I have a small company designing, programing, and maintaining websites. I host my websites on a shared hosting plan (cpanel). I received an email 2 days ago that there was a DOS attack and the provider changed the IP address as a result. I then had to change the nameserver IP and wait for the DNS propagation. This almost took 2 -working- days during which my clients had no access to their emails or website. Also, the downtime will affect the websites in the short-term (ranking, etc.). So, I could only sit and wait not being able to do anything while my clients were furiously calling me (I don't blame them).So my questions are:Is it the proper response for the hosting company to change the IP when a DOS attack occurs? I switched from a company that used to shut down the servers in similar occasions (!)What can I do to defend myself from this happening again. Although a small company, until now I had a stellar reputation. I don't want this to happen again. Moving to a dedicated server will not change anything if their policy is to change IP at a DOS attack. Another option I found is the failover DNS which requires mirroring all the sites to a second server (double cost) and I haven't read the best things about this practice. Are there other alternatives?
Avoiding downtime after DOS and change of IP
shared hosting;dns servers;botattack;downtime