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Web Server Hack – How to Use DDoS Deflate to Protect Against DoS Flooding!

max — Tue, 18 Aug 2009 02:58:30 +0000

I have been using DDoS Deflate, which is a simple script that will automatically help you against DoS attacks on your server. Basically it works by killing any HTTPD processes/banning IPs that reach more than set number of TCP connections.

It’s a great script since it’s free, simple, and works well against DoS attacks. Yes, forget paying that extra hundred dollars to your server company, who’s going to probably install this script anyways.

The real gem of the DDoS Deflate script lies in configuration. Depending on how you configure the DDoS script, you can protect yourself in number of different ways.

To install, simply follow these directions on your SSH command prompt in the linux server:

wget http://www.inetbase.com/scripts/ddos/install.sh
chmod 0700 install.sh
./install.sh

After installing, go to the directory /usr/local/ddos, where the configuration files are.

If you open up ddos.conf file using your favorite editor, you can edit the following settings for getting the most out of the script:

NO_OF_CONNECTIONS=150

This is the number of connections before your server kills/bans that IP address for a set amount of time. I think 150 works well but if you are suddenly getting attacked from smart hackers with many, many IPs, you could probably adjust this to a very low number.

BAN_PERIOD=600

You can adjust the BAN_PERIOD setting to set amount of time to ban that IP since you don’t want to ban the IP permanently, there could be other innocent visitors sharing the same IP.

You can first use the default settings in the beginning and play around a bit.

The script will also e-mail you under the default domain name root@mysite.com whenever an IP reaches beyond the maximum number of allowed connections. Make sure you set the e-mail correctly so you receive those alerts if you want them by editing the EMAIL_TO variable in the ddos.conf.

Using More than 1 server?

For example, you can also “whitelist” IP addresses that might be connected to your server such as your MySQL server by editing the file ignore.ip.list file under the same directory. By the way, I’ve accidently forgot to whitelist my MySQL server before and my website started showing “Database Connection Error”, don’t let that happen to you.

Well, that’s about it, this script is pretty good against DoS flooding so you don’t have to be manually messing with your iptables or whatnot. I install this script on everyone of my VPS/dedicated servers and you should too just in case some hacker decided to flood you with garbage.

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Web Server Hack – How to Use DDoS Deflate to Protect Against DoS Flooding!

Note to Spammers and Hackers

max — Thu, 26 Mar 2009 04:16:42 +0000

Dear Spammer and Hacker who’s trying to spam this site,

STOP! Your IP addresses are being reported to FBI for interuption/spamming act.

LAMO, and stop trying to leave nasty comments, that will only get you IP-banned, this is my site, not yours.

Take your nasty comments elsewhere, spammers and hackers (without class) are not for Zedomax.com.

If you are going to leave a nasty comment, you will receive a nasty comment back.

For everyone else, sorry if the site has been down, there’s been a lot of DoS attacks we have been receiving but fighting very hard.

We are working on reverse-hacking the spammers/hackers and they have all been reported to FBI so things should be resolved. (Have a great time packing up your bag and going somewhere else to hide while the feds are coming after you.)

Btw, your elite proxies aren’t good enough buds, try harder, I am a hacker too.

Best regards,

Max :p

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Note to Spammers and Hackers

MySQL DIY – How to Apply IP Geo-Location Using MySQL!

max — Wed, 25 Mar 2009 17:03:39 +0000

Here’s a great resource for IP geo-location, there’s a guy who’s made a MySQL table for it, so all you need to do is check the IP address against the database. I have personally been thinking of making such a site and this is going to help me do that, awesome! I hope it helps you too.

The IP addresses are listed in table ip_group_city. The data is not in the 1.1.1.1 format since it would need to be stored as text and we dont want that for obvious reasons.
Let say for ip A.B.C.D, the formula is
ip = (A*256+B)*256+C
(I assume A.B.C.0 is at the same location than A.B.C.255)

For example, if you have an ip of 74.125.45.100 (google.com)

The formula would give a result of :
ip = (74*256+125)*256+45 = 4881709

You would search for the IP address using MySQL by doing :
SELECT * FROM `ip_group_city` where `ip_start` <= 4881709 order by ip_start desc limit 1;

via make

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MySQL DIY – How to Apply IP Geo-Location Using MySQL!

DIY Phone Dial Web Browser!

max — Tue, 07 Oct 2008 10:11:46 +0000

This has to be the most wackiest DIY ever, a phone dial that let’s you browser the web via IP addresses.

Well, technically, you won’t be able to surf the web with this phone dial unless you can remember IP addresses of every website you visit but still is a cool project.

Let’s just say this DIY is more of an artwork than it is a practical thing to make.

Our relationship with technology is quickly becoming analogous to our relationship with fast food. Like the fast food restaurant chain McDonalds, information technology (e.g. the internet) seems to be everywhere. We expect it to be fast, and collectively value convenience and eﬃciency over elegance and craft. In the Phone Dial Web Browser, I ask how we might bring beauty and appreciation for craft back into our interaction with the now commonplace, pervasive web browser.

via make, DIY Page

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DIY Phone Dial Web Browser!

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Web Server Hack – How to Use DDoS Deflate to Protect Against DoS Flooding!

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