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Port 41795 (crestron-ctp)

IANA assigns port 41795 to crestron-ctp: Crestron Terminal Port.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
crestron-ctp TCP Crestron Terminal Port Crestron Electronics -
crestron-ctp UDP Crestron Terminal Port Crestron Electronics -

Registry dates for this port: registered 2003-01, last modified 2019-10-17.

Check what is listening on port 41795

Linux: is anything listening on TCP 41795?
sudo ss -tlnp 'sport = :41795'
Linux: UDP 41795
sudo ss -ulnp 'sport = :41795'
Linux / macOS: which process owns the port
sudo lsof -nP -i :41795
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':41795 '
Windows (Command Prompt)
netstat -ano | findstr :41795
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 41795 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 41795
From Windows
Test-NetConnection HOST -Port 41795
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 41795

Block port 41795 in the firewall

ufw
sudo ufw deny 41795/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 41795 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 41795 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 41795' -Direction Inbound -Protocol TCP -LocalPort 41795 -Action Block
ufw
sudo ufw deny 41795/udp
iptables
sudo iptables -A INPUT -p udp --dport 41795 -j DROP
nftables
sudo nft add rule inet filter input udp dport 41795 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 41795' -Direction Inbound -Protocol UDP -LocalPort 41795 -Action Block

Related ports

41230z-wave-s41794crestron-cip41796crestron-cips41797crestron-ctps

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