• Our team is looking to connect with folks who use email services provided by Plesk, or a premium service. If you'd like to be part of the discovery process and share your experiences, we invite you to complete this short screening survey. If your responses match the persona we are looking for, you'll receive a link to schedule a call at your convenience. We look forward to hearing from you!
  • We are looking for U.S.-based freelancer or agency working with SEO or WordPress for a quick 30-min interviews to gather feedback on XOVI, a successful German SEO tool we’re looking to launch in the U.S.
    If you qualify and participate, you’ll receive a $30 Amazon gift card as a thank-you. Please apply here. Thanks for helping shape a better SEO product for agencies!
  • The BIND DNS server has already been deprecated and removed from Plesk for Windows.
    If a Plesk for Windows server is still using BIND, the upgrade to Plesk Obsidian 18.0.70 will be unavailable until the administrator switches the DNS server to Microsoft DNS. We strongly recommend transitioning to Microsoft DNS within the next 6 weeks, before the Plesk 18.0.70 release.
  • The Horde component is removed from Plesk Installer. We recommend switching to another webmail software supported in Plesk.

Issue DDOS attack

Bogdan1

Regular Pleskian
Hi,
I have VPS provided by OVH.
Today my sites went down and cloudflare started to show 522 error.
I followed steps from here How to diagnose DDoS attack on a Plesk server and the results are more than 400 connections, by multiple ip addresses(not more than a 200). So I bought (D)DoS Deflate Interface and blocked all countries except 1.
But this didn't help, so waste of money. It blocked 120 pages of ip addresses, sites are still down and it still shows hundreds of connections by hundreds of ip addresses.

Any ideas what to do? I thought DDOS won't be a thing for me with OVH and its Anti-DDOS thing would ...

PS: Plesk Admin works as normal but all hosted stiles are down ...

Code:
[root@vps520565 ~]# ss -tan state established | grep ":80\|:443" | awk '{print $4}'| cut -d':' -f1 | sort -n | uniq -c | sort -nr
     21 [2604
     13 [2001
     12 174.75.238.93
      8 [2a01
      7 96.44.183.149
      6 70.166.38.80
      6 216.144.228.130
      6 195.154.67.61
      5 195.4.164.127
      5 174.75.238.76
      5 174.70.241.8
      5 128.199.188.57
      5 118.70.144.77
      4 98.143.145.29
      4 72.210.252.134
      4 69.61.200.104
      4 66.135.227.178
      4 [2400
      4 216.144.230.233
      4 184.178.172.18
      4 174.76.48.249
      4 174.70.241.27
      4 173.245.239.223
      4 157.230.43.78
      3 98.143.145.30
      3 70.166.38.71
      3 66.110.216.221
      3 66.110.216.105
      3 45.248.43.35
      3 222.89.32.161
      3 208.102.51.6
      3 188.168.96.34
      3 185.132.126.163
      3 174.76.35.15
      3 174.75.238.82
      3 174.70.241.7
      3 174.70.241.18
      3 173.245.239.12
      3 158.58.131.27
      3 14.98.207.66
      3 144.91.116.171
      3 1.20.101.221
      3 111.230.138.177
      2 98.181.99.197
      2 98.162.25.29
      2 95.38.214.130
      2 94.139.235.172
      2 91.203.224.177
      2 87.121.0.199
      2 84.54.132.73
      2 82.200.233.4
      2 78.189.64.42
      2 77.92.53.7
      2 72.210.252.152
      2 72.11.148.222
      2 62.182.109.206
      2 58.145.170.42
      2 5.58.7.92
      2 51.158.108.135
      2 37.224.88.9
      2 36.67.116.165
      2 [2a03
      2 27.111.42.145
      2 220.130.167.59
      2 208.97.31.229
      2 203.114.108.46
      2 202.62.9.187
      2 202.51.120.22
      2 200.69.74.170
      2 200.60.97.194
      2 198.11.179.15
      2 192.141.232.12
      2 190.93.156.107
      2 190.54.100.74
      2 184.178.172.25
      2 184.176.166.8
      2 183.88.252.56
      2 183.60.189.178
      2 181.198.97.241
      2 180.200.238.130
      2 177.38.160.42
      2 177.23.184.166
      2 176.31.51.77
      2 175.139.190.165
      2 174.76.48.251
      2 174.76.48.232
      2 174.76.48.230
      2 174.76.35.29
      2 174.75.238.87
      2 173.245.239.177
      2 170.246.85.106
      2 163.172.136.226
      2 125.162.141.70
      2 1.20.169.174
      2 119.15.82.222
      2 118.174.220.32
      2 114.4.102.78
      2 113.53.83.210
      2 111.118.128.123
      2 109.188.69.113
      2 104.168.236.186
      1 96.9.72.242
      1 95.77.103.171
      1 95.68.30.207
      1 95.66.142.18
      1 95.65.89.96
      1 95.179.248.188
      1 95.140.27.135
      1 95.137.240.3
      1 95.105.89.221
      1 94.244.28.246
      1 94.231.182.117
      1 94.180.106.94
      1 94.158.152.248
      1 94.102.52.29
      1 93.87.75.118
      1 93.184.8.122
      1 93.115.138.250
      1 92.255.248.230
      1 92.255.196.91
      1 92.244.150.94
      1 92.242.254.84
      1 91.98.28.188
      1 91.83.227.147
      1 91.247.250.215
      1 91.246.213.100
      1 91.217.96.130
      1 91.207.147.243
      1 91.195.130.237
      1 89.40.59.174
      1 89.237.29.198
      1 89.233.183.64
      1 89.216.49.25
      1 88.255.63.226
      1 88.247.165.215
      1 88.12.49.249
      1 88.118.131.30
      1 87.254.138.170
      1 86.28.76.188
      1 85.99.227.200
      1 85.217.192.39
      1 85.206.57.202
      1 85.187.245.115
      1 85.185.81.26
      1 84.47.111.110
      1 82.147.93.63
      1 82.147.120.32
      1 82.137.244.74
      1 82.117.213.30
      1 82.114.90.90
      1 82.114.82.90
      1 81.92.249.138
      1 81.39.23.164
      1 81.183.209.197
      1 80.92.181.3
      1 80.169.143.166
      1 79.154.126.152
      1 79.104.197.58
      1 78.186.109.7
      1 78.139.200.51
      1 77.94.123.27
      1 77.89.251.138
      1 77.37.208.119
      1 77.252.26.71
      1 77.247.88.10
      1 77.247.250.73
      1 70.61.166.78
      1 70.169.132.131
      1 70.169.129.246
      1 67.22.223.9
      1 67.207.168.102
      1 62.32.80.98
      1 60.12.214.184
      1 59.152.104.58
      1 58.40.124.174
      1 58.220.95.116
      1 51.75.83.94
      1 51.38.71.101
      1 51.158.186.242
      1 51.158.165.18
      1 51.158.114.177
      1 50.205.151.218
      1 49.48.32.27
      1 49.156.42.210
      1 46.48.183.133
      1 46.35.184.187
      1 46.238.48.82
      1 46.225.240.122
      1 46.149.86.51
      1 45.71.80.2
      1 45.71.184.132
      1 45.70.204.254
      1 45.70.0.17
      1 45.64.122.210
      1 45.5.94.34
      1 45.4.57.94
      1 45.230.64.1
      1 45.169.98.135
      1 45.165.152.26
      1 45.115.112.252
      1 45.112.57.230
      1 43.224.8.14
      1 43.224.8.12
      1 41.217.217.60
      1 41.169.162.194
      1 40.85.189.146
      1 37.235.203.91
      1 37.112.151.11
      1 36.92.93.61
      1 36.89.89.7
      1 36.89.233.133
      1 36.89.181.155
      1 36.89.180.103
      1 36.84.59.53
      1 36.81.6.7
      1 36.73.158.84
      1 36.66.235.147
      1 36.66.206.74
      1 36.66.124.157
      1 36.65.52.26
      1 31.192.148.55
      1 31.182.12.3
      1 31.179.224.42
      1 31.173.0.249
      1 [2a00
      1 27.147.155.70
      1 27.147.136.178
      1 27.145.227.202
      1 24.113.42.169
      1 223.204.69.226
      1 223.100.166.3
      1 222.93.250.67
      1 221.7.223.18
      1 219.135.155.69
      1 218.90.171.214
      1 218.202.80.222
      1 217.219.61.6
      1 217.19.209.253
      1 2.144.246.255
      1 213.96.2.61
      1 213.6.141.114
      1 213.222.180.141
      1 213.180.39.170
      1 213.129.99.10
      1 213.108.18.34
      1 212.66.61.118
      1 210.61.216.66
      1 210.245.51.15
      1 207.180.236.225
      1 207.154.225.226
      1 205.185.115.100
      1 203.77.239.18
      1 203.188.245.98
      1 203.153.28.3
      1 203.153.119.242
      1 202.69.38.82
      1 202.5.36.184
      1 202.43.183.210
      1 202.43.112.34
      1 202.40.190.81
      1 202.166.207.218
      1 202.160.161.206
      1 201.62.56.49
      1 201.46.248.157
      1 201.222.55.238
      1 201.219.213.194
      1 201.217.71.122
      1 201.184.135.155
      1 201.182.91.254
      1 201.159.95.94
      1 200.77.186.206
      1 200.73.129.61
      1 200.73.128.5
      1 200.71.72.223
      1 200.54.22.74
      1 200.54.194.13
      1 200.4.169.179
      1 200.37.150.18
      1 200.116.198.160
      1 199.19.254.74
      1 197.232.47.102
      1 197.221.89.67
      1 197.210.129.142
      1 197.159.3.35
      1 196.3.100.45
      1 196.27.106.112
      1 196.216.215.11
      1 195.9.25.42
      1 195.81.112.162
      1 195.53.237.122
      1 195.230.154.2
      1 195.191.214.118
      1 194.44.246.82
      1 193.85.228.178
      1 193.169.5.14
      1 193.106.192.149
      1 192.169.140.100
      1 191.7.209.186
      1 191.6.135.90
      1 191.5.177.63
      1 191.37.165.83
      1 191.241.226.173
      1 191.103.254.125
      1 190.93.208.82
      1 190.85.115.78
      1 190.6.200.158
      1 190.29.26.190
      1 190.214.30.146
      1 190.14.225.34
      1 190.131.232.42
      1 190.128.203.214
      1 190.121.146.241
      1 190.109.167.9
      1 190.104.237.148
      1 190.104.179.210
      1 189.91.84.25
      1 189.203.179.237
      1 189.10.97.147
      1 188.94.224.82
      1 188.43.52.166
      1 188.243.58.75
      1 188.166.104.152
      1 188.133.137.9
      1 187.4.112.242
      1 187.22.237.229
      1 187.188.190.217
      1 187.125.23.26
      1 187.103.230.40


      ...
 
Last edited:
So basically if someone is attacking 1 customer's websites, it downs all of the websites hosted on the server. How do you guys handle that?
 
Back
Top