HTTPfy

Port 4322 (trim-event)

IANA assigns port 4322 to trim-event: TRIM Event Service.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
trim-event TCP TRIM Event Service - -
trim-event UDP TRIM Event Service - -

Check what is listening on port 4322

Linux: is anything listening on TCP 4322?
sudo ss -tlnp 'sport = :4322'
Linux: UDP 4322
sudo ss -ulnp 'sport = :4322'
Linux / macOS: which process owns the port
sudo lsof -nP -i :4322
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':4322 '
Windows (Command Prompt)
netstat -ano | findstr :4322
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 4322 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 4322
From Windows
Test-NetConnection HOST -Port 4322
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 4322

Block port 4322 in the firewall

ufw
sudo ufw deny 4322/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 4322 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 4322 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 4322' -Direction Inbound -Protocol TCP -LocalPort 4322 -Action Block
ufw
sudo ufw deny 4322/udp
iptables
sudo iptables -A INPUT -p udp --dport 4322 -j DROP
nftables
sudo nft add rule inet filter input udp dport 4322 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 4322' -Direction Inbound -Protocol UDP -LocalPort 4322 -Action Block

Related ports

4320fdt-rcatp4321rwhois4323trim-ice4325geognosisadmin, geognosisman

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