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Port 3894 (syam-agent)

IANA assigns port 3894 to syam-agent: SyAM Agent Port.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
syam-agent TCP SyAM Agent Port Michael Daniele -
syam-agent UDP SyAM Agent Port Michael Daniele -

Registry dates for this port: registered 2003-10.

Check what is listening on port 3894

Linux: is anything listening on TCP 3894?
sudo ss -tlnp 'sport = :3894'
Linux: UDP 3894
sudo ss -ulnp 'sport = :3894'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3894
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3894 '
Windows (Command Prompt)
netstat -ano | findstr :3894
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3894 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3894
From Windows
Test-NetConnection HOST -Port 3894
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3894

Block port 3894 in the firewall

ufw
sudo ufw deny 3894/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3894 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3894 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3894' -Direction Inbound -Protocol TCP -LocalPort 3894 -Action Block
ufw
sudo ufw deny 3894/udp
iptables
sudo iptables -A INPUT -p udp --dport 3894 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3894 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3894' -Direction Inbound -Protocol UDP -LocalPort 3894 -Action Block

Related ports

3892pcc-image-port3893cgi-starapi3895syam-smc3896sdo-tls

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