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Too many bad bots killing website


Why do 'hackers' setup bots repeatedly fill out web forms?DDoS attacks are killing all my servicesHTTP attack - Too many connections & TIME_WAITPermError SPF Too Many Lookups and ReductionHow do I block a user doing too many requests without blocking an entire organization?Too many sendmail instances in “top” commandblock fake google botsBlock requests from bots by pattern in apache with mod_rewrite. mod_rewrite not workingNginx limit_req is killing all requestsiPhone OS 11_3 http connection flood






.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty height:90px;width:728px;box-sizing:border-box;








2















Everyday around 2-3pm, huge amounts of bots are coming to my website and they just kill it. Few days ago it was just 2-3 IPs so I could easily block it, but today more than 600 bots came and kept flooding my website for 3 hours straight. IPs were different, changing and from different parts of the world. 650 apache workers just could not handle it.



These bots are 100% suspicious, because they are reffering from really stupid/random URLs. For example:



209.141.61.45 - - [18/Apr/2019:19:37:03 +0200] "GET ***" 200 23611 "/mhrjh" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.135 Safari/537.36 Edge/12.246"
195.176.3.19 - - [18/Apr/2019:19:37:03 +0200] "GET ***" 200 24330 "https://search.aol.com/search?q=sjhryp" "Mozilla/5.0 (Linux; Android 6.0.1; SM-G920V Build/MMB29K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.98 Mobile Safari/537.36"
172.96.118.14 - - [18/Apr/2019:19:37:04 +0200] "GET ***" 200 22477 "https://yandex.ru/search/?izpyzuxwbn" "Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/604.1.38 (KHTML, like Gecko) Version/11.0 Mobile/15A372 Safari/604.1"


Is there any way I can protect my server from this type of attack? So far, tried geoblocking, but it takes ages for all the foreign IP addresses to be added into iptables.










share|improve this question






















  • Cloudflare has free DDOS protection if you're looking for something like that.

    – Andrew Greer
    Apr 18 at 20:18

















2















Everyday around 2-3pm, huge amounts of bots are coming to my website and they just kill it. Few days ago it was just 2-3 IPs so I could easily block it, but today more than 600 bots came and kept flooding my website for 3 hours straight. IPs were different, changing and from different parts of the world. 650 apache workers just could not handle it.



These bots are 100% suspicious, because they are reffering from really stupid/random URLs. For example:



209.141.61.45 - - [18/Apr/2019:19:37:03 +0200] "GET ***" 200 23611 "/mhrjh" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.135 Safari/537.36 Edge/12.246"
195.176.3.19 - - [18/Apr/2019:19:37:03 +0200] "GET ***" 200 24330 "https://search.aol.com/search?q=sjhryp" "Mozilla/5.0 (Linux; Android 6.0.1; SM-G920V Build/MMB29K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.98 Mobile Safari/537.36"
172.96.118.14 - - [18/Apr/2019:19:37:04 +0200] "GET ***" 200 22477 "https://yandex.ru/search/?izpyzuxwbn" "Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/604.1.38 (KHTML, like Gecko) Version/11.0 Mobile/15A372 Safari/604.1"


Is there any way I can protect my server from this type of attack? So far, tried geoblocking, but it takes ages for all the foreign IP addresses to be added into iptables.










share|improve this question






















  • Cloudflare has free DDOS protection if you're looking for something like that.

    – Andrew Greer
    Apr 18 at 20:18













2












2








2


0






Everyday around 2-3pm, huge amounts of bots are coming to my website and they just kill it. Few days ago it was just 2-3 IPs so I could easily block it, but today more than 600 bots came and kept flooding my website for 3 hours straight. IPs were different, changing and from different parts of the world. 650 apache workers just could not handle it.



These bots are 100% suspicious, because they are reffering from really stupid/random URLs. For example:



209.141.61.45 - - [18/Apr/2019:19:37:03 +0200] "GET ***" 200 23611 "/mhrjh" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.135 Safari/537.36 Edge/12.246"
195.176.3.19 - - [18/Apr/2019:19:37:03 +0200] "GET ***" 200 24330 "https://search.aol.com/search?q=sjhryp" "Mozilla/5.0 (Linux; Android 6.0.1; SM-G920V Build/MMB29K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.98 Mobile Safari/537.36"
172.96.118.14 - - [18/Apr/2019:19:37:04 +0200] "GET ***" 200 22477 "https://yandex.ru/search/?izpyzuxwbn" "Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/604.1.38 (KHTML, like Gecko) Version/11.0 Mobile/15A372 Safari/604.1"


Is there any way I can protect my server from this type of attack? So far, tried geoblocking, but it takes ages for all the foreign IP addresses to be added into iptables.










share|improve this question














Everyday around 2-3pm, huge amounts of bots are coming to my website and they just kill it. Few days ago it was just 2-3 IPs so I could easily block it, but today more than 600 bots came and kept flooding my website for 3 hours straight. IPs were different, changing and from different parts of the world. 650 apache workers just could not handle it.



These bots are 100% suspicious, because they are reffering from really stupid/random URLs. For example:



209.141.61.45 - - [18/Apr/2019:19:37:03 +0200] "GET ***" 200 23611 "/mhrjh" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.135 Safari/537.36 Edge/12.246"
195.176.3.19 - - [18/Apr/2019:19:37:03 +0200] "GET ***" 200 24330 "https://search.aol.com/search?q=sjhryp" "Mozilla/5.0 (Linux; Android 6.0.1; SM-G920V Build/MMB29K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.98 Mobile Safari/537.36"
172.96.118.14 - - [18/Apr/2019:19:37:04 +0200] "GET ***" 200 22477 "https://yandex.ru/search/?izpyzuxwbn" "Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/604.1.38 (KHTML, like Gecko) Version/11.0 Mobile/15A372 Safari/604.1"


Is there any way I can protect my server from this type of attack? So far, tried geoblocking, but it takes ages for all the foreign IP addresses to be added into iptables.







spam ddos botnet






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Apr 18 at 19:30









lamka02sklamka02sk

111




111












  • Cloudflare has free DDOS protection if you're looking for something like that.

    – Andrew Greer
    Apr 18 at 20:18

















  • Cloudflare has free DDOS protection if you're looking for something like that.

    – Andrew Greer
    Apr 18 at 20:18
















Cloudflare has free DDOS protection if you're looking for something like that.

– Andrew Greer
Apr 18 at 20:18





Cloudflare has free DDOS protection if you're looking for something like that.

– Andrew Greer
Apr 18 at 20:18










1 Answer
1






active

oldest

votes


















1














DDOS attacks are difficult to mitigate, as you've found (and this does at least appear to be that). You can use a service such as fail2ban to ban those IPs from connecting to the web server, and in a limited attack this may help. However, it takes a few repetitive requests to ban an IP, and that may be more requests than the webserver can handle in even that amount of time.



A good solution to this problem is using a CDN (content delivery network) to establish a cache for static content that doesn't need to touch your origin server in order to be served to clients. There are paid CDNs out there with many features, including DDOS protection by implementing that same banishment method in addition to other methods (though on a much larger network that can handle the initial spike).



However, a sustained and sufficiently diverse DDOS attack can turn what would have been website downtime into a large bill from your CDN provider if things are not addressed in time.






share|improve this answer


















  • 1





    Fail2Ban is a good solution if the scale is right. I've had this problem in the past and an http-get-dos rule solved it. Rapid7 has a nice blog post on setting up fail2ban quickly if you're not familiar.link here

    – Michael
    Apr 18 at 21:08











Your Answer








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1 Answer
1






active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes









1














DDOS attacks are difficult to mitigate, as you've found (and this does at least appear to be that). You can use a service such as fail2ban to ban those IPs from connecting to the web server, and in a limited attack this may help. However, it takes a few repetitive requests to ban an IP, and that may be more requests than the webserver can handle in even that amount of time.



A good solution to this problem is using a CDN (content delivery network) to establish a cache for static content that doesn't need to touch your origin server in order to be served to clients. There are paid CDNs out there with many features, including DDOS protection by implementing that same banishment method in addition to other methods (though on a much larger network that can handle the initial spike).



However, a sustained and sufficiently diverse DDOS attack can turn what would have been website downtime into a large bill from your CDN provider if things are not addressed in time.






share|improve this answer


















  • 1





    Fail2Ban is a good solution if the scale is right. I've had this problem in the past and an http-get-dos rule solved it. Rapid7 has a nice blog post on setting up fail2ban quickly if you're not familiar.link here

    – Michael
    Apr 18 at 21:08















1














DDOS attacks are difficult to mitigate, as you've found (and this does at least appear to be that). You can use a service such as fail2ban to ban those IPs from connecting to the web server, and in a limited attack this may help. However, it takes a few repetitive requests to ban an IP, and that may be more requests than the webserver can handle in even that amount of time.



A good solution to this problem is using a CDN (content delivery network) to establish a cache for static content that doesn't need to touch your origin server in order to be served to clients. There are paid CDNs out there with many features, including DDOS protection by implementing that same banishment method in addition to other methods (though on a much larger network that can handle the initial spike).



However, a sustained and sufficiently diverse DDOS attack can turn what would have been website downtime into a large bill from your CDN provider if things are not addressed in time.






share|improve this answer


















  • 1





    Fail2Ban is a good solution if the scale is right. I've had this problem in the past and an http-get-dos rule solved it. Rapid7 has a nice blog post on setting up fail2ban quickly if you're not familiar.link here

    – Michael
    Apr 18 at 21:08













1












1








1







DDOS attacks are difficult to mitigate, as you've found (and this does at least appear to be that). You can use a service such as fail2ban to ban those IPs from connecting to the web server, and in a limited attack this may help. However, it takes a few repetitive requests to ban an IP, and that may be more requests than the webserver can handle in even that amount of time.



A good solution to this problem is using a CDN (content delivery network) to establish a cache for static content that doesn't need to touch your origin server in order to be served to clients. There are paid CDNs out there with many features, including DDOS protection by implementing that same banishment method in addition to other methods (though on a much larger network that can handle the initial spike).



However, a sustained and sufficiently diverse DDOS attack can turn what would have been website downtime into a large bill from your CDN provider if things are not addressed in time.






share|improve this answer













DDOS attacks are difficult to mitigate, as you've found (and this does at least appear to be that). You can use a service such as fail2ban to ban those IPs from connecting to the web server, and in a limited attack this may help. However, it takes a few repetitive requests to ban an IP, and that may be more requests than the webserver can handle in even that amount of time.



A good solution to this problem is using a CDN (content delivery network) to establish a cache for static content that doesn't need to touch your origin server in order to be served to clients. There are paid CDNs out there with many features, including DDOS protection by implementing that same banishment method in addition to other methods (though on a much larger network that can handle the initial spike).



However, a sustained and sufficiently diverse DDOS attack can turn what would have been website downtime into a large bill from your CDN provider if things are not addressed in time.







share|improve this answer












share|improve this answer



share|improve this answer










answered Apr 18 at 19:54









SpoolerSpooler

6,1941228




6,1941228







  • 1





    Fail2Ban is a good solution if the scale is right. I've had this problem in the past and an http-get-dos rule solved it. Rapid7 has a nice blog post on setting up fail2ban quickly if you're not familiar.link here

    – Michael
    Apr 18 at 21:08












  • 1





    Fail2Ban is a good solution if the scale is right. I've had this problem in the past and an http-get-dos rule solved it. Rapid7 has a nice blog post on setting up fail2ban quickly if you're not familiar.link here

    – Michael
    Apr 18 at 21:08







1




1





Fail2Ban is a good solution if the scale is right. I've had this problem in the past and an http-get-dos rule solved it. Rapid7 has a nice blog post on setting up fail2ban quickly if you're not familiar.link here

– Michael
Apr 18 at 21:08





Fail2Ban is a good solution if the scale is right. I've had this problem in the past and an http-get-dos rule solved it. Rapid7 has a nice blog post on setting up fail2ban quickly if you're not familiar.link here

– Michael
Apr 18 at 21:08

















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