Secure Your Network for Free - Eric Seagren - Google Books

https://books.google.de/books?id=k7pFQjkhvAwC&pg=PA351&dq=%22angry+ip+scanner%22&hl=de&sa=X&ved=0CDEQ6AEwAmoVChMI9PiOjMmzxwIVybg

This is the only book to clearly demonstrate how to get big dollar security for your network using freely available tools. This is a must have book for any company or person with a limited budget.Network security is in a constant struggle for budget to get…