<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Same here<div><span class="Apple-tab-span" style="white-space:pre"> </span>same destination IP same port (5121)</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>500 pps on 2 instances of cod 2, cod 4 servers not affected.</div><div>incoming traffic just less than 768 Kbit/s. Probably they have good upload "pipes" from where they start the attack.</div><div><br><div><div>On Oct 25, 2011, at 3:06 PM, Marco Padovan wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">
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<font size="-1"><font face="Verdana">Looks like the trend is
increasing :|<br>
<br>
currently one of our network filters is reporting:<br>
rx: 7.14 Mbit/s 11064 p/s tx: 3.62 Mbit/s 2764
p/s<br>
<br>
disabling the filters and passing everything to the cod2 servers
the resulting tx bandwidth is a constant 25mbit/sec stream :/<br>
<br>
current IP being spoofed targeting cod2 servers (all versions
"exploited"... both 1.0 and 1.3):<br>
208.93.152.122 (port 5121)<br>
<br>
to check out if your server is currently being exploited:<br>
tcpdump -nn host </font></font><font size="-1"><font face="Verdana">208.93.152.122</font></font><br>
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<br>
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Il 25/10/2011 12:43, Luca Farflame Fabbro ha scritto:
<blockquote cite="mid:69568867-D96E-4570-9176-E0FD81DB7687@cybergames.it" type="cite">
<pre wrap="">Hi Ryan
in one of your previous messages you mentioned that this patch can be "ported" also to the other COD servers. Is there any plan to do this?
Now it seems that even if the server are less in number they target the COD2 servers to do the DDOS attacks. Don't have any COD server running so I don't know if also those are used as reflectors.
Just one simple question regarding the patch fort the COD4 server.
If you leave the server up'n running for a certain period of time (no restart for 3 weeks let's say) it seems that when the
sv_queryIgnoreMegs
limit is reached (our servers don't have a lot of players) the server starts to reply to the query with the spoofed IP's. A restart of the server solves the problem.
I know that it will be better to restart the server before that time but would it be a possible solution to flush the stored bad IP's and restart the check on the new incoming packets when the predefined memory is full or just before this happens (% or minimum sv-ignore free memory)? Usually the attackers use the server as a reflector only for a certain amount of time (form 1 hour or less to a maximum of 2 - 3 days) then a lot of time will pass before having the same IP used as destination of the DDOS attack.
Regards
Luca
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</pre>
</blockquote>
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