What are Security threats mitigated by an upstream ISP?

[carollavender]

I have seen the internet seen full of this question but didn't find any appropriate answer. But the most common hints were DoS attacks. If so when we hire an Internet service provider company what are the necessary security measures we need to ensure. There are few other things like Lost productivity, Firewall configuration error, Unauthorized remote access all these factors also affect the working. If so which one should be secured first. According to Experts ensuring logical security is more important than physical.

 

[mariumoxygenbd]

first you should subnetting your web site and reduce broadcast