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[FreeBSD]Little Flooder & DDOS Etc. Blocker
Discussion on [FreeBSD]Little Flooder & DDOS Etc. Blocker within the Metin2 PServer Guides & Strategies forum part of the Metin2 Private Server category.
01/01/2011, 17:45
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#16
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Join Date: Jan 2010
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hm, a hardwarefirewall is better^^
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01/01/2011, 17:54
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#17
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Join Date: Jun 2008
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Das ist ja geil, schreib ich mir dann mal für Debian um, soetwas hab ich nämlich die ganze Zeit schon gesucht, vielen Dank.
MfG Hanashi
Edit: zieht euch kein Webmin drauf, Crontabs selbst machen wird weniger Sicherheitslücken aufweisen, als Webmin
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01/01/2011, 21:32
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#18
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Join Date: Oct 2010
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Das hat ja mal garnix mit Metin2 zu tun
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01/15/2011, 20:48
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#19
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Quote:
Originally Posted by Silfro95
hmm at webmin part:
After I click make instal clean then only error...
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download this files and copy to /usr/ports/distfiles/ and try again.
Quote:
Originally Posted by .Zander
hm, a hardwarefirewall is better^^
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Yes but too expensive $$ .
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01/22/2011, 13:35
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#20
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Join Date: May 2009
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I have made a little mod in the script , to not use webmin crontab
Code:
#!/bin/sh
FR_MIN_CONN=200
TMP_PREFIX='/tmp/frrr'
TMP_FILE=`mktemp $TMP_PREFIX.XXXXXXXX`
i=1
while [ $i -le 55 ]
do
/usr/bin/netstat -ntu -f inet| awk '{if(NR>2 && NF=6) print $5}' | cut -d. -f1-4 | grep '^[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}$' | sort | uniq -c | sort -nr > $TMP_FILE
while read line; do
CURR_LINE_CONN=$(echo $line | cut -d" " -f1)
CURR_LINE_IP=$(echo $line | cut -d" " -f2)
if [ $CURR_LINE_CONN -lt $FR_MIN_CONN ]; then
break
fi
/sbin/route -q add $CURR_LINE_IP 127.0.0.1
/bin/echo $CURR_LINE_IP >> /home/banlist.txt
/bin/echo "Subject: $CURR_LINE_IP ipden $CURR_LINE_CONN Connect Refused." | /usr/sbin/sendmail -F -t zzz@***.com
done < $TMP_FILE
/bin/rm -f $TMP_PREFIX.*
sleep1
i=`expr $i + 1`
done
and when i run itd , its every 1 sec from 1 to 55 (posibbly better is 59) make loop , but it gives me ,
Code:
route cannost write to socket : File exist
What is this error?
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01/31/2011, 23:42
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#21
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Join Date: Dec 2009
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Quote:
Originally Posted by gemini300
I have made a little mod in the script , to not use webmin crontab
Code:
#!/bin/sh
FR_MIN_CONN=200
TMP_PREFIX='/tmp/frrr'
TMP_FILE=`mktemp $TMP_PREFIX.XXXXXXXX`
i=1
while [ $i -le 55 ]
do
/usr/bin/netstat -ntu -f inet| awk '{if(NR>2 && NF=6) print $5}' | cut -d. -f1-4 | grep '^[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}$' | sort | uniq -c | sort -nr > $TMP_FILE
while read line; do
CURR_LINE_CONN=$(echo $line | cut -d" " -f1)
CURR_LINE_IP=$(echo $line | cut -d" " -f2)
if [ $CURR_LINE_CONN -lt $FR_MIN_CONN ]; then
break
fi
/sbin/route -q add $CURR_LINE_IP 127.0.0.1
/bin/echo $CURR_LINE_IP >> /home/banlist.txt
/bin/echo "Subject: $CURR_LINE_IP ipden $CURR_LINE_CONN Connect Refused." | /usr/sbin/sendmail -F -t zzz@***.com
done < $TMP_FILE
/bin/rm -f $TMP_PREFIX.*
sleep1
i=`expr $i + 1`
done
and when i run itd , its every 1 sec from 1 to 55 (posibbly better is 59) make loop , but it gives me ,
Code:
route cannost write to socket : File exist
What is this error?
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files already exist
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02/09/2011, 06:43
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#22
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elite*gold: 0
Join Date: Feb 2011
Posts: 432
Received Thanks: 88
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ähm klappt denn das skript jetzt oder nicht? Hab nämlich ein bisschen Bedenken, wenn ich meinen Root Server anschmeisse, dass da en ddos angriff kommt.  Schon bei jemandem geklappt?
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02/09/2011, 07:08
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#23
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elite*gold: 265
Join Date: Feb 2011
Posts: 79
Received Thanks: 19
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Natürlich wieso sollte das nicht funken?
Du kannst natürlich deinen Luut auch via. IPFW sichern was auch nicht schlecht ist.
Am besten schauen das keiner an die IP kommt.
Und dieses Skript macht folgendes es blockt IP die versuchen den Server zu flooden das heißt nachdem die IP geblockt ist hört auch der DDoS auf.
Ein gutes Skript deshalb.
Daniiel'
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02/09/2011, 08:07
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#24
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elite*gold: 0
Join Date: Feb 2011
Posts: 432
Received Thanks: 88
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ok gut danke. Ich probiers mal aus.
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02/15/2011, 13:12
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#25
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Join Date: Apr 2010
Posts: 92
Received Thanks: 1
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it isnt working.
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02/15/2011, 13:27
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#26
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elite*gold: 112
Join Date: Jan 2010
Posts: 1,531
Received Thanks: 414
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Es funktioniert schon, aber es hilft nicht gegen ein DDOS.
Das einzige was das Script macht, es blockt die Homepage bei ca. 20-30 aufrufen der Homepage.
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02/15/2011, 14:25
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#27
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elite*gold: 0
Join Date: Jan 2011
Posts: 1,484
Received Thanks: 3,151
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Würde nen PF empfehlen, ist sicherer.
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