According to the material, does stopping DoS attacks typically require assistance from ISPs and upstream providers?

• A. False
• B. They require assistance from ISPs to a significant degree.
• C. Depends on the attack size.
• D. True

Answer: (A)

The main idea here is that many DoS attacks can be mitigated without needing help from your Internet service provider or upstream networks. You can deploy defenses at the edge of your own network or rely on external protection services that sit in front of your infrastructure. Techniques like rate limiting, access control lists, blackholing, and geo-blocking on your routers and firewalls can drop a lot of malicious traffic before it consumes your bandwidth. If you opt for a cloud-based DDoS protection service or a scrubbing center, traffic is filtered before it reaches your network, again reducing or eliminating the need to involve your ISP. Only in the most extreme, persistent floods that exhaust your transit capacity would cooperation with an ISP or upstream provider become more relevant. So, the material suggests that stopping DoS attacks typically doesn’t require assistance from ISPs and upstream providers, which is why the statement is marked as false.