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Port 1438 (eicon-server)

IANA assigns port 1438 to eicon-server: Eicon Security Agent/Server.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
eicon-server TCP Eicon Security Agent/Server - -
eicon-server UDP Eicon Security Agent/Server - -

Check what is listening on port 1438

Linux: is anything listening on TCP 1438?
sudo ss -tlnp 'sport = :1438'
Linux: UDP 1438
sudo ss -ulnp 'sport = :1438'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1438
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1438 '
Windows (Command Prompt)
netstat -ano | findstr :1438
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1438 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1438
From Windows
Test-NetConnection HOST -Port 1438
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1438

Block port 1438 in the firewall

ufw
sudo ufw deny 1438/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1438 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1438 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1438' -Direction Inbound -Protocol TCP -LocalPort 1438 -Action Block
ufw
sudo ufw deny 1438/udp
iptables
sudo iptables -A INPUT -p udp --dport 1438 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1438 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1438' -Direction Inbound -Protocol UDP -LocalPort 1438 -Action Block

Related ports

1436saism1437tabula1439eicon-x251440eicon-slp

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