HTTPfy

Port 1057 (startron)

IANA assigns port 1057 to startron: STARTRON.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
startron TCP STARTRON Markus Sabadello -
startron UDP STARTRON Markus Sabadello -

Check what is listening on port 1057

Linux: is anything listening on TCP 1057?
sudo ss -tlnp 'sport = :1057'
Linux: UDP 1057
sudo ss -ulnp 'sport = :1057'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1057
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1057 '
Windows (Command Prompt)
netstat -ano | findstr :1057
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1057 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1057
From Windows
Test-NetConnection HOST -Port 1057
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1057

Block port 1057 in the firewall

ufw
sudo ufw deny 1057/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1057 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1057 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1057' -Direction Inbound -Protocol TCP -LocalPort 1057 -Action Block
ufw
sudo ufw deny 1057/udp
iptables
sudo iptables -A INPUT -p udp --dport 1057 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1057 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1057' -Direction Inbound -Protocol UDP -LocalPort 1057 -Action Block

Related ports

1055ansyslmd1056vfo1058nim1059nimreg

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