HTTPfy

Port 3030 (arepa-cas)

IANA assigns port 3030 to arepa-cas: Arepa Cas.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
arepa-cas TCP Arepa Cas Stuart Schaefer -
arepa-cas UDP Arepa Cas Stuart Schaefer -

Check what is listening on port 3030

Linux: is anything listening on TCP 3030?
sudo ss -tlnp 'sport = :3030'
Linux: UDP 3030
sudo ss -ulnp 'sport = :3030'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3030
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3030 '
Windows (Command Prompt)
netstat -ano | findstr :3030
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3030 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3030
From Windows
Test-NetConnection HOST -Port 3030
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3030

Block port 3030 in the firewall

ufw
sudo ufw deny 3030/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3030 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3030 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3030' -Direction Inbound -Protocol TCP -LocalPort 3030 -Action Block
ufw
sudo ufw deny 3030/udp
iptables
sudo iptables -A INPUT -p udp --dport 3030 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3030 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3030' -Direction Inbound -Protocol UDP -LocalPort 3030 -Action Block

Related ports

3028LiebDevMgmt-DM, LiebDevMgmt_DM3029LiebDevMgmt-A, LiebDevMgmt_A3031eppc3032redwood-chat

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