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Port 175 (vmnet)

IANA assigns port 175 to vmnet: VMNET.

Well-known (system) port, 0-1023 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
vmnet TCP VMNET Christopher Tengi -
vmnet UDP VMNET Christopher Tengi -

Check what is listening on port 175

Linux: is anything listening on TCP 175?
sudo ss -tlnp 'sport = :175'
Linux: UDP 175
sudo ss -ulnp 'sport = :175'
Linux / macOS: which process owns the port
sudo lsof -nP -i :175
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':175 '
Windows (Command Prompt)
netstat -ano | findstr :175
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 175 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 175
From Windows
Test-NetConnection HOST -Port 175
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 175

Block port 175 in the firewall

ufw
sudo ufw deny 175/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 175 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 175 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 175' -Direction Inbound -Protocol TCP -LocalPort 175 -Action Block
ufw
sudo ufw deny 175/udp
iptables
sudo iptables -A INPUT -p udp --dport 175 -j DROP
nftables
sudo nft add rule inet filter input udp dport 175 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 175' -Direction Inbound -Protocol UDP -LocalPort 175 -Action Block

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