
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 9183 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 9183
From Windows
Test-NetConnection HOST -Port 9183
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 9183

Block port 9183 in the firewall

ufw
sudo ufw deny 9183/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 9183 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 9183 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 9183' -Direction Inbound -Protocol TCP -LocalPort 9183 -Action Block
ufw
sudo ufw deny 9183/udp
iptables
sudo iptables -A INPUT -p udp --dport 9183 -j DROP
nftables
sudo nft add rule inet filter input udp dport 9183 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 9183' -Direction Inbound -Protocol UDP -LocalPort 9183 -Action Block

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