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Port 3395 (dyna-lm)

IANA assigns port 3395 to dyna-lm: Dyna License Manager (Elam).

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
dyna-lm TCP Dyna License Manager (Elam) Anjana Iyer -
dyna-lm UDP Dyna License Manager (Elam) Anjana Iyer -

Check what is listening on port 3395

Linux: is anything listening on TCP 3395?
sudo ss -tlnp 'sport = :3395'
Linux: UDP 3395
sudo ss -ulnp 'sport = :3395'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3395
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3395 '
Windows (Command Prompt)
netstat -ano | findstr :3395
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3395 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3395
From Windows
Test-NetConnection HOST -Port 3395
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3395

Block port 3395 in the firewall

ufw
sudo ufw deny 3395/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3395 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3395 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3395' -Direction Inbound -Protocol TCP -LocalPort 3395 -Action Block
ufw
sudo ufw deny 3395/udp
iptables
sudo iptables -A INPUT -p udp --dport 3395 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3395 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3395' -Direction Inbound -Protocol UDP -LocalPort 3395 -Action Block

Related ports

3393d2k-tapestry13394d2k-tapestry23396printer-agent, printer_agent3397cloanto-lm

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