Nessus uses Secure Shell (SSH) for credentialed scans on Cisco devices.
What protocols does Nessus use?
Nessus leverages the ability to log into remote Linux hosts via Secure Shell (SSH); and with Windows hosts, Nessus leverages a variety of Microsoft authentication technologies. Note that Nessus also uses the Simple Network Management Protocol (SNMP) to make version and information queries to routers and switches.
Can Nessus scan Cisco switch?
When running a credential scan on Cisco devices, Nessus authenticated successfully, but still shows plugin 21745 – Authentication Failure – Local Checks Not Run. The scan results may show the following plugins: 110095 – Target Credential Issues by Authentication Protocol – No Issues Found.
What is a Nessus credentialed scan?
By using secured credentials, the Nessus scanner can be granted local access to scan the target system without requiring an agent. … This can facilitate scanning of a very large network to determine local exposures or compliance violations.
What is Nessus compliance?
You can use Nessus to perform vulnerability scans and compliance audits to obtain all of this data at one time. … If you know how a server is configured, how it is patched, and what vulnerabilities are present, you can determine measures to mitigate risk.
Can Nessus scan public IP?
Use a Nessus Scanner that is able to communicate to the target public IP address. The Scan- ner can be cloud-based or internal.
What port is 3001?
Side note: UDP port 3001 uses the Datagram Protocol, a communications protocol for the Internet network layer, transport layer, and session layer. This protocol when used over PORT 3001 makes possible the transmission of a datagram message from one computer to an application running in another computer.
What ports does Nessus scan by default?
Most Nessus clients have a default scan policy setting of “default”. This causes the Nessus port scanner used to scan all TCP ports in the /etc/services file. Users can enter in more specific ranges and ports such as “21-80“, “21,22,25,80” or “21-143,1000-2000,60000-60005”.
How long does Nessus scan take?
In summary there are 1700 targets to scan. And the scan should be done in less than 50 hours (weekend). Just for a little pre check i scanned 12 targets and the scan took 4 hours. This is way to long for our szenario.
What is the difference between authenticated scan and unauthenticated scan?
An authenticated scan reports weaknesses exposed to the authenticated users of the system, as all the hosted services can be accessed with a right set of credentials. An unauthenticated scan reports weaknesses from a public viewpoint (this is what the system looks like to the unauthenticated users) of the system. …