HELP!!!!!! Need protection DDOS & FLOOD

[yonick1990 0]

Hello !
I need protection DDOS & FLOOD for my private server metin2. 

I have a metin2 server, and a stupid kid it´s killing it and I don´t know how. 

Pleaseeeeeee heeeeelp !!!!!!!!!

[terrorr 15]

Where you have dedicated server?

[yonick1990 0]

ovh

[Zeke 806]

maybe this kid you said he flood the login port or the game port if something like this happen do this:

1. Open putty
2. write ee ddos.sh
3. paste this code:

Spoiler

#!/bin/sh
FR_MIN_CONN=200
TMP_PREFIX='/tmp/frrr'
TMP_FILE=`mktemp $TMP_PREFIX.XXXXXXXX`
/usr/bin/netstat -nu -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 >> /root/banlist.txt
/bin/echo "Subject: $CURR_LINE_IP ipden $CURR_LINE_CONN Connect Refused." | /usr/sbin/sendmail -F [email protected] -t [email protected]
done < $TMP_FILE
/bin/rm -f $TMP_PREFIX.*

4.write on putty again: ee banlist.txt
5.give permisions 777 to this two files
6. when this guy flood you just press on putty: sh ddos.sh
if this dont work it means is not Ddos or something like this. check your p2ports (change them if you have the defaults)

[yonick1990 0]

thanks ! everytime that my server is down, I have this error  in game 1-sysser

 SYSERR: Jun 27 19:58:25.559293 :: DirectQuery: AsyncSQL::DirectQuery : mysql_query error: Duplicate entry '270000033' for key 'PRIMARY'
query: INSERT INTO offline_shop_item (id,owner_id,pos,count,price,vnum,socket0,socket1,socket2,socket3,attrtype0,attrvalue0,attrtype1,attrvalue1,attrtype2,attrvalue2,attrtype3,attrvalue3,attrtype4,attrvalue4) VALUES (270000033,643,56,1,100000000,16009,0,0,0,0,31,10,0,0,0,0,0,0,0,0)
SYSERR: Jun 27 19:58:29.45880 :: pid_init: 
Start of pid: 21038

[Zeke 806]

just check the table:  offline_shop_item if the fields here is all right i mean if all this field's exist:  id,owner_id,pos,count,price,vnum,socket0,socket1,socket2,socket3,attrtype0,attrvalue0,attrtype1,attrvalue1,attrtype2,attrvalue2,attrtype3,attrvalue3,attrtype4,attrvalue
and try to repear the table (btw i dont think thats the problem your server will go down. this may only a bug/ or lagg the server i dont think it can go down with this)

[yonick1990 0]

I have only this fields   

 https://metin2.download/picture/9aIYYNkDwdjfL2TOjK2UR52iPFi71n2V/.png

Edited September 3, 2022 by Metin2 Dev
Core X - External 2 Internal