Hello
DDoS Attack on Steemit.com. It again down.
If you have large number of connections from multiple IPs and if your server is finding it hard to manage all these connection and if your servers load has increased then it can be called as a DDOS attack.
There is not complete solution for DDOS attack. Software solutions (APF,CSF etc) can only provide you with 50 to 60% protection while Hardware firewall can give some better results.
Just search for DDOS in Google and you will get lot of information about it. Go through it.
You can still use other options to browse steemit like chainBB, Busy or esteem.