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Full Discussion: Test Connection to hosts
Top Forums UNIX for Dummies Questions & Answers Test Connection to hosts Post 302711521 by SkySmart on Saturday 6th of October 2012 05:46:15 PM
Old 10-06-2012
Test Connection to hosts
i have about 3500 hosts/devices which i monitor.

i monitor them from one host. we'll call this one host HOSTA. HOSTA has connectivity to all 3500 hosts/devices.

now, i have to create a backup for HOSTA. and the back up is in another state.

how do i get a list of all open ports on HOSTA so I can have them replicated on HOSTB?

please keep in mind, i wont be the one making the actual change. i just need to have the information ready to give to the necessary personnel that will be setting it up.

so the options i have in mind are:

Code:
nmap OR
netcat (nc)

how can i use either of these two commands to get all open ports that HOSTA can connect to on all 3500 hosts/devices?

for example:

lets say one of the 3500 hosts/devices i monitor is called merchant-01.skysmart.net

i'm hoping there will be a command similar to this:

Code:
nmap HOSTA merchant-01.skysmart.net

what i'll be expecting the aforementioned command to do is get me a list of ALL OPEN ports that HOSTA can connect to on merchant-01.skysmart.net. when i say all, i mean all. udp, tcp, whichever.

any ideas?

os: Linux Red Hat/SunOS
 

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LEARN ABOUT DEBIAN

rplay.hosts

RPLAY.HOSTS(5)							File Formats Manual						    RPLAY.HOSTS(5)

NAME

       rplay.hosts - rplay host authentication database

SYNOPSIS

       /usr/local/etc/rplay.hosts

DESCRIPTION

       The  rplay.hosts  file contains a list of hosts and access permissions which rplayd uses to validate incoming connections.  Each line is of
       the form:

	      hostname[:permission]

       where

       hostname       is the name of a remote host or a host's IP address.  Wildcards can be used within IP addresses  to  match  multiple  hosts.
		      The wildcard character is "*".

       permission     is an optional field containing any combination of the following characters:

		      r  the host can read sounds.

		      w  the host can write sounds.

		      x  the host can play, stop, pause, and continue sounds.  This is normally called execute permission.

		      m  the host can monitor the audio stream written by rplayd to the audio device.

       "rx" permissions are used when no permissions are specified.

EXAMPLE

       #
       # All hosts have read access:
       #
       *:r

       #
       # Trusted hosts:
       #
       nice-guy.sdsu.edu:rwx
       friend.sdsu.edu:rwx
       amigo.sdsu.edu:rwx
       130.191.224.224:rwx

       #
       # Hosts which can read and execute:
       #
       foo.bar.com:rx
       130.190.*:rx
       146.244.234.*:rx
       using.default.perms.edu

       #
       # Hosts which can monitor the audio stream
       #
       nsa.sdsu.edu:m

FILES

       /usr/local/etc/rplay.hosts

SEE ALSO

       rplayd(1)

BUGS

       The permissions for an "*" entry apply to all matching hosts.  The order of this file does not matter.  Specific hosts can have access dis-
       abled with entries like:

       bad.guy.edu:

       however, any matching "*" entries will still apply.

								     12/21/97							    RPLAY.HOSTS(5)
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