Network Security Tools

Numbers

NASL allows variables to hold integer values—for example, the number 11. It is also possible to assign numeric values to variables using a hexadecimal representation. You write hexadecimal numbers in NASL using a leading “0x” prefix. For example, the hexadecimal number 0x1b holds the value 27 when represented as an integer in base-10 notation. Type the following script into a file:

h=0x1b;
display ("The value of h is ",h,"\n");

Now run it using the NASL interpreter to see the output:

[notroot]$ nasl hex.nasl
The value of h is 27

It is also possible to input numerical values in octal notation form, which uses base- 8 notation by placing a leading “0” prefix. For example, the x and y are equivalent in the following example:

x=014; #octal
y=12; #decimal