Specifications
Copyright © 2015. Tenable Network Security, Inc. All rights reserved. Tenable Network Security and Nessus are registered trademarks of Tenable Network Security, Inc. 
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where Nessus is installed, and Nessus must be on an IPv6 capable network (Nessus cannot scan IPv6 resources over 
IPv4, but it can enumerate IPv6 interfaces via credentialed scans over IPv4). Both full and compressed IPv6 notation is 
supported when initiating scans. 
Scanning IPv6 Global Unicast IP address ranges is not supported unless the IPs are entered separately (i.e., 
list format). Nessus does not support ranges expressed as hyphenated ranges or CIDR addresses. Nessus 
does support Link-local ranges with the “link6” directive as the scan target or local link with “%eth0”. 
Evaluation to Licensed Upgrade 
If you install Nessus with an evaluation license, it is strongly recommended that you uninstall it before migrating to a fully 
licensed copy. Any policies or scan results you created can be exported and re-imported into the new installation. 
Unix/Linux 
Upgrading 
This section explains how to upgrade Nessus from a previous Nessus installation. 
Download the latest version of Nessus from the Nessus download page or through the Tenable Support Portal. Confirm 
the integrity of the installation package by comparing the download MD5 checksum with the one listed in the product 
release notes. 
Unless otherwise noted, all commands must be performed as the system’s root user. Regular user accounts 
typically do not have the privileges required to install this software. 
The following table provides upgrade instructions for the Nessus server on all previously supported platforms. Configuration 
settings and users that were created previously will remain intact. 
Make sure any running scans have finished before stopping nessusd. 
Any special upgrade instructions are provided in a note following the example. Nessus can be installed with several 
package managers including rpm and yum. Syntax for installation using rpm is shown below. These commands can be 
replaced by your package manager of choice in most cases. For example, administrators that prefer to use yum would use 
the following syntax: 
# yum -y localinstall [pkg] 
Platform 
Upgrade Instructions 
Red Hat ES 5, CentOS 5, and Oracle Linux 5; Red Hat ES 6, CentOS 6, and Oracle Linux 6; Red Hat ES 7, 
CentOS 7, and Oracle Linux 7 (64 bit) 
Upgrade Commands 
# service nessusd stop 
Use one of the appropriate commands below that corresponds to the version of Red 
Hat you are running: 
# rpm -Uvh Nessus-6.1.0-es5.x86_64.rpm 
# rpm -Uvh Nessus-6.1.0-es6.x86_64.rpm 










