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Port 1928 (emsd-port)

IANA assigns port 1928 to emsd-port: Expnd Maui Srvr Dscovr.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
emsd-port TCP Expnd Maui Srvr Dscovr Edo Yahav -
emsd-port UDP Expnd Maui Srvr Dscovr Edo Yahav -

Check what is listening on port 1928

Linux: is anything listening on TCP 1928?
sudo ss -tlnp 'sport = :1928'
Linux: UDP 1928
sudo ss -ulnp 'sport = :1928'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1928
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1928 '
Windows (Command Prompt)
netstat -ano | findstr :1928
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1928 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1928
From Windows
Test-NetConnection HOST -Port 1928
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1928

Block port 1928 in the firewall

ufw
sudo ufw deny 1928/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1928 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1928 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1928' -Direction Inbound -Protocol TCP -LocalPort 1928 -Action Block
ufw
sudo ufw deny 1928/udp
iptables
sudo iptables -A INPUT -p udp --dport 1928 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1928 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1928' -Direction Inbound -Protocol UDP -LocalPort 1928 -Action Block

Related ports

1926egs1927videte-cipc1929bandwiz-system1930driveappserver

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