PfBlockerNG v2.0 w/DNSBL

RonpfS · Aug 3, 2016, 11:31 PM

@Gé:

Sadely no success.
Still the same problem :(

It looks like you are on a x64 system … so it maybe related to something else.

Gerard64 · Aug 3, 2016, 11:42 PM

@RonpfS:

Did you read your messages ?

Sorry didn´t saw you pm me.
Gonna do that now what you suggested in the pm.
Thanks man, you´re awesome!

Qinn · Aug 4, 2016, 6:17 AM

@RonpfS:

@haleakalas:

@RonpfS:

Here is a fix for the MaxMind errors https://forum.pfsense.org/index.php?topic=116307.msg644910#msg644910
please use that thread for this issue

Solving the problem by throwing more memory at it worries me a bit. I hate to sound old-school, but 1GB or RAM on a router/firewall is a lot of memory. Allocating upwards of 300MB for one particular function, if that is on exclusive basis, would worry me that the implementation of that function is less than optimal.

As for the installation issue, it is still there. I can no longer install the latest version of pfBlockerNG; although pfSense claims that it's installed it doesn't show anywhere in the menus.

We are just trying to get a fix until BBcan177 can find a proper fix when he comes back.

there is a thread for the installation failure https://forum.pfsense.org/index.php?topic=115966.0

pfBlockerNG with DNSBL requires load of memory as it handle 1M+ table. So 1GB is really not that much memory for this kind or usage.

Thanks @RonpfS setting the memory_limit on line 236 to 300M fixed it. :)

php /usr/local/www/pfblockerng/pfblockerng.php dc

Country code update Start [ 08/04/16 8:02:02 ]
Converting MaxMind Country databases for pfBlockerNG.
Processing ISO IPv4 Continent/Country Data
Processing ISO IPv6 Continent/Country Data
Creating pfBlockerNG Continent XML files
IPv4 Africa
IPv6 Africa
IPv4 Antarctica
IPv6 Antarctica
IPv4 Asia
IPv6 Asia
IPv4 Europe
IPv6 Europe
IPv4 North America
IPv6 North America
IPv4 Oceania
IPv6 Oceania
IPv4 South America
IPv6 South America
IPv4 Proxy and Satellite
IPv6 Proxy and Satellite
IPv4 TOP 20
IPv6 TOP 20
Saving pfBlockerNG Reputation TAB
Country Code Update Ended - [ 08/04/16 8.10:13 ]

wiz561 · Aug 4, 2016, 12:42 PM

@wiz561:

@RonpfS:

@wiz561:

Thanks for the response. Are you saying that I should change the…

Firewall Maximum Table Entries: 2000000

to

Firewall Maximum Table Entries: 4000000

I just wanted to make sure I'm changing the right thing.

This looks like it ;)
Firewall Maximum Table Entries : Maximum number of table entries for systems such as aliases, sshlockout, snort, etc, combined.

@wiz561:

Also, when the cron jobs were running, I saw something with some large numbers of maybe the 200000 and I was at something like 150000… Sorry I didn't make note of it.

Thanks!

You can review the log file by going to the Firewall/pfBlockerNG/Log Browser tab

Thanks. I saw that 20000 number get changed to 40000-something so I think it's working. Hopefully this will fix it!

I've been having some issues lately so I'm hoping that maybe this clears up some of the problems. I think it's snort related, as the problems ceased when I stopped snort for a few days.

Hi! I've been having another strange problem. I modified that parameter to the 40000-something the other day and rebooted pfsense. It's been running OK now for maybe 3 or 4 days and this-morning, I am receiving the same message and a crash report…

					Crash report begins.  Anonymous machine information:

amd64
10.3-RELEASE-p5
FreeBSD 10.3-RELEASE-p5 #0 7307492(RELENG_2_3_2): Tue Jul 19 13:29:35 CDT 2016     root@ce23-amd64-builder:/builder/pfsense-232/tmp/obj/builder/pfsense-232/tmp/FreeBSD-src/sys/pfSense

Crash report details:

PHP Errors:
[04-Aug-2016 00:18:40 America/Chicago] PHP Fatal error:  Allowed memory size of 402653184 bytes exhausted (tried to allocate 72 bytes) in /usr/local/pkg/pfblockerng/pfblockerng.inc on line 3868
[04-Aug-2016 00:18:40 America/Chicago] PHP Stack trace:
[04-Aug-2016 00:18:40 America/Chicago] PHP   1\. {main}() /etc/rc.start_packages:0
[04-Aug-2016 00:18:40 America/Chicago] PHP   2\. sync_package() /etc/rc.start_packages:90
[04-Aug-2016 00:18:40 America/Chicago] PHP   3\. eval() /etc/inc/pkg-utils.inc:631
[04-Aug-2016 00:18:40 America/Chicago] PHP   4\. sync_package_pfblockerng() /etc/inc/pkg-utils.inc(631) : eval()'d code:3
[04-Aug-2016 00:18:40 America/Chicago] PHP   5\. array_merge() /usr/local/pkg/pfblockerng/pfblockerng.inc:3868

Filename: /var/crash/minfree
2048

On the dashboard, I have "49% of 2gb" for the memory and 0% swap used.

I'm wondering if my pfsense install is borked because it's been running kind of slow and php-fpm has about 90% utilization when browsing the web interface after an upgrade.

wiz561 · Aug 4, 2016, 1:14 PM

I'm actually going to move over to the memory posting in this forum since it sounds like there's others with similar issues…

Aug 4, 2016, 1:31 PM

I'm giving another go.

My pfBlockerNG installation gives me this:

Installing pfSense-pkg-pfBlockerNG…
Updating pfSense-core repository catalogue...
pfSense-core repository is up-to-date.
Updating pfSense repository catalogue...
pfSense repository is up-to-date.
All repositories are up-to-date.
Checking integrity... done (0 conflicting)
The following 6 package(s) will be affected (of 0 checked):

New packages to be INSTALLED:
pfSense-pkg-pfBlockerNG: 2.1.1_2 [pfSense]
whois: 5.1.5 [pfSense]
GeoIP: 1.6.9 [pfSense]
lighttpd: 1.4.39_1 [pfSense]
grepcidr: 2.0 [pfSense]
aggregate: 1.6_1 [pfSense]

Number of packages to be installed: 6

The process will require 2 MiB more space.
[1/6] Installing whois-5.1.5…
[1/6] Extracting whois-5.1.5: …....... done
[2/6] Installing GeoIP-1.6.9…
[2/6] Extracting GeoIP-1.6.9: …....... done
[3/6] Installing lighttpd-1.4.39_1…
[3/6] Extracting lighttpd-1.4.39_1: …....... done
[4/6] Installing grepcidr-2.0…
[4/6] Extracting grepcidr-2.0: ….. done
[5/6] Installing aggregate-1.6_1…
[5/6] Extracting aggregate-1.6_1: …. done
[6/6] Installing pfSense-pkg-pfBlockerNG-2.1.1_2…
[6/6] Extracting pfSense-pkg-pfBlockerNG-2.1.1_2: …....... done
Saving updated package information...
done.
Loading package configuration... done.
Configuring package components...
Loading package instructions...
Custom commands...
Executing custom_php_install_command()...
MaxMind GeoIP databases previously downloaded.
Adding pfBlockerNG Widget to the Dashboard... done.
Remove any existing and create link for DNSBL lighttpd executable... done.
Creating DNSBL web server start-up script... done.
Upgrading Adv. Inbound firewall rule settings ... no changes required ... done.
Custom commands completed ... done.
Executing custom_php_resync_config_command()...pkg: POST-INSTALL script failed
Message from GeoIP-1.6.9:
GeoIP does not ship with the actual data files. You must download
them yourself! Please run:

/usr/local/bin/geoipupdate.sh

Cleaning up cache... done.
Success

Yet, still nothing shows up under the Firewall menu, but I keep going with the following steps:

Diagnostics/EditFile : /usr/local/pkg/pfblockerng/pfblockerng.inc
Search for:
"pfb_global();

// DNSBL Lighttpd HTTPS ..."

Insert "ini_set('memory_limit', '300M');" on the empty line.

Save the file.

Diagnostics/CommandPrompt/Shell : php /usr/local/www/pfblockerng/pfblockerng.php dc

Let it crunch for a while, browser timeout so I can't see the result of the php command!
Wait another 10mn and relogin into pfsense. pfblockerng still not in the menu.

Reboot pfsense with hope that it will show up.

But it doesn't. Find error message in the system log file:
"rc.bootup: New alert found: There were error(s) loading the rules: /tmp/rules.debug:35: cannot define table pfB_Europe_v6: Cannot allocate memory - The line in question reads [35]: table <pfb_europe_v6>persist file "/var/db/aliastables/pfB_Europe_v6.txt"

I tried the whole thing with 500MB, still the same result.
What else to try?

Is there a way I can "force" the menu to show up pfblockerng. If I can access it I could at least turn on the package logs and get maybe more info on what's going on deep down…</pfb_europe_v6>

Aug 4, 2016, 1:58 PM

Follow up on my own earlier post.
It turns out that the php command is not executed at all, that's probably why my browser times out after a few minutes.

When I run the same command (php /usr/local/www/pfblockerng/pfblockerng.php dc) in a "php command window" (without the php part) I get the following message:
Parse error: syntax error, unexpected '/' in /tmp/V7fSSN on line 5

I reinstalled pfblockerng once again thinking that maybe i damaged something during my file edit earlier, but same things have happened.
The install seems to go through. The package doesn't show up in the menu.

If only pfsense would allow to go back to an earlier version of a package…

Mithrondil · Aug 4, 2016, 2:16 PM

Fatal error: Allowed memory size of 536870912 bytes exhausted (tried to allocate 72 bytes) in /usr/local/pkg/pfblockerng/pfblockerng.inc on line 3874 Call Stack: 0.0000 250096 1. {main}() /usr/local/www/pkg_edit.php:0 0.1150 2023904 2. eval('global $pfb; $pfb['save'] = TRUE; sync_package_pfblockerng();') /usr/local/www/pkg_edit.php:253 0.1150 2024816 3. sync_package_pfblockerng() /usr/local/www/pkg_edit.php(253) : eval()'d code:3 9.7837 279349272 4. file() /usr/local/pkg/pfblockerng/pfblockerng.inc:3874 PHP ERROR: Type: 1, File: /usr/local/pkg/pfblockerng/pfblockerng.inc, Line: 3874, Message: Allowed memory size of 536870912 bytes exhausted (tried to allocate 72 bytes)

Mithrondil · Aug 4, 2016, 2:19 PM

Seems like the code is bugged, reinstalling the package doesnt even work, the post install script fails and the pfblocker interface doesnt show up in the firewall tab.

RonpfS · Aug 4, 2016, 5:24 PM

@haleakalas:

Follow up on my own earlier post.
It turns out that the php command is not executed at all, that's probably why my browser times out after a few minutes.

When I run the same command (php /usr/local/www/pfblockerng/pfblockerng.php dc) in a "php command window" (without the php part) I get the following message:
Parse error: syntax error, unexpected '/' in /tmp/V7fSSN on line 5

I reinstalled pfblockerng once again thinking that maybe i damaged something during my file edit earlier, but same things have happened.
The install seems to go through. The package doesn't show up in the menu.

If only pfsense would allow to go back to an earlier version of a package…

Going back to an earlier will not work as the MaxMind GeoIP database changes since.
Before the db was in range format, now it is in CIDR format. BBcan177 will fix this in a week or so. In the meantime we are try to get thing going by raising the php memory limit.

Can you retry the php /usr/local/www/pfblockerng/pfblockerng.php dc command from the shell (option 8 or SSH) to see if it succeeds.
Once this works, there is no need to re-run it. The next change to the DB will in a month.

Did you read https://forum.pfsense.org/index.php?topic=116307 ? Please reply in that post for the memory issue.

RonpfS · Aug 4, 2016, 4:39 PM

@Mithrondil:

Seems like the code is bugged, reinstalling the package doesnt even work, the post install script fails and the pfblocker interface doesnt show up in the firewall tab.

Installation might fail at the MaxMind GeoIP step, the memory issue is discussed here https://forum.pfsense.org/index.php?topic=116307

Qinn · Aug 4, 2016, 6:19 PM

@haleakalas:

Follow up on my own earlier post.
It turns out that the php command is not executed at all, that's probably why my browser times out after a few minutes.

When I run the same command (php /usr/local/www/pfblockerng/pfblockerng.php dc) in a "php command window" (without the php part) I get the following message:
Parse error: syntax error, unexpected '/' in /tmp/V7fSSN on line 5

I reinstalled pfblockerng once again thinking that maybe i damaged something during my file edit earlier, but same things have happened.
The install seems to go through. The package doesn't show up in the menu.

If only pfsense would allow to go back to an earlier version of a package…

Hi did you look at RonpfS remark #26 in the thread below?

https://forum.pfsense.org/index.php?topic=116307.15

RonpfS · Aug 4, 2016, 7:04 PM

One consequence of the MaxMind GeoIP change is that IPV6 table are much bigger than before.
So if you are blocking loads of Country, you might ran out of memory processing the feeds and loading the rules.

For some users, you may have to fix the pfblockerng.inc file.
You may also have to change the Firewall Maximum Table Entries.

There is a note under GeoIP

Note: pfSense by default implicitly blocks all unsolicited inbound traffic to the WAN interface.
Therefore adding GeoIP based firewall rules to the WAN will not provide any benefit, unless there are open WAN ports.

It's also not recommended to block the 'world', instead consider rules to 'Permit' traffic from selected Countries only.
Also consider protecting just the specific open WAN ports and it's just as important to protect the outbound LAN traffic.

Some users change from blocking the "World" to allowing specific countries and that fixes the memory issues.

You can read the following topic Taming the beasts… aka suricata blueprint. It explain the concept of setting up a Firewall. Some information is outdated, but the concepts are still actual.

Aug 4, 2016, 7:14 PM

@Qinn:

@haleakalas:

Follow up on my own earlier post.
It turns out that the php command is not executed at all, that's probably why my browser times out after a few minutes.

When I run the same command (php /usr/local/www/pfblockerng/pfblockerng.php dc) in a "php command window" (without the php part) I get the following message:
Parse error: syntax error, unexpected '/' in /tmp/V7fSSN on line 5

I reinstalled pfblockerng once again thinking that maybe i damaged something during my file edit earlier, but same things have happened.
The install seems to go through. The package doesn't show up in the menu.

If only pfsense would allow to go back to an earlier version of a package…

Hi did you look at RonpfS remark #26 in the thread below?

https://forum.pfsense.org/index.php?topic=116307.15

I did but it wasn't the problem or the solution in my case. What I did finally to make it work was:

I reinstalled the package manager of pfsense using a remote ssh access. Several attempts to run it through the GUI Command Prompt miserably failed with a variety or error messages. Literally every time with a different message (real twilight zone…)
I reinstalled pfBlockerNG again. It showed up on the Firewall menu.
I forced a cron update - everything went ok and the package is up and running.
So, finally I did not increase the memory allocation to 300MB or more.

Clearly, I don't quite understand why what has been working well for over a month suddenly started to fail. Neither do I understand why reinstalling pfBlockerNG made it disappear from the Firewall Menu and from there everything fell apart.

The only thing I can tell for sure is that this system was left alone and in good working condition for over a month. No update or upgrade was necessary nor any such action was initiated by admin.
I am quite concerned now that pfSense is actually running internal updates without confirmation by admin, because the package manager was not broken. And I do not buy the idea that an ill behaving package caused the failure of the package manager as it was suggested elsewhere in the forums.

That said, I fail to understand why pfBlockerNG needs to go into an hourly update spree! I changed it to a daily update.

RonpfS · Aug 4, 2016, 7:21 PM

There is an issue with the pkg manager that is fixed and will be made availabe at some point
https://redmine.pfsense.org/issues/6665

Aug 4, 2016, 8:20 PM

@RonpfS:

@haleakalas:

Follow up on my own earlier post.
It turns out that the php command is not executed at all, that's probably why my browser times out after a few minutes.

When I run the same command (php /usr/local/www/pfblockerng/pfblockerng.php dc) in a "php command window" (without the php part) I get the following message:
Parse error: syntax error, unexpected '/' in /tmp/V7fSSN on line 5

I reinstalled pfblockerng once again thinking that maybe i damaged something during my file edit earlier, but same things have happened.
The install seems to go through. The package doesn't show up in the menu.

If only pfsense would allow to go back to an earlier version of a package…

Going back to an earlier will not work as the MaxMind GeoIP database changes since.
Before the db was in range format, now it is in CIDR format. BBcan177 will fix this in a week or so. In the meantime we are try to get thing going by raising the php memory limit.

Can you retry the php /usr/local/www/pfblockerng/pfblockerng.php dc command from the shell (option 8 or SSH) to see if it succeeds.
Once this works, there is no need to re-run it. The next change to the DB will in a month.

Did you read https://forum.pfsense.org/index.php?topic=116307 ? Please reply in that post for the memory issue.

Ron, I was able to fix my system per the actions in my reply to Qinn. So, everything is well now except for the many hours wasted time.
But since you diligently intervened in this saga a short summary about the sequence of events in my case.

pfSense was upgraded to 2.3.2 the day after it was released. The packages were upgraded in the vacuum. I don't recall ever doing a pfBlockerNG specific package upgrade.
After the upgrade my system has been running flawlessly for many days.
Couple of days ago, out of the blue I got error messages pointing at pfBlockerNG running out of memory with the 128MB limit thing.
Prior to consulting the forums, I attempted to reinstall pfBlockerNG thinking that a fresh install would solve the problem with the most up to date code and tables etc. Huge mistake!, pfBlockerNG disappears from the radar or the Firewall menu, although every installation attempt results in "Success". (The coders should maybe check their understanding about what success is…)
During that time all the advice about editing the php config file and increasing the memory limit to 300MB or more was futile at least in my case. Further, I doubt that the php command actually worked on a broken or semi broken pfBlockerNG (I mean when pfBlocker is in such a state that it doesn't show up in the Firewall menu)
Glancing through other threads I suspected that my system's problem was about a broken package installer. Unfortunately attempts to reinstall it through the GUI did not work either. Eventually remote ssh allowed for a clean reinstall.
Then GUI based reinstall of pfBlocker and forced cron table updates to verify that all was well.
But then, what was that memory limit thing that never showed up again. Btw, my system uses only 600,000 of the 2,000,000 firewall table entries. So that whole discussion was also irrelevant in my system's case.

Final thought: It would be truly fantastic if pfsense implemented a button called "Leave My System Alone" so that the admin could freeze a well behaving system in that shape and form. No structural changes of internal tables, no new code, no updates, nothing - not even virus table updates nor country code table updates.

RonpfS · Aug 5, 2016, 12:42 AM

Well things change over time. IP changes so we need to keep updating, MaxMind changed the format, then pfBlockerNG had to adapt.
At the same time pfsense changes. So things can break from time to time.

Keep in mind that Open Source projects like pfsense are developed by people on their free time. So time and resources are limited.

In the case of pfBlockerNG 2.1, there was a dozen users without issue till this month's MaxMind update. Users ranged from 1gb to 16gb (32-64bit) boxes.

Even then, in a few hours, BBcan177 (traveling) was finding solutions while busting his data plan :o.

Qinn · Aug 5, 2016, 3:05 PM

@haleakalas good that you solved it. On the part of the "leave this system alone" part I cannot agree, security requires maintenance. That's why I prefer open source software, because:

1. It's open.
2. It's maintained (thumbs up to everyone here!!!)

The problem IMHO with (commercial) software development is that you never get the chance to do it right, things like cleaning up code, education etc. cost money and thus are not allowed or have a limited lifespan, which invokes insecure systems. That's why I never ever used an router/WiFi provided by the ISP, but millions do and I think that they contribute highly to the Internets instability, but that's just my two cents ;)

PF64 · Aug 6, 2016, 1:13 AM

@f34rinc:

@PF64:

I have a huge issue with the last update as well. It eats memory like a banshee in a matter of minutes!

Are you using the new DNSBL TLD feature?

I believe I had that turned on, I can't check now because after trying to re-install the package it doesn't show on the menu anymore even though it installs successfully. Apparently there is bad code in this update since it went from working fine to a lot of issues. I'd think 16Gb of RAM is more than enough.

RonpfS · Aug 6, 2016, 2:37 AM

The is an issue with MaxMind GeoIP mostly on i386 https://forum.pfsense.org/index.php?topic=116307

There is also an issue with the pkg manager.

What do you see in pfblockerng.log system.log, what does the installation log looks like ?