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Port 4186 (boxbackupstore)

IANA assigns port 4186 to boxbackupstore: Box Backup Store Service.

Registered (user) port, 1024-49151 TCP

IANA assignment

Service nameProtoDescriptionAssigneeReference
boxbackupstore TCP Box Backup Store Service Chris Wilson -

Registry dates for this port: registered 2008-09-11.

Check what is listening on port 4186

Linux: is anything listening on TCP 4186?
sudo ss -tlnp 'sport = :4186'
Linux / macOS: which process owns the port
sudo lsof -nP -i :4186
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':4186 '
Windows (Command Prompt)
netstat -ano | findstr :4186
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 4186 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 4186
From Windows
Test-NetConnection HOST -Port 4186

Block port 4186 in the firewall

ufw
sudo ufw deny 4186/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 4186 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 4186 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 4186' -Direction Inbound -Protocol TCP -LocalPort 4186 -Action Block

Related ports

4184universe-suite, universe_suite4185wcpp4187csc-proxy, csc_proxy4188vatata

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