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Port 3579 (ttat3lb)

IANA assigns port 3579 to ttat3lb: Tarantella Load Balancing.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
ttat3lb TCP Tarantella Load Balancing Jim Musgrave -
ttat3lb UDP Tarantella Load Balancing Jim Musgrave -

Registry dates for this port: registered 2002-08.

Check what is listening on port 3579

Linux: is anything listening on TCP 3579?
sudo ss -tlnp 'sport = :3579'
Linux: UDP 3579
sudo ss -ulnp 'sport = :3579'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3579
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3579 '
Windows (Command Prompt)
netstat -ano | findstr :3579
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3579 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3579
From Windows
Test-NetConnection HOST -Port 3579
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3579

Block port 3579 in the firewall

ufw
sudo ufw deny 3579/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3579 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3579 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3579' -Direction Inbound -Protocol TCP -LocalPort 3579 -Action Block
ufw
sudo ufw deny 3579/udp
iptables
sudo iptables -A INPUT -p udp --dport 3579 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3579 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3579' -Direction Inbound -Protocol UDP -LocalPort 3579 -Action Block

Related ports

3577config-port3578data-port3580nati-svrloc3581kfxaclicensing

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