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Port 5453 (surebox)

IANA assigns port 5453 to surebox: SureBox.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
surebox TCP SureBox Emin BORU -
surebox UDP SureBox Emin BORU -

Registry dates for this port: registered 2004-11.

Check what is listening on port 5453

Linux: is anything listening on TCP 5453?
sudo ss -tlnp 'sport = :5453'
Linux: UDP 5453
sudo ss -ulnp 'sport = :5453'
Linux / macOS: which process owns the port
sudo lsof -nP -i :5453
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':5453 '
Windows (Command Prompt)
netstat -ano | findstr :5453
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 5453 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 5453
From Windows
Test-NetConnection HOST -Port 5453
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 5453

Block port 5453 in the firewall

ufw
sudo ufw deny 5453/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 5453 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 5453 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 5453' -Direction Inbound -Protocol TCP -LocalPort 5453 -Action Block
ufw
sudo ufw deny 5453/udp
iptables
sudo iptables -A INPUT -p udp --dport 5453 -j DROP
nftables
sudo nft add rule inet filter input udp dport 5453 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 5453' -Direction Inbound -Protocol UDP -LocalPort 5453 -Action Block

Related ports

5445smbdirect5450tiepie, tiepie-disc5454apc-54545455apc-5455

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