Nessus Security Scanner protects the communication between the client and the server by using SSL.
To work securely, the OpenSSL library needs a suitable amount of random bytes.
On most system, it uses EGD or
On systems which have none of these, Nessus will provide OpenSSL with a file
full of random bytes generated by
nessus-mkrand which is stored by default under
nessus-mkcert-client require user input as a random seed.
nessus-mkrand produces a file stored under
$HOME/.rnd containing 1024 bytes of entropy.