besteban1989 · November 2, 2021 15:38
diff --git a/connectivity-testing.sh b/connectivity-testing.sh
 # method 1: if icmp is enabled in the target server then 
 ping $DESTINATION_IP

 # method 2: run telnet on a port where a service is listening. The target port must be binded (a service listening) so the test can be performed. 
 telnet $DESTINATION_IP $PORT

 # method 3 in case there is no service listening you can ask the target server owner/operator to install netcat. 
 ## A. In the destination server run netcat with -l <port>. Netcat will bind to the specified port in order to listen. This is handy when there is no services running but want to ensure connectivity exists. 
 netcat -l $PORTNUMBER
 ## B. In the source server you can run telnet or netcat in order to test the connectivity to the destination server: 
 telnet $DESTINATION_IP $PORT 
 # or 
 netcat -vz $DESTINATION_IP $PORT
	# method 1: if icmp is enabled in the target server then
	ping $DESTINATION_IP

	# method 2: run telnet on a port where a service is listening. The target port must be binded (a service listening) so the test can be performed.
	telnet $DESTINATION_IP $PORT

	# method 3 in case there is no service listening you can ask the target server owner/operator to install netcat.
	## A. In the destination server run netcat with -l <port>. Netcat will bind to the specified port in order to listen. This is handy when there is no services running but want to ensure connectivity exists.
	netcat -l $PORTNUMBER
	## B. In the source server you can run telnet or netcat in order to test the connectivity to the destination server:
	telnet $DESTINATION_IP $PORT
	# or
	netcat -vz $DESTINATION_IP $PORT