HTTPfy

Port 2328 (netrix-sftm)

IANA assigns port 2328 to netrix-sftm: Netrix SFTM.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
netrix-sftm TCP Netrix SFTM Garrett Herschleb -
netrix-sftm UDP Netrix SFTM Garrett Herschleb -

Check what is listening on port 2328

Linux: is anything listening on TCP 2328?
sudo ss -tlnp 'sport = :2328'
Linux: UDP 2328
sudo ss -ulnp 'sport = :2328'
Linux / macOS: which process owns the port
sudo lsof -nP -i :2328
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':2328 '
Windows (Command Prompt)
netstat -ano | findstr :2328
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2328 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 2328
From Windows
Test-NetConnection HOST -Port 2328
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 2328

Block port 2328 in the firewall

ufw
sudo ufw deny 2328/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 2328 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 2328 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 2328' -Direction Inbound -Protocol TCP -LocalPort 2328 -Action Block
ufw
sudo ufw deny 2328/udp
iptables
sudo iptables -A INPUT -p udp --dport 2328 -j DROP
nftables
sudo nft add rule inet filter input udp dport 2328 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 2328' -Direction Inbound -Protocol UDP -LocalPort 2328 -Action Block

Related ports

2326idcp2327xingcsm2329nvd2330tscchat

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