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Port 6417 (faxcomservice)

IANA assigns port 6417 to faxcomservice: Faxcom Message Service.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
faxcomservice TCP Faxcom Message Service Albert Leung -
faxcomservice UDP Faxcom Message Service Albert Leung -

Registry dates for this port: registered 2006-04.

Check what is listening on port 6417

Linux: is anything listening on TCP 6417?
sudo ss -tlnp 'sport = :6417'
Linux: UDP 6417
sudo ss -ulnp 'sport = :6417'
Linux / macOS: which process owns the port
sudo lsof -nP -i :6417
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':6417 '
Windows (Command Prompt)
netstat -ano | findstr :6417
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 6417 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 6417
From Windows
Test-NetConnection HOST -Port 6417
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 6417

Block port 6417 in the firewall

ufw
sudo ufw deny 6417/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 6417 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 6417 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 6417' -Direction Inbound -Protocol TCP -LocalPort 6417 -Action Block
ufw
sudo ufw deny 6417/udp
iptables
sudo iptables -A INPUT -p udp --dport 6417 -j DROP
nftables
sudo nft add rule inet filter input udp dport 6417 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 6417' -Direction Inbound -Protocol UDP -LocalPort 6417 -Action Block

Related ports

6389clariion-evr016390metaedit-ws6418syserverremote6419svdrp, svdrp-disc

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