Port 6673 (vision-elmd, vision_elmd)

IANA assigns port 6673 to vision-elmd, vision_elmd: vision_elmd IANA assigned this well-formed service name as a replacement for "vision_elmd"..

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference

vision-elmd TCP vision_elmd IANA assigned this well-formed service name as a replacement for "vision_elmd". Chris Kramer -

vision_elmd TCP vision_elmd
This entry is an alias to "vision-elmd". This entry is now historic, not usable for use with many common service discovery mechanisms. Chris Kramer -

vision-elmd UDP vision_elmd IANA assigned this well-formed service name as a replacement for "vision_elmd". Chris Kramer -

vision_elmd UDP vision_elmd
This entry is an alias to "vision-elmd". This entry is now historic, not usable for use with many common service discovery mechanisms. Chris Kramer -

Check what is listening on port 6673

Linux: is anything listening on TCP 6673?

sudo ss -tlnp 'sport = :6673'

Linux: UDP 6673

sudo ss -ulnp 'sport = :6673'

Linux / macOS: which process owns the port

sudo lsof -nP -i :6673

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':6673 '

Windows (Command Prompt)

netstat -ano | findstr :6673

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 6673 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine

nc -vz -w 5 HOST 6673

From Windows

Test-NetConnection HOST -Port 6673

UDP probe (no reply does not prove it is closed)

nc -vzu -w 5 HOST 6673

Block port 6673 in the firewall

ufw

sudo ufw deny 6673/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 6673 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 6673 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 6673' -Direction Inbound -Protocol TCP -LocalPort 6673 -Action Block

ufw

sudo ufw deny 6673/udp