[NSE] firewalk.nse updated

[Henri Doreau <henri.doreau () gmail com>]

Hello,

I've been working on adding UDP support to my initial firewalk.nse
script. The path-mtu.nse script was a nice reference to achieve this.
I've also rewritten function "definitions" to use the : "local
function something(arg)" syntax instead of "local something =
function(arg)". I find the former more readable. I can see both used
in nmap scripts, so I assume there is no (or no big) difference
between them.

The script doesn't have an option to specify ports to scan yet.
Currently, it selects every tcp-filtered and udp-open|filtered port.

Please find attached this new version for review.

Regards.

-- 
Henri Doreau

Attachment: firewalk.nse
Description:

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