Spamming Serv

NiceGuyx · **Author**

Please delete this post

sheo · 02-08-2015 , 16:17 Re: A2S_INFO Spam Attack [PAYING 150$] FOR FIX.

I believe there is an SM extension that already exists

Mainstaff · *Last edited by Mainstaff; 02-08-2015 at 16:38.*

If the request ips are spoofed you have to limit the requests per second for all ips. Otherwise, if the requests are sent only from a "few" ips you can limit the requests per ip. E.g:

Code:

iptables -A INPUT -p udp --dport 27015 -m string --hex-string "|ffffffff54|" --to 32 --algo bm -m hashlimit --hashlimit-name ServerQueries --hashlimit-above 5/second --hashlimit-burst 10 --hashlimit-htable-size 102400 --hashlimit-mode srcip -j DROP

Good luck

Edit: Depending on the size of the attack it may also help to increase sv_max_queries_sec_global. However, if it's a bigger attack you should NOT do that.

NiceGuyx · *Last edited by NiceGuyx; 02-08-2015 at 18:10.*

Thanks you for your answer.

The attacker always use Spoofed IP to attack my server.

But the problem is that my server appear offline for hours. and the only way to connect to the server is by using: "connect <ip>" in console.

Is there anyway to fix it? because i saw a lot of servers that have already fixed this kind of attack.

NiceGuyx · *Last edited by NiceGuyx; 02-08-2015 at 18:22.*

I just tried your rule.

And it's doesn't seems to works

I'm getting attacked at the same time, and the DROP count is still at: 0

11530 · *Last edited by 11530; 02-08-2015 at 19:55.*

Did you try sheo's suggestion?

[EXTENSION] Query Cache (AS2_INFO DoS protection)

Extension is only for Windows and you're using Linux. Nevermind.

Fearts · 02-08-2015 , 23:45 Re: A2S_INFO Spam Attack [PAYING 150$] FOR FIX.

Quote:

Originally Posted by 11530

Did you try sheo's suggestion?

[EXTENSION] Query Cache (AS2_INFO DoS protection)

Extension is only for Windows and you're using Linux. Nevermind.

https://forums.alliedmods.net/showth...34373?t=134373

This has Linux.

Zephyrus · 02-09-2015 , 01:06 Re: A2S_INFO Spam Attack [PAYING 150$] FOR FIX.

sourcemod doesnt work on garrys mod. anyway add me on steam i can help you

sheo · 02-09-2015 , 01:52 Re: A2S_INFO Spam Attack [PAYING 150$] FOR FIX.

Quote:

Originally Posted by Fearts

https://forums.alliedmods.net/showth...34373?t=134373

This has Linux.

Accoring to the description, it does not properly report tags. It`s important for some games, such as TF2. Also, 5s refresh is too rare.

NiceGuyx · 02-09-2015 , 05:36 Re: A2S_INFO Spam Attack [PAYING 150$] FOR FIX.

@Zephyrus

Can you give me the link of your Steam Profile? so i can add you on my friends list.

Thank you