"I dont think it is something unique i have developed and i m sure people must have used in the past"

You're right, anyone can google search this topic and find code to do it, even from this site.

"I have got a lot of experience in Network Admin/Security Admin"

Let's hope you asked permission before taking the "entire department" down. Why do you want someone to check this? Since you know it works (in the sense it does what you wanted it to do), what advice are you looking for? Help to make your code take down a network faster?