Резкий всплеск прямых заходов. Как бороться?

Не подскажите как можно забанить этих ботов через файл .htaccess?

Через .htaccess только диапазон ip-адресов можно забанить. Списки ip надо собирать. Большой список получится.

Аналогично, до этого на нескольких сайтах почти не фиксировал ботов с прямыми заходами, а сегодня как с цепи сорвались.

Вот для .htaccess ip-шники (Hetzner, AMAZON , Biterika)

<Limit GET POST HEAD>
order allow,deny
deny from env=bad_bot
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deny from 45.84.176.0/23
deny from 45.86.0.0/23
deny from 45.87.252.0/23
deny from 45.89.16.0/22
deny from 45.90.196
deny from 45.134.180.0/22
deny from 45.134.252.0/23
deny from 45.135.32.0/23
deny from 45.139.125
deny from 45.139.176.0/23
deny from 45.140.52.0/22
deny from 45.142.252.0/23
deny from 45.144.36
deny from 45.145.116.0/22
deny from 45.147.192.0/23
deny from 45.151.145.0/24
deny from 46.8.10.0/23
deny from 46.8.14.0/23
deny from 46.8.16.0/23
deny from 46.8.22.0/23
deny from 46.8.56.0/23
deny from 46.8.106.0/23
deny from 46.8.110.0/23
deny from 46.8.154.0/23
deny from 46.8.156.0/23
deny from 46.8.192.0/23
deny from 46.8.212.0/23
deny from 46.8.222.0/23
deny from 77.83.84
deny from 77.83.148.0/23
deny from 77.94.1
deny from 84.54.53
deny from 91.188.244
deny from 92.119.193
deny from 94.158.190
deny from 95.182.124.0/22
deny from 109.248.12.0/22
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deny from 109.248.128.0/23
deny from 109.248.138.0/23
deny from 109.248.142.0/23
deny from 109.248.166.0/23
deny from 109.248.204.0/23
deny from 176.53.186
deny from 185.181.244.0/22
deny from 185.181.247
deny from 188.130.128.0/23
deny from 188.130.136.0/23
deny from 188.130.142.0/23
deny from 188.130.184.0/22
deny from 188.130.188.0/23
deny from 188.130.210.0/23
deny from 188.130.218.0/23
deny from 188.130.220.0/23
deny from 192.144.31
deny from 193.53.168
deny from 193.58.168.0/23
deny from 194.32.229
deny from 194.32.237
deny from 194.34.248
deny from 194.35.113
deny from 194.156.92
deny from 194.156.96.0/23
deny from 194.156.123
deny from 212.115.49
deny from 213.226.101
deny from 3.0.0.0/8
deny from 13.32.0.0/12
deny from 13.52.0.0/14
deny from 13.56.0.0/14
deny from 13.112.0.0/14
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deny from 13.228.0.0/14
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deny from 18.116.0.0/14
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deny from 18.144.0.0/15
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deny from 18.148.0.0/16
deny from 18.151.0.0/16
deny from 18.153.0.0/16
deny from 18.160.0.0/16
deny from 18.162.0.0/16
deny from 18.164.0.0/16
deny from 18.175.0.0/16
deny from 18.179.0.0/16
deny from 18.182.0.0/16
deny from 18.184.0.0/15
deny from 18.188.0.0/14
deny from 18.191.0.0/16
deny from 18.194.0.0/15
deny from 18.196.0.0/15
deny from 18.200.0.0/13
deny from 18.208.0.0/12
deny from 18.224.0.0/14
deny from 18.228.0.0/16
deny from 18.231.0.0/16
deny from 18.232.0.0/14
deny from 18.236.0.0/15
deny from 18.236.0.0/15
deny from 18.246.0.0/16
deny from 18.249.0.0/16
deny from 18.253.0.0/16
deny from 23.20.0.0/14
deny from 34.0.0.0/7
deny from 34.192.0.0/10
deny from 35.152.0.0/13
deny from 35.160.0.0/12
deny from 35.176.0.0/13
deny from 44.192.0.0/11
deny from 44.224.0.0/11
deny from 50.16.0.0/14
deny from 50.112.0.0/16
deny from 52.0.0.0/10
deny from 52.64.0.0/12
deny from 52.84.0.0/14
deny from 52.88.0.0/13
deny from 52.119.128.0/17
deny from 52.124.128.0/17
deny from 52.129.128.0/17
deny from 52.144.128.0/17
deny from 52.192.0.0/11
deny from 54.0.0.0/8
deny from 54.64.0.0/11
deny from 54.144.0.0/12
deny from 54.160.0.0/11
deny from 54.192.0.0/12
deny from 54.208.0.0/13
deny from 54.216.0.0/14
deny from 54.220.0.0/15
deny from 54.184.0.0/13
deny from 54.200.0.0/14
deny from 54.212.0.0/15
deny from 54.214.0.0/16
deny from 54.218.0.0/16
deny from 54.224.0.0/11
deny from 63.32.0.0/14
deny from 63.145.114.200/29
deny from 63.158.196.192/29
deny from 63.239.159.232/29
deny from 64.252.64.0/18
deny from 64.252.128.0/18
deny from 65.112.241.232/29
deny from 65.114.179.176/29
deny from 65.156.228.248/29
deny from 67.202.0.0/18
deny from 68.79.0.0/18
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deny from 69.235.128.0/18
deny from 70.130.192.0/18
deny from 70.131.192.0/18
deny from 70.132.0.0/18
deny from 70.224.192.0/18
deny from 70.232.64.0/18
deny from 70.236.0.0/18
deny from 70.237.192.0/18
deny from 70.240.64.0/18
deny from 70.251.64.0/18
deny from 71.131.192.0/18
deny from 71.132.0.0/18
deny from 71.136.64.0/18
deny from 71.137.0.0/18
deny from 71.141.0.0/18
deny from 71.141.128.0/18
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deny from 71.145.128.0/18
deny from 71.152.0.0/17
deny from 72.44.32.0/19
deny from 75.2.0.0/17
deny from 75.2.128.0/18
deny from 75.3.0.0/18
deny from 75.3.128.0/18
deny from 75.22.192.0/18
deny from 75.45.128.0/18
deny from 75.47.0.0/18
deny from 75.47.128.0/18
deny from 75.101.128.0/17
deny from 76.197.128.0/18
deny from 76.205.64.0/18
deny from 76.211.0.0/18
deny from 76.223.0.0/17
deny from 76.223.128.0/19
deny from 76.223.160.0/20
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deny from 76.252.0.0/18
deny from 76.255.64.0/18
deny from 99.10.0.0/18
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deny from 99.76.64.0/18
deny from 99.77.0.0/18
deny from 99.77.128.0/17
deny from 99.78.0.0/18
deny from 99.78.128.0/17
deny from 99.79.0.0/16
deny from 99.80.0.0/15
deny from 99.82.0.0/17
deny from 99.82.128.0/18
deny from 99.83.64.0/18
deny from 99.83.128.0/17
deny from 99.84.0.0/16
deny from 99.85.128.0/17
deny from 99.86.0.0/16
deny from 99.87.0.0/17
deny from 99.87.128.0/18
deny from 99.105.128.0/18
deny from 99.141.0.0/17
deny from 99.144.192.0/18
deny from 99.150.0.0/17
deny from 99.151.64.0/18
deny from 99.151.128.0/18
deny from 99.156.192.0/18
deny from 99.181.64.0/18
deny from 100.20.0.0/14
deny from 100.24.0.0/13
deny from 107.20.0.0/14
deny from 130.137.0.0/16
deny from 140.179.0.0/16
deny from 143.204.0.0/16
deny from 150.222.0.0/16
deny from 157.175.0.0/16
deny from 160.1.0.0/16
deny from 161.189.0.0/16
deny from 174.129.0.0/16
deny from 184.72.0.0/15
deny from 198.233.204.248/29
deny from 204.236.128.0/17
deny from 209.61.110.128/27
deny from 216.182.224.0/20
allow from all
</Limit> 

 Сегодня активизировались боты, якобы переходящие с сайтов

И кто-то проверял, существенно уменьшились боты после этого листа?

Логи снимите, гляньте с каких сетей к Вам ломятся.
Если детально разбираться, то эффект, конечно, есть, но он у каждого будет свой. Они ломятся волнами.
На скрине, как раз, начало попыток нагула из Битерики:

Сегодня их в блоке уже 1252... Вот и считайте.

Чтобы было наглядно понятно, что будет, если нулячий сайт оставить без защиты.
Все переходы - Битерика, за 09.02.2024:

Спасибо)

А если поставить антибота, то боты не смогут зайти. Правильно?