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Ddos on server


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ish12321
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Old 01-11-2018 , 09:20   Ddos on server
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Hey there,
My server is facing heavy ddos attacks regularly. I managed to capture traffic with tcpdump. Please could someone analyse and get a solution please. IPTABLES rule maybe?
https://mega.nz/#!IcE1CCKR!pBVIbon-V...I47mnE5UdfdVoQ
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Relaxing
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Old 01-11-2018 , 10:25   Re: Ddos on server
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This must go to off topic sec.
Have you tried contacting the host provider? They MUST take this case over.
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ish12321
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Old 01-11-2018 , 10:47   Re: Ddos on server
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Host takes toooooooo much extra money for ddos protection. And the imp thing is my bandwidth wasnt overloaded still everything was down...
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DjSoftero
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Old 01-11-2018 , 11:38   Re: Ddos on server
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It means it`s time to switch the host providers.
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ish12321
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Old 01-11-2018 , 12:21   Re: Ddos on server
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No ddos protected host here. Since the bandwidth wasnt flooded I think if correct iptables rules are put (for which I'm asking help) it could prevent the attack or atleast decrease
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edon1337
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Old 01-11-2018 , 12:43   Re: Ddos on server
Reply With Quote #6

Why not just try CloudFlare?
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ish12321
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Old 01-13-2018 , 11:35   Re: Ddos on server
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Cloudflare is only for websites as far as I know.
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edon1337
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Old 01-13-2018 , 12:42   Re: Ddos on server
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Yep, you're right, they support only HTTP/S. Guess you have to switch to a new host.
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Last edited by edon1337; 01-13-2018 at 12:43.
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brlight
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Old 01-13-2018 , 15:56   Re: Ddos on server
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OVH , check their Website
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Old 01-15-2018 , 12:58   Re: Ddos on server
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If the attack don't overload your connection but affects your HLDS stability, you could try filtering using iptables.
As I see your capture, they're using more than 5k bots doing A2S_INFO attack.
Best thing you can try is to rate-limit A2S_INFO packets to avoid high cpu usage on your hlds.


Any action you may take on the server could not stop nor avoid connection overload.
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