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Full Discussion: Testing connectivity to an URL
Top Forums UNIX for Advanced & Expert Users Testing connectivity to an URL Post 303045335 by hicksd8 on Tuesday 17th of March 2020 06:38:14 AM
Old 03-17-2020
I would like to try and answer your question but I'm completely confused. We need a lot more information to even start to think about it.

However, let me state a couple of facts here (to prompt you to tell us more).

1. Your laptop ip address is 192.168.8.149 and your server address is 192.168.121.72 so if your subnet mask is (typical) 255.255.255.0 then these two addresses are NOT on the same network and so your laptop will send the connection request to its configured gateway. (You could try changing your laptop ip address to 192.168.121.xxx to see if it connects then).

2. You specify a port number on a connection command line when you know that there is a listener on that port number at the other end for the network protocol/service that you are using. If you have a particular service listening on port 8081 then that port number is not also going to work for telnet protocol. By default (ie, without specifying a port number) telnet uses port 23. So you would not specify a different port number on a telnet command line unless you KNOW that a telnet listener is configured on port 8081 at the other end. Telnet will fail to connect otherwise.

If you know all this already then I apologize for not understanding your question but please provide much more information.

Q: Can you ping your target ip address? If that fails then fix that first.
 

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LEARN ABOUT DEBIAN

wakeonlan

WAKEONLAN(1)						User Contributed Perl Documentation					      WAKEONLAN(1)

NAME

       wakeonlan - Perl script to wake up computers

SYNOPSIS

       wakeonlan [-h] [-v] [-i IP_address] [-p port] [-f file] [[hardware_address] ...]

DESCRIPTION

       This script sends 'magic packets' to wake-on-lan enabled ethernet adapters and motherboards, in order to switch on the called PC. Be sure
       to connect the NIC with the motherboard if neccesary, and enable the WOL function in the BIOS.

       The 'magic packet' consists of 6 times 0xFF followed by 16 times the hardware address of the NIC. This sequence can be encapsulated in any
       kind of packet. This script uses UDP packets.

OPTIONS

       -h  Displays the help information.

       -v  Displays the script version.

       -i ip_address
	   Destination IP address. Unless you have static ARP tables you should use some kind of broadcast address (the broadcast address of the
	   network where the computer resides or the limited broadcast address). Default: 255.255.255.255 (the limited broadcast address).

       -p port
	   Destination port. Default: 9 (the discard port).

       -f file
	   File with hardware addresses of wakeable computers. For an example check the file lab001.wol in the examples subdirectory.

EXAMPLES

       Using the limited broadcast address (255.255.255.255):

	   $ wakeonlan 01:02:03:04:05:06
	   $ wakeonlan 01:02:03:04:05:06 01:02:03:04:05:07

       Using a subnet broadcast address:

	   $ wakeonlan -i 192.168.1.255 01:02:03:04:05:06

       Using another destination port:

	   $ wakeonlan -i 192.168.1.255 -p 1234 01:02:03:04:05:06

       Using a file as source of hardware and IP addresses:

	   $ wakeonlan -f examples/lab001.wol
	   $ wakeonlan -f examples/lab001.wol 01:02:03:04:05:06

AUTHOR

       Jose Pedro Oliveira <jpo@di.uminho.pt> maintaining and expanding original work done by Ico Doornekamp <ico@edd.dhs.org>.

COPYRIGHT

       Copyright (c) 2000-2005 Jose Pedro Oliveira.

       This is free software.  You may modify it and distribute it under Perl's Artistic Licence.  Modified versions must be clearly indicated.

SEE ALSO

       For more information regarding this script and Wakeonlan technology just check the following address
       http://gsd.di.uminho.pt/jpo/software/wakeonlan/.

perl v5.14.2							    2012-03-10							      WAKEONLAN(1)
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