The TBL

Hello tees,

After running various servers I noticed that it is quite common that certain tees have a rather bad behavior. To challenge this I started working on some scripts to keep my servers clean.

In the process of creating this "feature" I also thought "well some others may find this useful" so I started working on a way to share the banned users.

Thus now we have the TBL short for Tee Black List.

It basically is quite simply a list of IP addresses that have been or are still breaking the rules I use for my servers ( http://tw.cyanox.nl/rules.php ).

It is partially automatic so not entirely failsafe but so far it works great.

I created a simple script that would list the currently banned IP addresses which is more or less always up to date.

I also made a little script (for linux) that grabs this list and iptables the banned IP addresses:

#!/bin/bash
WORKDIR=/var/tw/

cd $WORKDIR

/sbin/iptables -F INPUT

wget -q http://tw.cyanox.nl/tbl.php -O ${WORKDIR}black.list
if [ ! -e ${WORKDIR}black.list ]
then
  echo Blacklist could not be downloaded.
  exit 1;
fi
IPS=`cat ${WORKDIR}black.list`
rm -f ${WORKDIR}black.list

for i in $IPS
do
  /sbin/iptables -I INPUT -s $i -j DROP
done

This script always flushes iptables so only currently banned IP addresses are actually banned.

Of course how you implement it is irrelevant as long as it works and does not spam the TBL.

I know some people may think this is pointless or stupid or against the spirit of teeworlds but to be honest I'd rather not have vulgar or offensive language on my servers.

So there you have it a way to ban bad tees.

If you want to know how long an IP address will be on the TBL take a look at http://tw.cyanox.nl/rules.php it is listed at the bottom.

Now I'd like your opinion about this and if you want to have the possibility to add IP addresses to the TBL. If you want to add them then how would you like to see this implemented (keep in mind that it must not be abusable).