HTTPfy

Port 4081 (lorica-in-sec)

IANA assigns port 4081 to lorica-in-sec: Lorica inside facing (SSL).

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
lorica-in-sec TCP Lorica inside facing (SSL) - -
lorica-in-sec UDP Lorica inside facing (SSL) - -

Check what is listening on port 4081

Linux: is anything listening on TCP 4081?
sudo ss -tlnp 'sport = :4081'
Linux: UDP 4081
sudo ss -ulnp 'sport = :4081'
Linux / macOS: which process owns the port
sudo lsof -nP -i :4081
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':4081 '
Windows (Command Prompt)
netstat -ano | findstr :4081
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 4081 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 4081
From Windows
Test-NetConnection HOST -Port 4081
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 4081

Block port 4081 in the firewall

ufw
sudo ufw deny 4081/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 4081 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 4081 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 4081' -Direction Inbound -Protocol TCP -LocalPort 4081 -Action Block
ufw
sudo ufw deny 4081/udp
iptables
sudo iptables -A INPUT -p udp --dport 4081 -j DROP
nftables
sudo nft add rule inet filter input udp dport 4081 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 4081' -Direction Inbound -Protocol UDP -LocalPort 4081 -Action Block

Related ports

4079santools4080lorica-in4082lorica-out4083lorica-out-sec

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