Port 4370 (elpro-tunnel, elpro_tunnel)

IANA assigns port 4370 to elpro-tunnel, elpro_tunnel: ELPRO V2 Protocol Tunnel IANA assigned this well-formed service name as a replacement for "elpro_tunnel"..

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference

elpro-tunnel TCP ELPRO V2 Protocol Tunnel IANA assigned this well-formed service name as a replacement for "elpro_tunnel". Harry Courtice -

elpro_tunnel TCP ELPRO V2 Protocol Tunnel
This entry is an alias to "elpro-tunnel". This entry is now historic, not usable for use with many common service discovery mechanisms. Harry Courtice -

elpro-tunnel UDP ELPRO V2 Protocol Tunnel IANA assigned this well-formed service name as a replacement for "elpro_tunnel". Harry Courtice -

elpro_tunnel UDP ELPRO V2 Protocol Tunnel
This entry is an alias to "elpro-tunnel". This entry is now historic, not usable for use with many common service discovery mechanisms. Harry Courtice -

Registry dates for this port: registered 2008-04-14.

Check what is listening on port 4370

Linux: is anything listening on TCP 4370?

sudo ss -tlnp 'sport = :4370'

Linux: UDP 4370

sudo ss -ulnp 'sport = :4370'

Linux / macOS: which process owns the port

sudo lsof -nP -i :4370

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':4370 '

Windows (Command Prompt)

netstat -ano | findstr :4370

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 4370 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine

nc -vz -w 5 HOST 4370

From Windows

Test-NetConnection HOST -Port 4370

UDP probe (no reply does not prove it is closed)

nc -vzu -w 5 HOST 4370

Block port 4370 in the firewall

ufw

sudo ufw deny 4370/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 4370 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 4370 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 4370' -Direction Inbound -Protocol TCP -LocalPort 4370 -Action Block

ufw

sudo ufw deny 4370/udp