You can use nmap tool for this job. It is flexible in specifying targets. User can scan entire network or selected host or single server. Nmap is also useful to test your firewall rules. namp is metwork exploration tool and security / port scanner.
1. Run the following commands to get open port information
# nmap -v -sT YOURPCIP/24
# nmap -v -O YOURPCIP/24
2. Copy and paste the information reeived from the command to your forum post