HTTPfy

Port 8448 (matrix-fed)

IANA assigns port 8448 to matrix-fed: Matrix Federation Protocol.

Registered (user) port, 1024-49151 TCP

IANA assignment

Service nameProtoDescriptionAssigneeReference
matrix-fed TCP Matrix Federation Protocol The Matrix.org Foundation C.I.C. -

Registry dates for this port: registered 2023-08-04.

Check what is listening on port 8448

Linux: is anything listening on TCP 8448?
sudo ss -tlnp 'sport = :8448'
Linux / macOS: which process owns the port
sudo lsof -nP -i :8448
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':8448 '
Windows (Command Prompt)
netstat -ano | findstr :8448
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 8448 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 8448
From Windows
Test-NetConnection HOST -Port 8448

Block port 8448 in the firewall

ufw
sudo ufw deny 8448/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 8448 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 8448 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 8448' -Direction Inbound -Protocol TCP -LocalPort 8448 -Action Block

Related ports

8444pcsync-http8445copy, copy-disc8450npmp8457nexentamv

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