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Port 1393 (iclpv-nls)

IANA assigns port 1393 to iclpv-nls: Network Log Server.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
iclpv-nls TCP Network Log Server - -
iclpv-nls UDP Network Log Server - -

Check what is listening on port 1393

Linux: is anything listening on TCP 1393?
sudo ss -tlnp 'sport = :1393'
Linux: UDP 1393
sudo ss -ulnp 'sport = :1393'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1393
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1393 '
Windows (Command Prompt)
netstat -ano | findstr :1393
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1393 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1393
From Windows
Test-NetConnection HOST -Port 1393
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1393

Block port 1393 in the firewall

ufw
sudo ufw deny 1393/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1393 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1393 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1393' -Direction Inbound -Protocol TCP -LocalPort 1393 -Action Block
ufw
sudo ufw deny 1393/udp
iptables
sudo iptables -A INPUT -p udp --dport 1393 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1393 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1393' -Direction Inbound -Protocol UDP -LocalPort 1393 -Action Block

Related ports

1391iclpv-sas1392iclpv-pm1394iclpv-nlc1395iclpv-wsm

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