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Port 2158 (touchnetplus)

IANA assigns port 2158 to touchnetplus: TouchNetPlus Service.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
touchnetplus TCP TouchNetPlus Service Brian Toothill -
touchnetplus UDP TouchNetPlus Service Brian Toothill -

Registry dates for this port: registered 2008-03-06.

Check what is listening on port 2158

Linux: is anything listening on TCP 2158?
sudo ss -tlnp 'sport = :2158'
Linux: UDP 2158
sudo ss -ulnp 'sport = :2158'
Linux / macOS: which process owns the port
sudo lsof -nP -i :2158
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':2158 '
Windows (Command Prompt)
netstat -ano | findstr :2158
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2158 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 2158
From Windows
Test-NetConnection HOST -Port 2158
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 2158

Block port 2158 in the firewall

ufw
sudo ufw deny 2158/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 2158 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 2158 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 2158' -Direction Inbound -Protocol TCP -LocalPort 2158 -Action Block
ufw
sudo ufw deny 2158/udp
iptables
sudo iptables -A INPUT -p udp --dport 2158 -j DROP
nftables
sudo nft add rule inet filter input udp dport 2158 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 2158' -Direction Inbound -Protocol UDP -LocalPort 2158 -Action Block

Related ports

2156trp2157xnds2159gdbremote2160apc-2160

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