IPBan – The Simplest Way to Block Hackers and Bot Nets




IPBan for Windows Donation

Is your server getting hacked? Do you need to block ip addresses automatically? Dealing with a brute force attack? Don’t want to spend your life savings on SysPeace or other overly priced security software? IPBan is for you.

A while ago, I noticed a disturbing trend in the event viewer on one of our dedicated Windows servers. We were getting thousands of failed login attempts to terminal services (remote desktop). I decided I would enable the terminal services auto-ban, so after 5 login attempts the ip address would get banned for 24 hours. This only solved part of the problem, as the attacker continued to flood our server with requests, causing the windows logon process (csrss.exe kept appearing and disappearing in task manager) to continually spin up and shut down. This actually caused significant CPU (10%+) and disk IO as the event viewer continually wrote failed login attempts.

After searching the Interwebs for a better way, I did not find anything that I liked or that didn’t spike my CPU usage, so I decided to make a free (if you install it yourself) tool in C# to auto-ban ip addresses. This tool is constantly improving. Right now it can block ip addresses as found in the event log for audit-failure events. It is very configurable as well.

Features include:
– Unlimited number of ip addresses to ban
– Duration to ban ip address
– Number of failed login attempts before ban
– Whitelist of comma separated ip addresses or regex to never ban
– Blacklist of comma separated ip addresses or regex to always ban
– Custom prefix to windows firewall rules
– Custom keywords, XPath and Regex to parse event viewer logs for failed login attempts
– Refreshes config so no need to restart the service when you change something
– Highly configurable, ban anything that comes through Windows Event Viewer
– A GREAT and FREE (if you install it yourself) alternative to RdpGuard or Syspeace
– Contains configuration to block Remote Desktop attempts, Microsoft SQL Server login attempts and MySQL Server login attempts by default
– Runs on Linux and Windows

If you found IPBan useful, would you consider helping support the project by donating? Thank you for your consideration.

I am also willing to do contracting work to improve IPBan if it doesn’t fit your needs or to help you set it up on your servers. Please email me at [email protected] if you would like paid services.

*INSTRUCTIONS*: https://github.com/jjxtra/IPBan




Windows IPBan Donation

Need help configuring IPBan? I’m happy to help with simple questions. For more involved assistance, I do consulting. Please email me at [email protected] and I’d be happy to consider your proposal.

Testimonials:

A few days ago I was checking the event logs for my server that hosts a MSSQL DB. I could see that I was under attack by a port scanner (changing IP addresses for each attack ‘period’). I know I should not have MSSQL exposed to the world but the users are remote so it was the easiest solution for me. Anyway, I came across IPBAN. Because of the concise directions on your Git repository I was able to easily setup a service. The results were immediate, as the banlog.txt file had an entry immediately after starting the service, thus putting an end to the current attack. The purpose of this email is simply to express my gratitude for developing the program. The people responsible for the attack are the lowlifes of the internet while you are on the complete opposite side of the scale! Thank you, thank you, thank you for the help.

– Jim

Bravo! This is a master piece!

– Periklis

Really a neat tool. This really works as advertised, and wow does it cut down on the noise. Your code structure made it really easy as well to add a couple lines to immediately ban non-US IPs (using a 3rd party geocoding service). Thanks for this great tool.

– Matt C

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Windows IPBan Donation
Visit this Project on GitHub

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Alex
Guest
Alex

Hi Again! I have increased failed attempts up to 10, set expire time to 30 sec, I have no IP’s or usernames blacklisted, no Regex Blacklist, I have a set of whitelisted static IP’s and user names, and LAN IP’s whitelisted with Regex. I’ve run IPBan with Debug for testing on why my phone it’s getting banned everytime, and even with expire count set to 30 secs, and no data set on Blacklist config, log always shows this: 2018-06-21 10:51:30.5954|INFO|FileLogger|Incrementing count for ip xxx.xxx.xx.xxx to 1, user name: 2018-06-21 10:51:30.6110|ERROR|FileLogger|Banning ip address: xxx.xxx.xx.xxx, user name: , black listed: True, count:… Read more »

Alex
Guest
Alex

Hello! First of all, wonderful tool! Thanks for sharing it I’ve been using IPBan for two weeks now, It’s been working like a charm, but since yesterday, everytime I connect from home or from my phone through RDP, bans me everytime! I’ve whitelisted my username, removed my ip’s from banlog, and I have set failed login attempts to a value of 6. Curious thing, from my phone for example, I can connect to RDP, I can see the desktop and even IPBan console window. But after a minute or less, IPBan just get’s my IP and throws it into the… Read more »

Rob Morin
Guest
Rob Morin

I’m trying to run the binaries compiled on 5/23/18 on a Windows 7 Home Premium box and I’m getting the following error:
2018-06-12 07:18:04.3764|INFO|FileLogger|Started IPBan service
2018-06-12 07:18:05.2814|ERROR|FileLogger|Failed to create event viewer watcher:
System.Diagnostics.Eventing.Reader.EventLogNotFoundException: The specified cha
nnel could not be found. Check channel configuration
at System.Diagnostics.Eventing.Reader.EventLogException.Throw(Int32 errorCode
)
at System.Diagnostics.Eventing.Reader.NativeWrapper.EvtSubscribe(EventLogHand
le session, SafeWaitHandle signalEvent, String path, String query, EventLogHandl
e bookmark, IntPtr context, IntPtr callback, Int32 flags)
at System.Diagnostics.Eventing.Reader.EventLogWatcher.StartSubscribing()
at IPBan.IPBanService.SetupEventLogWatcher() in C:\Users\Jeff\Documents\GitHu
b\Windows-IP-Ban-Service\IPBanService.cs:line 554
2018-06-12 07:18:05.5374|INFO|FileLogger|Whitelist: 127.0.0.1,fe80::3190:9276:cb
dd:65e5%10,192.168.1.2,::1,0.0.0.0,-, Whitelist Regex:
2018-06-12 07:18:05.5424|INFO|FileLogger|Blacklist: , Blacklist Regex:
Press ENTER to quit

I’m not sure what to do.

Thank you

Meridio Veintiuno
Guest
Meridio Veintiuno

First of all, thanks to dev for this software! I want to share my experiences with IPBAN.  I´m a WINDOWS 7 user.  Trying to understand how it works, I´ve got some problems… Is IPBAN windows 7 compatible? (latest windows updates) Does regionalization (spanish language OS) affects operation? .NET 4.7 present (doesn´t allow 4.5 installation)  In registry, Microsoft-Windows-RemoteDesktopServices-RdpCoreTS/Operational is not present. (error msg) This is my log dump; 2018-06-04 13:04:21.2180|INFO|FileLogger|Started IPBan service 2018-06-04 13:04:21.3370|ERROR|FileLogger|Failed to create event viewer watcher: System.Diagnostics.Eventing.Reader.EventLogNotFoundException: No se puede encontrar el canal especificado. Compruebe la configuración del canal en System.Diagnostics.Eventing.Reader.EventLogException.Throw(Int32 errorCode) en System.Diagnostics.Eventing.Reader.NativeWrapper.EvtSubscribe(EventLogHandle session, SafeWaitHandle signalEvent, String path,… Read more »

Thomas Swafford
Guest
Thomas Swafford

First – fantastic tool!

Question:  does the tool have the ability to parse acsii [text] log files?  For example, I’m looking for a way to read Exchange SMTP logs and have IPBAN pick up those failed logins as well.

The default source directory is: C:\Program Files\Microsoft\Exchange Server\V15\TransportRoles\Logs\FrontEnd\ProtocolLog\SmtpReceive

Sample log entry to generate a ban is:

2018-06-01T11:27:18.670Z,EXCH1\Default Frontend EXCH1,08D5C528F450549E,15,192.168.1.13:25,220.179.219.29:49383,*,,Inbound AUTH LOGIN failed because of LogonDenied

MalcolmReynoldsWrap
Guest
MalcolmReynoldsWrap

Getting the following error from the downloaded link on Sever 2012 R2. I am unable to comment out the lines using the GIThub download as the compiler fails.

2018-05-23 14:00:40.5317|ERROR|FileLogger|Failed to create event viewer watcher: System.Diagnostics.Eventing.Reader.EventLogException: The specified query is invalid
at System.Diagnostics.Eventing.Reader.EventLogException.Throw(Int32 errorCode)
at System.Diagnostics.Eventing.Reader.NativeWrapper.EvtSubscribe(EventLogHandle session, SafeWaitHandle signalEvent, String path, String query, EventLogHandle bookmark, IntPtr context, IntPtr callback, Int32 flags)
at System.Diagnostics.Eventing.Reader.EventLogWatcher.StartSubscribing()
at IPBan.IPBanService.SetupEventLogWatcher() in C:\Users\Jeff\Documents\GitHub\Windows-IP-Ban-Service\IPBanService.cs:line 554

 

 

RvdH
Guest
RvdH

To filter out UDP packets as well as TCP packets i needed to adjust the regex like shown below, Microsoft-Windows-RemoteDesktopServices-RdpCoreTS/Operational

<!–
<Regex>
<![CDATA[
(?<ipaddress>.*?):[0-9]+
]]>
</Regex>
–>
<Regex>
<![CDATA[
\[?(?<ipaddress>.*?)\]?\:\d+
]]>
</Regex>

lockie
Guest
lockie

hello, i ran the application and it’s giving me

2018-05-23 05:23:14.9175|INFO|FileLogger|Started IPBan service
2018-05-23 05:23:15.1395|ERROR|FileLogger|Failed to create event viewer watcher:
System.Diagnostics.Eventing.Reader.EventLogNotFoundException: The specified cha
nnel could not be found. Check channel configuration
at System.Diagnostics.Eventing.Reader.EventLogException.Throw(Int32 errorCode
)
at System.Diagnostics.Eventing.Reader.NativeWrapper.EvtSubscribe(EventLogHand
le session, SafeWaitHandle signalEvent, String path, String query, EventLogHandl
e bookmark, IntPtr context, IntPtr callback, Int32 flags)
at System.Diagnostics.Eventing.Reader.EventLogWatcher.StartSubscribing()
at IPBan.IPBanService.SetupEventLogWatcher() in C:\Users\Jeff\Documents\GitHu
b\Windows-IP-Ban-Service\IPBanService.cs:line 550
2018-05-23 05:23:15.1555|INFO|FileLogger|Whitelist: 127.0.0.1,::1,192.168.1.251,
0.0.0.0,-, Whitelist Regex:
2018-05-23 05:23:15.1665|INFO|FileLogger|Blacklist: , Blacklist Regex:
Press ENTER to quit

Jaymer
Guest
Jaymer

I had to modify the config file in 2 places to look for this provider since I’m using MS SQL Express

<XPath>//Provider[@Name=’MSSQL$SQL1′]</XPath>

(SQL1 is my instance name)

Work great – blocking tons of those ba$terds

thx – will donate

jaymer…

Dale
Guest
Dale

hi I have just downloaded ipban from git hub and then started to read the readme file and do not see a ipban.exe file like the directions say I have the files that I got from the download link at the top of the page but the files seem to be a few years behind. I see the readme file was updated 12 days ago but it really doesn’t give a clear walk threw to install a functional working ipban and do I need the ipban.exe or has that been fazed out now?

Thanks Dale

Michael
Guest
Michael

Your zipped binary seems a couple years behind your github source???

Robert
Guest
Robert

A question concerning the IPBAN.exe.config file.

The following section is commented out. Should this section be enabled? From the description it is not clear what it does “dropped packet failures from firewall drops to Windows”. What does this do and should it be enabled?

<!– This group will block audit dropped packet failures from firewall drops to Windows
<Group>
<Keywords>0x8010000000000001</Keywords>
<Path>Security</Path>
<Expressions>
<Expression>
<XPath>//EventID</XPath>
<Regex>^(4625|5152)$</Regex>
</Expression>
<Expression>
<XPath>//Data[@Name=’SourceAddress’]</XPath>
<Regex>
<![CDATA[
(?<ipaddress>.+)
]]>
</Regex>
</Expression>
</Expressions>
</Group>
–>

IPBAN is most excellent.

Peter
Guest
Peter

Wonderful little piece of software. I got rid of the occasional attempts to login on my server, But I am curious if it’s possible to have IPBan block another kind of intrusionattempt.
I’m getting some Event 56, TermDD
“The Terminal Server security layer detected an error in the protocol stream and has disconnected the client. Client IP: x.x.x.x.”

Would it be possible to get the IP out from the EventData from those events?
the only data under EventData in the .xml is ”
\Device\Termdd
x.x.x.x
So I’m not sure how to modify the config file to read the IP out and put into the blocklist.

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David
Guest
David

IPBan does not seem to be seeing and blacklisting events such as this:

Login failed for user ‘sa’. Reason: Password did not match that for the login provided. [CLIENT: (IPv4 address)]

Windows 2012, SQL 2014

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Alex
Guest
Alex

Is it possible that the RegExp samples in the configfile are a bit off ?

I had bad results with

add key=”WhitelistRegex” value=”^(192\.168\.*)$”

like mentioned in the sample. It still locked out local users from 192.168.x.x

http://regexstorm.net/tester led me to:

add key=”WhitelistRegex” value=”^(192\.168\..*)$”

and https://regex101.com/ even explained the difference.

 

Scott Demaret
Guest
Scott Demaret

Will this work on Windows 12 server, I have been using ts_block but it does not work on Win12, I think becuase the IP is not listed in the event .

thanks

Aim2xl
Guest
Aim2xl

Hi Jeff. Nice piece of work with IPBAN.  I’ve been using it on my home web server for three weeks now and it works perfectly.
One log issue I need a heads up on to track down is this, if you can point me in the right direction that would be great. Thanks again
2016-05-13 11:06:19.9093|ERROR|FileLogger|System.NullReferenceException: Object reference not set to an instance of an object.
at IPBan.IPBanService.EventRecordWritten(Object sender, EventRecordWrittenEventArgs e) in C:\Users\Jeff\Desktop\Personal\DigitalRuby\DEV\Code\Utilities\IPBan\IPBanService.cs:line 377