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Port 7631 (tesla-sys-msg)

IANA assigns port 7631 to tesla-sys-msg: TESLA System Messaging.

Registered (user) port, 1024-49151 TCP

IANA assignment

Service nameProtoDescriptionAssigneeReference
tesla-sys-msg TCP TESLA System Messaging Andy Perreault -

Registry dates for this port: registered 2010-03-31.

Check what is listening on port 7631

Linux: is anything listening on TCP 7631?
sudo ss -tlnp 'sport = :7631'
Linux / macOS: which process owns the port
sudo lsof -nP -i :7631
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':7631 '
Windows (Command Prompt)
netstat -ano | findstr :7631
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 7631 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 7631
From Windows
Test-NetConnection HOST -Port 7631

Block port 7631 in the firewall

ufw
sudo ufw deny 7631/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 7631 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 7631 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 7631' -Direction Inbound -Protocol TCP -LocalPort 7631 -Action Block

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Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.