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Port 4093 (pvxpluscs)

IANA assigns port 4093 to pvxpluscs: Pvx Plus CS Host.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
pvxpluscs TCP Pvx Plus CS Host Michael King -
pvxpluscs UDP Pvx Plus CS Host Michael King -

Registry dates for this port: registered 2006-07.

Check what is listening on port 4093

Linux: is anything listening on TCP 4093?
sudo ss -tlnp 'sport = :4093'
Linux: UDP 4093
sudo ss -ulnp 'sport = :4093'
Linux / macOS: which process owns the port
sudo lsof -nP -i :4093
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':4093 '
Windows (Command Prompt)
netstat -ano | findstr :4093
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 4093 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 4093
From Windows
Test-NetConnection HOST -Port 4093
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 4093

Block port 4093 in the firewall

ufw
sudo ufw deny 4093/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 4093 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 4093 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 4093' -Direction Inbound -Protocol TCP -LocalPort 4093 -Action Block
ufw
sudo ufw deny 4093/udp
iptables
sudo iptables -A INPUT -p udp --dport 4093 -j DROP
nftables
sudo nft add rule inet filter input udp dport 4093 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 4093' -Direction Inbound -Protocol UDP -LocalPort 4093 -Action Block

Related ports

4091ewinstaller4092ewdgs4094sysrqd4095xtgui

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