HTTPfy

Port 2338 (norton-lambert)

IANA assigns port 2338 to norton-lambert: Norton Lambert.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
norton-lambert TCP Norton Lambert Richard de Mornay -
norton-lambert UDP Norton Lambert Richard de Mornay -

Check what is listening on port 2338

Linux: is anything listening on TCP 2338?
sudo ss -tlnp 'sport = :2338'
Linux: UDP 2338
sudo ss -ulnp 'sport = :2338'
Linux / macOS: which process owns the port
sudo lsof -nP -i :2338
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':2338 '
Windows (Command Prompt)
netstat -ano | findstr :2338
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2338 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 2338
From Windows
Test-NetConnection HOST -Port 2338
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 2338

Block port 2338 in the firewall

ufw
sudo ufw deny 2338/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 2338 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 2338 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 2338' -Direction Inbound -Protocol TCP -LocalPort 2338 -Action Block
ufw
sudo ufw deny 2338/udp
iptables
sudo iptables -A INPUT -p udp --dport 2338 -j DROP
nftables
sudo nft add rule inet filter input udp dport 2338 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 2338' -Direction Inbound -Protocol UDP -LocalPort 2338 -Action Block

Related ports

2336appleugcontrol2337ideesrv23393com-webview2340wrs-registry, wrs_registry

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