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Port 4346 (elanlm)

IANA assigns port 4346 to elanlm: ELAN LM.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
elanlm TCP ELAN LM Paul Ballew -
elanlm UDP ELAN LM Paul Ballew -

Check what is listening on port 4346

Linux: is anything listening on TCP 4346?
sudo ss -tlnp 'sport = :4346'
Linux: UDP 4346
sudo ss -ulnp 'sport = :4346'
Linux / macOS: which process owns the port
sudo lsof -nP -i :4346
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':4346 '
Windows (Command Prompt)
netstat -ano | findstr :4346
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 4346 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 4346
From Windows
Test-NetConnection HOST -Port 4346
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 4346

Block port 4346 in the firewall

ufw
sudo ufw deny 4346/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 4346 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 4346 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 4346' -Direction Inbound -Protocol TCP -LocalPort 4346 -Action Block
ufw
sudo ufw deny 4346/udp
iptables
sudo iptables -A INPUT -p udp --dport 4346 -j DROP
nftables
sudo nft add rule inet filter input udp dport 4346 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 4346' -Direction Inbound -Protocol UDP -LocalPort 4346 -Action Block

Related ports

4344vinainstall4345m4-network-as4347lansurveyor4348itose

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