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Port 17754 (zep)

IANA assigns port 17754 to zep: Encap. ZigBee Packets.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
zep TCP Encap. ZigBee Packets Fred Fierling -
zep UDP Encap. ZigBee Packets Fred Fierling -

Registry dates for this port: registered 2006-02.

Check what is listening on port 17754

Linux: is anything listening on TCP 17754?
sudo ss -tlnp 'sport = :17754'
Linux: UDP 17754
sudo ss -ulnp 'sport = :17754'
Linux / macOS: which process owns the port
sudo lsof -nP -i :17754
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':17754 '
Windows (Command Prompt)
netstat -ano | findstr :17754
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 17754 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 17754
From Windows
Test-NetConnection HOST -Port 17754
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 17754

Block port 17754 in the firewall

ufw
sudo ufw deny 17754/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 17754 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 17754 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 17754' -Direction Inbound -Protocol TCP -LocalPort 17754 -Action Block
ufw
sudo ufw deny 17754/udp
iptables
sudo iptables -A INPUT -p udp --dport 17754 -j DROP
nftables
sudo nft add rule inet filter input udp dport 17754 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 17754' -Direction Inbound -Protocol UDP -LocalPort 17754 -Action Block

Related ports

17555ailith17729ea17755zigbee-ip17756zigbee-ips

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