Taming the beasts… aka suricata blueprint
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My cron job is throwing errors.
Since manually running "/usr/bin/nice -n20 /home/badips/pfiprep >> /home/badips/download.log 2>&1" gives me an error "Ambiguous output redirect." .
Leaving out the log output redirect it works fine. (aka >> … or > ...) So I could just remove the log output, but I'd rather keep it. :)For the rest, perfect.
I edited the main script to leave out some lists, and also moved to using the main IR_ lists.
Also great work on the widget. -
My cron job is throwing errors.
Since manually running "/usr/bin/nice -n20 /home/badips/pfiprep >> /home/badips/download.log 2>&1" gives me an error "Ambiguous output redirect." .
Leaving out the log output redirect it works fine. (aka >> … or > ...) So I could just remove the log output, but I'd rather keep it. :)for the cron job "/usr/bin/nice -n20 /home/badips/pfiprep >> /home/badips/download.log 2>&1" works for me, but if i run it via directly from the shell, I get the same error you're seeing
running from the shell, i type "/usr/bin/nice -n20 /home/badips/pfiprep >> /home/badips/download.log" instead
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Hmm, I'll just let the cron job do its job and see if it throws an error then.
Thx for that. -
Hi Foetus,
Welcome Aboard!
Be careful not to run the command from the shell when Cron is scheduled to run or there may be some unexpected behavior. I added some code to avoid having them collide but just be aware to only run the [ [b]./iprep ] command when CRON is not scheduled to run or is still in process.
You can just run [ [b]./pfiprep ] from the shell and scroll up to see the output. You can also look at the "Daily.log" which shows a summary of the Downloads. Look out for any "FAIL" downloads.
The High Level function of the script:
Download Individual List
Extract IPs
Save copy to /orig Folder
Check for Ranges that have 255 IPs and mark a single /24 Range
Process /24 (Which looks for repeat Offenders in a /24 Range) (max variable) Individual Blocklist Only.
Duplication CheckOnce all of the Downloads are completed that were scheduled to run:
The Following is performed Globally on ALL Lists, except for the ones that were marked as "p24=no" on the Collect Line.
p-Deduplication - Looks for Repeat Offenders that are over the pmax variable regardless of Country Code.
d-DeDuplication - Looks for Repeat Offenders that are over the dmax variable but uses the Country Code Whitelist function.
If the Sanity Checks passes, it will create the TIER (Group) lists and perform the "pfctl" commands to update the pfSense Alias Tables.
If you decide to remove a list, you need to add "remove" after the collect line. When the script runs at its next scheduled run, it will remove the list from the database properly. Don't try to do this manually.
If you follow the High level steps, when you use the p24 process in d-deduplicaton, it will look for a repeat range of malicious IPs and find all of the Blocklists that have this IP listed.
The FIRST blocklists get a single x.x.x.0/24 Block and all of the other Lists that have the range are deleted.
So if a List is removed, and it happens to be a list that had the p24 process and was the first list processed as above, then you have no Blocklists for that range. This will correct itself on when the Lists are re-downloaded but that could be 1-4hrs depending on when the Lists are scheduled to run.
To get back into Sync, you can run this function:
[ [b]./pfiprep killdb ]
Which will wipe the Database (Settings are not touched) and it will resync the database.
Out of Curiosity, which Lists did you disable?
Another Function is to use the "IR_Match" Alias in the Floating Rules as a "Match" Rule. This will show you activity for the IP Ranges that passed the Country Code Whitelist process. Because its a "Match" rule, it will not block, but just log the activity.
Since I have been running the script, I have not found too many False Positives, but I always recommend not to disable a list but to create a "SAFE Alias" Rule that is defined above the "Block/Reject" Rules. And just add the IPs that you want to allow.
The Patch for diag_dns.php will also work when looking at the Snort/Suricata Alert Logs.
If you are running Snort/Suricata, when you click on the "!" ICON to Resolve an IP, you will find that most of the IPs are already listed in the BlockLists. You will also see over time that it will pickup an Alert for an IP but the Blocklists do not have the specific IP but there are several IPs within the same Range that are being Blocked.
Also in diag_dns.php, there are several IP Reputation Links that can help you determine the Reputation of any Blocked IP before you remove a list, or Add an IP to the SAFE Alias list.
Let me know if you need any clarification or any other help.
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The 2>&1 at the end means don't bother emailing me everytime you run this job. It doesn't make any sense running that from the console, since the system wasn't intending to email you anyway.
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Awesome post, thanks!
I'm trying to install pfiprep, and am getting an error when installing one of the dependencies.
$ pkg_add -r grepcidr tar: Failed to set default localeCan someone please tell me what to do to fix this?
Dont run the command from Diagnostics -> Command.
Run it from SSH console (shell) or direct console (shell) and it should work. -
I have added a "PATCH" to make the necessary changes to the pfBlocker Widget so that you don't need to modify that file from the shell.
If you don't have the pfSense Package "System Patches", it is available in the pfSense System:Packages list under "System Patches"
Click the "+" Icon to add a new Patch
Enter a Description (pfBlocker Widget Patch)
In the Patch Contents Dialog Box - Copy/Paste from my Gist the contents of this
link below:[ [b]https://gist.github.com/BBcan17/67e8c456cb399fbe02ee#file-pfblocker-widget-php_patch ]
Keep the other default settings as is.
Click "Test" and confirm that it can be applied Successfully. Then click "Apply"
In my Gist, is also a "Patch" to Include the pf IP Reputation Blocklists in the "Firewall Logs "!" Lookup functions.
[ [b]https://gist.github.com/BBcan17/67e8c456cb399fbe02ee#file-diag_dns-php_patch ]
UPDATE:
When Applying a Patch, the File that you want to modify has to be an original pfSense Version for the Patch to be applied successfully.
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Out of Curiosity, which Lists did you disable?
Anything related to Spamhaus. Reason is simple, location where my current test setup is already has this filtered on a higher up level. No point doing the same twice :)
I was already using a white-list for my classic pfblocker lists, so that will just be extended (which wont be allot since most anti-spam lists are disabled by default). Its not the reason for disabling them :).On production networks I'm pretty much gonna use the defaults since most people here and a couple of fellow testers in my area are confirming a low false positives rate.
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Out of Curiosity, which Lists did you disable?
Anything related to Spamhaus. Reason is simple, location where my current test setup is already has this filtered on a higher up level. No point doing the same twice :)
I was already using a white-list for my classic pfblocker lists, so that will just be extended (which wont be allot since most anti-spam lists are disabled by default). Its not the reason for disabling them :).On production networks I'm pretty much gonna use the defaults since most people here and a couple of fellow testers in my area are confirming a low false positives rate.
The Spamhaus drop and edrop are also included in the ET Lists, but there are still times where one list hasn't sync'd with the others and there are Gaps. I always like to go to the source of the Lists and use those. IBlock has a lot of references to other lists but they just re-package them.
Its not a lot of extra IPs and I would consider adding them just in case there is any issues from Higher Ups syncing at different times. The Daily Log does help to see how often Lists are updating by looking at the "Count"
Emerging Threats fwip rules.
Raw IPs for the firewall block lists. These come from:
C&C servers identified by Shadowserver (www.shadowserver.org)
Spam nes identified by Spamhaus (www.spamhaus.org)
Top Attackers listed by DShield (www.dshield.org)
More information available at www.emergingthreats.net
Please submit any feedback or ideas to emerging@emergingthreats.net or the emerging-sigs mailing li
Spamhaus also has a Botnet Command and Control List, that is Free but it is not readily available. You need to request access to that for your Downloading IP address and use RSYNC. The code to do that is included in the script. I have been working them, to see if they will just release it like the drop and edrop so it makes it easier.
Its also nice to see that Grepcidr was partially funded by Spamhaus also.
http://www.spamhaus.org/news/article/714/new-ipv6-cidr-searching-tools-released-grepcidrs
I have also been working on Integrating the Script to use the New Emerging Threats IQRISK IP Rep lists. Its currently being beta tested by CINO. Unfortunately they want approx $1400 a year per license for it… :o :o But If you are a business, I would recommend that over BS locally install Virus Detection Software. I know that Bill has also been trying to get them to reduce the price for "Home Use"!
I am also trying to get access to "ShadowServers" Lists, but they are taking forever to approve.
http://www.shadowserver.org/ccfull.php
http://www.shadowserver.org/ccdns.phpIf you guys find any bugs in the code or have some "Alternative" Methods to find Offending IPs, I am always open to see if I can make the Script better/more efficient.
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I have added a "PATCH" to make the necessary changes to the pfBlocker Widget so that you don't need to modify that file from the shell.
If you don't have the pfSense Package "System Patches", it is available in the pfSense System:Packages list under "System Patches"
Click the "+" Icon to add a new Patch
Enter a Description (pfBlocker Widget Patch)
In the Patch Contents Dialog Box - Copy/Paste from my Gist the contents of this
link below:[ [b]https://gist.github.com/BBcan17/67e8c456cb399fbe02ee#file-pfblocker-widget-php_patch ]
Keep the other default settings as is.
Click "Test" and confirm that it can be applied Successfully. Then click "Apply"
In my Gist, is also a "Patch" to Include the pf IP Reputation Blocklists in the "Firewall Logs "!" Lookup functions.
[ [b]https://gist.github.com/BBcan17/67e8c456cb399fbe02ee#file-diag_dns-php_patch ]
Cino has found a small bug in one of the patches.
For the pfBlocker Widget, you will need to click on "Revert" back to previous version.
Edit the patch and copy/paste the new code from my Gist.
Than "Save", "Test", and "Apply"
If you don't Have pfBlocker Installed, you could download the pfIPreputation.widget.php and save that in /usr/local/www/widgets/widgets
And adding it to the Status:Dashboard page with the "+" icon.
NOTE: For [ [b] diag_dns.php ] Don't forget to change the path to the /pf folder
from the Patch - /YOUR/BLOCKLIST/FOLDER/*
Example /home/USER/pf/*UPDATE:
If you are having issues applying the patches, it could be due to copy/paste issues.
You can also use the "URL/Commit ID" in the Patch Edit Menu, and use these Links for each of the patches.
https://gist.githubusercontent.com/BBcan17/67e8c456cb399fbe02ee/raw/f3ca0e1d3dd4a07a21796d033dad06a4ce1cc218/diag_dns.php_PATCH
(Once you "fetch" the patch, you will need to manually edit the path to the [ /pf folder ]
example [ /home/USER/pf/* ], then click "Test" and then "Apply". Do not paste any code into the "patch contents" the url will do that.UPDATE2:
When Applying a Patch, the File that you want to modify has to be an original pfSense Version for the Patch to be applied successfully.
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and a day later both bing and google are blocked ;D
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How are they blocked? Lists or suricata?
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If you use the MTA list it's blocking those sites.
That is a malware analysis website and if you take a look at their website you will see how they report their work. Unfortunately Google dns 8.8.8.8 was involved in malware (believe it or not lol)
Add those IPs to a pass list above the Block Rules.
If you added the Diag_dns.php patch, you will see which blacklist is blocking what.
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yea, having issues applying the patch. does not seem to be reading out my lists. out of time today, whitelists ftw.
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yea, having issues applying the patch. does not seem to be reading out my lists. out of time today, whitelists ftw.
You need to edit the path in the patch to point to your pf folder.
In pfiprep is a pfdir= path
Make sure the patch has the correct path. If you make changes, you need to revert, make the changes and then re-apply.
If you are still having difficulties with it, send me a PM.
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I cried to quickly. Clean reboot and re-applied. Working as intended :)
And exactly : MTA.txtOnce again nice job with that script. This will really help out.
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I cried to quickly. Clean reboot and re-applied. Working as intended :)
And exactly : MTA.txtOnce again nice job with that script. This will really help out.
I cried sometimes while writing the script!!! ;D
Thanks for the feedback. Really appreciate it. If your using Snort/Suricata, the updated diag_dns.php will also help when you click on the "!" Icon to resolv the Alerted IPs.
I would say that over 90% of the alerts in Snort/Suricata are already being blocked by the Blocklists.
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hey guys, thanks to everyone for the work here in developing the code, scripts and instructions in this thread.
Can I check some newb stuff. When I create my aliases, I like to verify they appear right by mouseovering in the Firewall:Rules page, a drop down appears which shows the loaded data sets.
I noticed all my Alias were 2998 lines long which seemed odd as file sizes and data when scripts were running suggested they were larger than this. I checked one script by loading it in via a pfBlocker list and it shows as much larger (142k entries)….Can I check that the Firewall->Alias was of creating aliases doesn't truncate the data set and its just the display thats limited.
Sorry if this is a dumb question - some of this is hard to get your head round first timers.
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Hi irj972,
If you run this command:
[ [b]tail -200 download.log ]
It will show the last 200 lines of the download.log
You will see a section that looks something like this:
Alias Table IP Counts (w/o 1.1.1.1)
–---------------------------
281343 total
145545 /usr/local/www/aliastables/IR_SEC3
51863 /usr/local/www/aliastables/IR_IB
30389 /usr/local/www/aliastables/IR_PRI1
27565 /usr/local/www/aliastables/IR_PRI2
23143 /usr/local/www/aliastables/IR_SEC1
2351 /usr/local/www/aliastables/IR_TOR
391 /usr/local/www/aliastables/IR_SEC2
57 /usr/local/www/aliastables/android
39 /usr/local/www/aliastables/ponmocupForget about the bottom two. But the counts in your list should match what you see in the pfSense Rules Count and/or the widget.
The alias should be in this format:
[ https://127.0.0.1:[port]/aliastables/IR_PRI1 ]
You can also check to see that the alias tables in pfSense are Large enough:
pfSense Table Stats
–-----------------
table-entries hard limit 12000000
Table Usage Count 316805You can edit the tables size in Advanced:Firewall/NAT:Firewall Max Table Entries
One thing that is odd, is that you have "IR_SEC3" listed in the pfIP_Reputation Window below? Can you explain what that window represents?
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I don't know why, its not likely right but my download.log is zero bytes…..
I just re-ran the script and it shows the following...Alias Table IP Counts (w/o 1.1.1.1) ----------------------------- 256918 total 142929 /usr/local/www/aliastables/IR_SEC3 51854 /usr/local/www/aliastables/IR_IB 28441 /usr/local/www/aliastables/IR_PRI2 24370 /usr/local/www/aliastables/IR_SEC1 4994 /usr/local/www/aliastables/IR_TOR 3811 /usr/local/www/aliastables/IR_PRI1 519 /usr/local/www/aliastables/IR_SEC2 Alias Table (Match) IP Counts ----------------------------- 21218 /usr/local/www/aliastables/IR_Match pfSense Table Stats ------------------- table-entries hard limit 10000000 Table Usage Count 897695I can confirm all lists over 2998 entries (i.e everything other than IR_SEC2) appear to be "capped".
The IR_SEC3 thing is just a comment where i created the alias.
