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Port 3828 (neteh)

IANA assigns port 3828 to neteh: Netadmin Systems Event Handler.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
neteh TCP Netadmin Systems Event Handler - -
neteh UDP Netadmin Systems Event Handler - -

Check what is listening on port 3828

Linux: is anything listening on TCP 3828?
sudo ss -tlnp 'sport = :3828'
Linux: UDP 3828
sudo ss -ulnp 'sport = :3828'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3828
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3828 '
Windows (Command Prompt)
netstat -ano | findstr :3828
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3828 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3828
From Windows
Test-NetConnection HOST -Port 3828
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3828

Block port 3828 in the firewall

ufw
sudo ufw deny 3828/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3828 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3828 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3828' -Direction Inbound -Protocol TCP -LocalPort 3828 -Action Block
ufw
sudo ufw deny 3828/udp
iptables
sudo iptables -A INPUT -p udp --dport 3828 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3828 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3828' -Direction Inbound -Protocol UDP -LocalPort 3828 -Action Block

Related ports

3826warmux3827netmpi3829neteh-ext3830cernsysmgmtagt

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