<div>
One can change the default port easily. &nbsp;once you decide the port and after your networking team opens the port, you can change the same in your listener.ora and start your listener.
</div>


One can change the default port easily.  once you decide the port and after your networking team opens the port, you can change the same in your listener.ora and start your listener.

<div>
so shall i do that later on after initial install and default configuration?<br />
<br />
what port do you nromally switch to? does it really provide extra security.
</div>


so shall i do that later on after initial install and default configuration?

what port do you nromally switch to? does it really provide extra security.

<div>
<div class="content wysiwyg-content">
we are migrating a 9i DB on AIX to 11g DB on (VMware/ RHEL)<br />
<br />
Currently we use 1521 for all database connections.<br />
<br />
Does it make any sense to change the default listener port to something else to make things more secure? Is not this security using obscurity.<br />
<br />
There will be a firewall installed too.<br />
<br />
would it involve a lot of work if we decide to change the port?
</div>
</div>


we are migrating a 9i DB on AIX to 11g DB on (VMware/ RHEL)

Currently we use 1521 for all database connections.

Does it make any sense to change the default listener port to something else to make things more secure? Is not this security using obscurity.

There will be a firewall installed too.

would it involve a lot of work if we decide to change the port?

Change_DefaultListenerPort

Oracle is an object-relational database management system. It supports a large number of languages and application development frameworks. Its primary languages are SQL, PL/SQL and Java, but it also includes support for C and C++. Oracle also has its own enterprise modules and application server software.

Oracle Database

The Linux operating system, in all its flavors, has its own share of security flaws that allow intrusions, but there are various mechanisms by which these flaws can be removed, generally divided into two parts: authentication and access control. Authentication is responsible for ensuring that a user requesting access to the system is really the user with the account, while access control is responsible for controlling which resources each account has access to and what kind of access is permitted.

Linux Security

Hardware-based firewalls provide more sophisticated protection for inbound and outbound traffic than the simple Windows software firewall or the basic NAT firewalls found in routers. These devices implement techniques such as stateful packet inspection, deep packet inspection, and content filtering; and may include built-in antivirus and anti-malware protection.