What do you recommend for DDoS actions on ports?

Question

iptables

Hello, the server of my site started DDoSing like this (letter from the host FirstVDS).
Please tell me the possible steps to protect against such an attack.

Main traffic sources:
server-54-230-199-142.lhr50.r.cloudfront.net54.230.199.142 120.4M bytes per second with a packet size of 1368 bytes on port 55330.
dsl-85-173-212-184.vlz.ru85.173.212.184 23.7M bytes per second with a packet size of 1480 bytes on port 20480.
188.93.20.218 18.3M bytes per second with a packet size of 1443 bytes on port 59411.
95.213.4.229 14.7M bytes per second with a burst size of 920 bytes on port 40607.
V7657.vps.masterhost.ru87.242.115.116 14.2M bytes per second with a packet size of 1331 bytes on port 51518.
srv119-131-240-87.vk.com87.240.131.119 13.3M bytes per second with a packet size of 1277 bytes on port 37723.
95.213.3.49 7.8M bytes per second with a packet size of 653 bytes on port 37717.
95.213.6.227 7.5M bytes per second with a packet size of 628 bytes on port 53542.
95.213.4.234 5.5M bytes per second with a packet size of 1422 bytes on port 33315.
store.skaditel.ru195.191.238.200 5.3M bytes per second with a packet size of 1334 bytes on port 36781.
betta.klerk.ru193.227.241.50 5.2M bytes per second with a packet size of 1471 bytes on port 46710.
188.43.72.250 3.8M bytes per second with a packet size of 1449 bytes on port 50833.
188.43.72.240 3.4M bytes per second with a packet size of 1378 bytes on port 53036.
188.43.72.249 3.2M bytes per second with a packet size of 1463 bytes on port 45425.
mega109.z8.ru80.93.54.17 3.1M bytes per second with a packet size of 1255 bytes on port 44662.

Answer 1

Good afternoon. if the site is more or less serious, I recommend contacting the filterers. Or be hosted by a large hoster that can help with DDoS protection

Answer 2

fail2ban
sharm-blog.ru/ubuntu-ddos-protection-iptables.html