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Port 3628 (ept-machine)

IANA assigns port 3628 to ept-machine: EPT Machine Interface.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
ept-machine TCP EPT Machine Interface Victor H Farrace -
ept-machine UDP EPT Machine Interface Victor H Farrace -

Registry dates for this port: registered 2002-10.

Check what is listening on port 3628

Linux: is anything listening on TCP 3628?
sudo ss -tlnp 'sport = :3628'
Linux: UDP 3628
sudo ss -ulnp 'sport = :3628'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3628
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3628 '
Windows (Command Prompt)
netstat -ano | findstr :3628
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3628 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3628
From Windows
Test-NetConnection HOST -Port 3628
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3628

Block port 3628 in the firewall

ufw
sudo ufw deny 3628/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3628 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3628 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3628' -Direction Inbound -Protocol TCP -LocalPort 3628 -Action Block
ufw
sudo ufw deny 3628/udp
iptables
sudo iptables -A INPUT -p udp --dport 3628 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3628 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3628' -Direction Inbound -Protocol UDP -LocalPort 3628 -Action Block

Related ports

3626bvcdaemon-port3627jamserverport3629escvpnet3630cs-remote-db

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