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Port 3597 (a14)

IANA assigns port 3597 to a14: A14 (AN-to-SC/MM).

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
a14 TCP A14 (AN-to-SC/MM) - -
a14 UDP A14 (AN-to-SC/MM) - -

Check what is listening on port 3597

Linux: is anything listening on TCP 3597?
sudo ss -tlnp 'sport = :3597'
Linux: UDP 3597
sudo ss -ulnp 'sport = :3597'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3597
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3597 '
Windows (Command Prompt)
netstat -ano | findstr :3597
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3597 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3597
From Windows
Test-NetConnection HOST -Port 3597
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3597

Block port 3597 in the firewall

ufw
sudo ufw deny 3597/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3597 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3597 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3597' -Direction Inbound -Protocol TCP -LocalPort 3597 -Action Block
ufw
sudo ufw deny 3597/udp
iptables
sudo iptables -A INPUT -p udp --dport 3597 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3597 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3597' -Direction Inbound -Protocol UDP -LocalPort 3597 -Action Block

Related ports

3595shareapp3596iw-mmogame3598a153599quasar-server

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