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Port 7775 (inetfs)

IANA assigns port 7775 to inetfs: A File System using TLS over a wide area network.

Registered (user) port, 1024-49151 TCP

IANA assignment

Service nameProtoDescriptionAssigneeReference
inetfs TCP A File System using TLS over a wide area network Roger Allan -

Registry dates for this port: registered 2016-01-28.

Check what is listening on port 7775

Linux: is anything listening on TCP 7775?
sudo ss -tlnp 'sport = :7775'
Linux / macOS: which process owns the port
sudo lsof -nP -i :7775
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':7775 '
Windows (Command Prompt)
netstat -ano | findstr :7775
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 7775 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 7775
From Windows
Test-NetConnection HOST -Port 7775

Block port 7775 in the firewall

ufw
sudo ufw deny 7775/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 7775 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 7775 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 7775' -Direction Inbound -Protocol TCP -LocalPort 7775 -Action Block

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