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Port 3518 (artifact-msg)

IANA assigns port 3518 to artifact-msg: Artifact Message Server.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
artifact-msg TCP Artifact Message Server Ron Capwell -
artifact-msg UDP Artifact Message Server Ron Capwell -

Registry dates for this port: registered 2002-06.

Check what is listening on port 3518

Linux: is anything listening on TCP 3518?
sudo ss -tlnp 'sport = :3518'
Linux: UDP 3518
sudo ss -ulnp 'sport = :3518'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3518
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3518 '
Windows (Command Prompt)
netstat -ano | findstr :3518
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3518 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3518
From Windows
Test-NetConnection HOST -Port 3518
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3518

Block port 3518 in the firewall

ufw
sudo ufw deny 3518/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3518 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3518 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3518' -Direction Inbound -Protocol TCP -LocalPort 3518 -Action Block
ufw
sudo ufw deny 3518/udp
iptables
sudo iptables -A INPUT -p udp --dport 3518 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3518 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3518' -Direction Inbound -Protocol UDP -LocalPort 3518 -Action Block

Related ports

3516smartcard-port3517802-11-iapp3519nvmsgd, galileo3520galileolog

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