Port 41796 (crestron-cips)

IANA assigns port 41796 to crestron-cips: Crestron Secure Control Port.

Registered (user) port, 1024-49151 TCP

IANA assignment

Service nameProtoDescriptionAssigneeReference

crestron-cips TCP Crestron Secure Control Port Crestron Electronics -

Registry dates for this port: registered 2012-06-27, last modified 2019-10-17.

Linux: is anything listening on TCP 41796?

sudo ss -tlnp 'sport = :41796'

Linux / macOS: which process owns the port

sudo lsof -nP -i :41796

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':41796 '

Windows (Command Prompt)

netstat -ano | findstr :41796

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 41796 -State Listen | Select LocalAddress,OwningProcess

From another machine

nc -vz -w 5 HOST 41796

From Windows

Test-NetConnection HOST -Port 41796

ufw

sudo ufw deny 41796/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 41796 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 41796 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 41796' -Direction Inbound -Protocol TCP -LocalPort 41796 -Action Block

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