Port 17777 (sw-orion)

IANA assigns port 17777 to sw-orion: SolarWinds Orion.

Registered (user) port, 1024-49151 TCP

IANA assignment

Service nameProtoDescriptionAssigneeReference

sw-orion TCP SolarWinds Orion Joel Dolisy -

Registry dates for this port: registered 2008-09-10.

Linux: is anything listening on TCP 17777?

sudo ss -tlnp 'sport = :17777'

Linux / macOS: which process owns the port

sudo lsof -nP -i :17777

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':17777 '

Windows (Command Prompt)

netstat -ano | findstr :17777

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 17777 -State Listen | Select LocalAddress,OwningProcess

From another machine

nc -vz -w 5 HOST 17777

From Windows

Test-NetConnection HOST -Port 17777

ufw

sudo ufw deny 17777/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 17777 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 17777 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 17777' -Direction Inbound -Protocol TCP -LocalPort 17777 -Action Block

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