How can I test if the port by server machine is reachable or not?

thomas2004ch · 12-08-2009, 02:51 AM

I have two machines, one used as client and the other as server. I want to check if the port 7080 on server reachable from the client machine.

How can I do that? Using telnet?

linuxlover.chaitanya · 12-08-2009, 02:54 AM

You can first try and ping the server from client to confirm the network availability. And to test if the server is accepting connections you can just telnet to server on specific port like

telnet <server ip> <port>

In your case

telnet <server ip> 7080

thomas2004ch · 12-08-2009, 03:04 AM

I fid the answer now.

thomas2004ch · 12-08-2009, 03:05 AM

Quote:

Originally Posted by linuxlover.chaitanya

You can first try and ping the server from client to confirm the network availability. And to test if the server is accepting connections you can just telnet to server on specific port like

telnet <server ip> <port>

In your case

telnet <server ip> 7080

Many thanks.

thomas2004ch · 12-08-2009, 03:20 AM

Quote:

Originally Posted by linuxlover.chaitanya

You can first try and ping the server from client to confirm the network availability. And to test if the server is accepting connections you can just telnet to server on specific port like

telnet <server ip> <port>

In your case

telnet <server ip> 7080

How can I exit the telnet session and come back to the bash-prompt?

Lee_Ball · 12-08-2009, 04:14 AM

Quote:

Originally Posted by thomas2004ch

How can I exit the telnet session and come back to the bash-prompt?

Code:

Escape character is '^]'.

CTRL+]

If you're at a telnet> screen just type quit.

jefro · 12-08-2009, 04:07 PM

at the telnet prompt type help.

thomas2004ch · 12-09-2009, 01:17 AM

After the server connected I got followings.

Code:

[vger1@s001ap26-acct ~]$ telnet 130.144.163.128 7080
Trying 130.144.163.128...
Connected to 130.144.163.128 (130.144.163.128).
Escape character is '^]'.

I try Ctrl + ] and quit but it doesn't work.

linuxlover.chaitanya · 12-09-2009, 11:30 PM

Once at telnet prompt, type quit and then press enter key

chrism01 · 12-10-2009, 01:03 AM

I usually find Ctrl-C works ...

Lee_Ball · 12-10-2009, 06:30 AM

Quote:

Originally Posted by chrism01

I usually find Ctrl-C works ...

Not really. You have to press Ctrl+C then press enter to crash the session.

linuxlover.chaitanya · 12-10-2009, 06:33 AM

For me neither are working. I need to end the session be typing quit.

Lee_Ball · 12-10-2009, 06:34 AM

Quote:

Originally Posted by thomas2004ch

After the server connected I got followings.

Code:

[vger1@s001ap26-acct ~]$ telnet 130.144.163.128 7080
Trying 130.144.163.128...
Connected to 130.144.163.128 (130.144.163.128).
Escape character is '^]'.

I try Ctrl + ] and quit but it doesn't work.

The whole step would be:

Press and hold CTRL
Press ] then release all keys
Press Enter

That should take you back to telnet>

Type quit
Press Enter