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Port 16360 (netserialext1)

IANA assigns port 16360 to netserialext1: Network Serial Extension Ports One.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
netserialext1 TCP Network Serial Extension Ports One Michael J Hoy -
netserialext1 UDP Network Serial Extension Ports One Michael J Hoy -

Check what is listening on port 16360

Linux: is anything listening on TCP 16360?
sudo ss -tlnp 'sport = :16360'
Linux: UDP 16360
sudo ss -ulnp 'sport = :16360'
Linux / macOS: which process owns the port
sudo lsof -nP -i :16360
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':16360 '
Windows (Command Prompt)
netstat -ano | findstr :16360
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 16360 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 16360
From Windows
Test-NetConnection HOST -Port 16360
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 16360

Block port 16360 in the firewall

ufw
sudo ufw deny 16360/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 16360 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 16360 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 16360' -Direction Inbound -Protocol TCP -LocalPort 16360 -Action Block
ufw
sudo ufw deny 16360/udp
iptables
sudo iptables -A INPUT -p udp --dport 16360 -j DROP
nftables
sudo nft add rule inet filter input udp dport 16360 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 16360' -Direction Inbound -Protocol UDP -LocalPort 16360 -Action Block

Related ports

16310pduncs16311pdefmns16361netserialext216367netserialext3

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