how to monitor ports


 
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Operating Systems Solaris how to monitor ports
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Old 06-11-2007
how to monitor ports

I run into this issue occasionally and just looking for suggestions on how others solved it. I would like to monitor ports on a large number of systems and would like to determine which systems are listening on specific ports. I know there are heavy-weight apps that provide this such as HP ovo but I am looking for some light-weight open source options. I believe a syn scan will be sufficient for my purpose but I have not used any tools previously or not sure if their is a way to use default system tools or commands for this. Also for the those that have used syn scanning, does anyone run into issues due to simulating a syn attack in any of your networks?

Before you relpy, please do not recommend ping as it does not provide the functionality that I am looking for. Also, telnet will not provide this functionality because I do not what to have to script any break out or termination sequences for various connections (ie sendmail - port 25).
 
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asadmin-jms-ping(1AS)						   User Commands					     asadmin-jms-ping(1AS)

NAME
jms-ping - checks to see if the JMS provider is up and running SYNOPSIS
jms-ping --user admin_user [--password admin_password] [--host localhost] [--port 4848] [--passwordfile filename] [--secure|-s] [--terse=false] [--echo=false] [--interactive=false] Checks to see if the JMS provider is up and running. This command is supported in remote mode only. OPTIONS
--user authorized domain application server administrative username. --password password to administer the domain application server. --host machine name where the domain application server is running. --port port number of the domain application server listening for administration requests. --passwordfile file containing the domain application server password. --secure if true, uses SSL/TLS to communicate with the domain application server. --terse indicates that any output data must be very concise, typically avoiding human-friendly sentences and favoring well- formatted data for consumption by a script. Default is false. --echo setting to true will echo the command line statement on the standard output. Default is false. --interactive if set to true (default), only the required password options are prompted. Example 1: Using jms-ping asadmin> jms-ping --user admin --password adminadmin --host bluestar --port 4848 server1 JMS Ping Status=RUNNING EXIT STATUS
0 command executed successfully 1 error in executing the command asadmin-create-jmsdest(1AS), asadmin-delete-jmsdest(1AS), asadmin-list-jmsdest(1AS) J2EE 1.4 SDK March 2004 asadmin-jms-ping(1AS)