Q: How do I know if my server is being DDOSed?
#1

Hi everyone, I'm using a VPS from the OVH to host my server.

I was wondering how to know if my server is being DDOsed, considering the fact that the hosting provider will not notify me if there's any.

And also how can I get the attacker's source? The attacker's ip, etc?
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#2

Quote:
Originally Posted by Uberanwar
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Hi everyone, I'm using a VPS from the OVH to host my server.

I was wondering how to know if my server is being DDOsed, considering the fact that the hosting provider will not notify me if there's any.

And also how can I get the attacker's source? The attacker's ip, etc?

The way you can have any idea of your servers being attacked; is when it goes offline
Does it go down/shut down and prevents you from accessing it?

If you'd like to know the Internet Protocol (IP), you'd have to contact your service provider on the issue and get them to fix or prevent it from happening again.
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#3

you can check if there is any incoming connections. (gO0gle it)
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#4

You can ask your hosting provider for that
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#5

You will receive an email if there's an incoming attack and when it ends. You won't get any IP data of attackers.
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#6

As stated by Astralis, you'd receive an email from OVH when the attack commences, and also when it stops.
The other symptoms of a possible attack could be abnormal increase of your/players' ping to the server. It may also cause repetitive server time-outs or server might repetitively restart, etc.

You aren't fetched with any IP of the attacker by OVH. You can however use tcpdump and try capturing the all the packets for a period during the attack and then manually narrow down to a possible IP.
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#7

If you're getting attacked and its a windows VPS you could use WireShark and send them the logs, they will know what to do.
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#8

Thank you everyone. Just contacted the OVH Hosting and they did not detect any DDoS attacks.

So I thought there might be someone who used a kind of hack that crashed the server (yes the server was really crashed). Before it happened, someone previously threatened to do so. I wonder what kind of hack is that?

I checked my server logs but there is no clue.
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#9

Most likely its a script issue, in that case, which crashes the server when a certain function/action is triggered by a player. You need to check the code.
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#10

Quote:
Originally Posted by Uberanwar
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Thank you everyone. Just contacted the OVH Hosting and they did not detect any DDoS attacks.

So I thought there might be someone who used a kind of hack that crashed the server (yes the server was really crashed). Before it happened, someone previously threatened to do so. I wonder what kind of hack is that?

I checked my server logs but there is no clue.
You'd need a crashdetect plugin with -d3 -r params to see what really crashes it.
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