<div>
If you need more info, give feedback. A &quot;good&quot; rating means the answer was not satisfactory.
</div>


If you need more info, give feedback. A "good" rating means the answer was not satisfactory.

<div>
<div class="content wysiwyg-content">
In our networking environment, we need to allow a few tailor make applications as well as several others Applications Utilities such as backup, database, security/anti-virus software etc. &nbsp;All those applications located in different Zones in our networking environment separated by Firewalls. <br />
<br />
We need to do a Security Auditing exercise very soon and can only open the &nbsp;necessary ports that those application required. As some application requires many ports to be opened in order to be operational and some don't even have full documentation what TCP/UDP ports required. <br />
<br />
My questions is what is the most efficient way to find out what is the required/necessary ports required to be opened on the firewall that separate each zones. I know I could use NETSTAT for each applications but is that a more efficient or systematic way to achieve this task.<br />
<br />
Thank you so much for your kind advice in advance.<br />
<br />
Patrick
</div>
</div>


In our networking environment, we need to allow a few tailor make applications as well as several others Applications Utilities such as backup, database, security/anti-virus software etc.  All those applications located in different Zones in our networking environment separated by Firewalls. 

We need to do a Security Auditing exercise very soon and can only open the  necessary ports that those application required. As some application requires many ports to be opened in order to be operational and some don't even have full documentation what TCP/UDP ports required. 

My questions is what is the most efficient way to find out what is the required/necessary ports required to be opened on the firewall that separate each zones. I know I could use NETSTAT for each applications but is that a more efficient or systematic way to achieve this task.

Thank you so much for your kind advice in advance.

Patrick

Necessary Firewall Rules / Ports Required

Software firewalls, also known as host-based firewalls, provide a layer of software on one host that controls network traffic in and out of that single machine. Most operating systems now include firewall software, but many available software firewalls include central distribution, antivirus systems and disaster recovery.

Software Firewalls

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.

Hardware Firewalls

Network security consists of the policies adopted to prevent and monitor authorized access, misuse, modification, or denial of a computer network and network-accessible resources. Network security involves the authorization of access to data in a network, and covers a variety of computer networks; conducting transactions and communications among businesses, government agencies and individuals. Networks can be private, such as within a company, and others which might be open to public access.