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Port 1338 (wmc-log-svc)

IANA assigns port 1338 to wmc-log-svc: WMC-log-svr.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
wmc-log-svc TCP WMC-log-svr Scott Anderson -
wmc-log-svc UDP WMC-log-svr Scott Anderson -

Check what is listening on port 1338

Linux: is anything listening on TCP 1338?
sudo ss -tlnp 'sport = :1338'
Linux: UDP 1338
sudo ss -ulnp 'sport = :1338'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1338
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1338 '
Windows (Command Prompt)
netstat -ano | findstr :1338
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1338 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1338
From Windows
Test-NetConnection HOST -Port 1338
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1338

Block port 1338 in the firewall

ufw
sudo ufw deny 1338/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1338 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1338 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1338' -Direction Inbound -Protocol TCP -LocalPort 1338 -Action Block
ufw
sudo ufw deny 1338/udp
iptables
sudo iptables -A INPUT -p udp --dport 1338 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1338 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1338' -Direction Inbound -Protocol UDP -LocalPort 1338 -Action Block

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Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.