Tuesday, 3 April 2012

How to look for TCP ports that are open on another linux machine

I want to connect to db2 database running on another linux machine B.
Before that, I need to check whether my linux machine A is able  to see the available ports on the machine B.
This can be done by using the command:

nmap  <ip adress of machine A>

example :

[root@RHEL6 ~]# nmap

Starting Nmap 5.21 ( http://nmap.org ) at 2012-04-03 18:11 IST
Nmap scan report for
Host is up (0.0013s latency).
Not shown: 997 filtered ports
22/tcp    open   ssh
80/tcp    closed http
50000/tcp open   iiimsf
MAC Address: 00:0C:29:70:E8:3F (VMware)

Nmap done: 1 IP address (1 host up) scanned in 24.65 seconds

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