security code for N600 wireless dual BAND ROUTER WNDR3400

[plemans]

There's a support site with access to manuals, firmware, install guides, etc.
Go to https://www.netgear.com/support/
Type in your model number and from there it'll take you to the above.
Its a great resource to start with.

[michaelkenward]

Not much to go on there.

Why do you want to know the security code?

Tell us what you are doing and what happens and you might get better answers.