Ping a Specific Port

You can't ping ports, as Ping is using ICMP which doesn't have the concept of ports. Ports belong to the transport layer protocols like TCP and UDP. However, you could use nmap to see whether ports are open or not

nmap -p 80 example.com

Edit: As flokra mentioned, nmap is more than just a ping-for-ports-thingy. It's the security auditers and hackers best friend and comes with tons of cool options. Check the doc for all possible flags.

3 years ago

Open a telnet session to the specific port, for example:

# telnet google.com 80

Trying 74.125.226.48...

Connected to google.com.

Escape character is '^]'.

To close your session, hit Ctrl+].

3 years ago