Port 2654 (corel-vncadmin, corel_vncadmin)

IANA assigns port 2654 to corel-vncadmin, corel_vncadmin: Corel VNC Admin IANA assigned this well-formed service name as a replacement for "corel_vncadmin"..

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference

corel-vncadmin TCP Corel VNC Admin IANA assigned this well-formed service name as a replacement for "corel_vncadmin". Oleg Noskov -

corel_vncadmin TCP Corel VNC Admin
This entry is an alias to "corel-vncadmin". This entry is now historic, not usable for use with many common service discovery mechanisms. Oleg Noskov -

corel-vncadmin UDP Corel VNC Admin IANA assigned this well-formed service name as a replacement for "corel_vncadmin". Oleg Noskov -

corel_vncadmin UDP Corel VNC Admin
This entry is an alias to "corel-vncadmin". This entry is now historic, not usable for use with many common service discovery mechanisms. Oleg Noskov -

Check what is listening on port 2654

Linux: is anything listening on TCP 2654?

sudo ss -tlnp 'sport = :2654'

Linux: UDP 2654

sudo ss -ulnp 'sport = :2654'

Linux / macOS: which process owns the port

sudo lsof -nP -i :2654

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':2654 '

Windows (Command Prompt)

netstat -ano | findstr :2654

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2654 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine

nc -vz -w 5 HOST 2654

From Windows

Test-NetConnection HOST -Port 2654

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

nc -vzu -w 5 HOST 2654

Block port 2654 in the firewall

ufw

sudo ufw deny 2654/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 2654 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 2654 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 2654' -Direction Inbound -Protocol TCP -LocalPort 2654 -Action Block

ufw

sudo ufw deny 2654/udp