HTTPfy

Port 1828 (itm-mcell-u)

IANA assigns port 1828 to itm-mcell-u.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
itm-mcell-u TCP itm-mcell-u Portnoy Boxman -
itm-mcell-u UDP itm-mcell-u Portnoy Boxman -

Check what is listening on port 1828

Linux: is anything listening on TCP 1828?
sudo ss -tlnp 'sport = :1828'
Linux: UDP 1828
sudo ss -ulnp 'sport = :1828'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1828
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1828 '
Windows (Command Prompt)
netstat -ano | findstr :1828
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1828 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1828
From Windows
Test-NetConnection HOST -Port 1828
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1828

Block port 1828 in the firewall

ufw
sudo ufw deny 1828/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1828 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1828 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1828' -Direction Inbound -Protocol TCP -LocalPort 1828 -Action Block
ufw
sudo ufw deny 1828/udp
iptables
sudo iptables -A INPUT -p udp --dport 1828 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1828 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1828' -Direction Inbound -Protocol UDP -LocalPort 1828 -Action Block

Related ports

1826ardt1827asi1829optika-emedia1830net8-cman

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