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Is this a DDoS?

asked 2019-09-22 16:04:56 +0000

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Hi, I created a game server to play with some friends, and other people just started randomly connecting to my server, then by the time I had about 20 people on my server I start to have severe connection problems, the first symptom was that everyone on Discord suddenly sounds like a robot, then everyone on the game server complains about lag and suddenly half the server gets kicked for Steam Auth: Failed. The computer is brand new, my internet is 200Mbps Down/100Mbps Up fiber so I knew it wasn't about my specs or connection and after some google searches I was sure I am being DDoS'ed. When I look at Wireshark I see a lot of 67 byte connections from random IPs with Source Engine Querry, but maybe I get that every time a player gets my server visible from their ingame server browser? The game is Rust, by the way.

https://mega.nz/#!VQIglK6S!Jn01mSUmTR...

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answered 2019-09-22 17:44:31 +0000

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It does seem your gameserver is attacked by "Source Engine Query" packets which are part of the libraries used by steam

(see: https://security.stackexchange.com/questions/100519/tsource-engine-query-ddos-attack)

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Asked: 2019-09-22 16:04:56 +0000

Seen: 295 times

Last updated: Sep 22 '19