PfBlockerNG v2.0 w/DNSBL

gcu_greyarea

You could Configure your DHCP server and specify the DNS option as external DNS server e.g. Google DNS.
For the small number if hosts you need to filter create a static DHCP Mapping(Reservation) and specify the unbound DNS server on the LAN Address.
Create an IP alias for these hosts and create a firewall rule to stop them acciessing any other DNS servers.

Obviously this creates a problem when all hosts must use the unbound resolver.

Other options would be - running a few virtual instances of pfSense -each with their own DnS resolver and DNSBLs. Then specify custom DNS servers via DHCP mappings.

xbipin

we currently block external DNS access from LAN and force every1 to use unbound and i guess unbound config doesnt mention any option to filter dns per host or probably run multiple instances of it which would seem like a more easier option without the complexities do multiple other things for same effect.

cyber roam i guess does this dns filtering per host so curious on how do they achieve it as many other ppl in my region use that just for the purpose of blocking certain domains per host

BBcan177

There is no option in The Unbound Resolver to "Filter by host"…. So if you want to bypass DNSBL for some hosts... You need to define a different DNS server for those LAN devices....

xbipin

@BBcan177:

There is no option in The Unbound Resolver to "Filter by host"…. So if you want to bypass DNSBL for some hosts... You need to define a different DNS server for those LAN devices....

thanks for the info, is there any such feature request at unbound side or probably any plans to add it in the future?

pfBasic

I just ran into an issue and wanted to put it out here.

I run Private Internet Access as a VPN for one of my interfaces, I also use their DNS's.

I guess it's not really too surprising that this happened but my internet went down due to DNS and it was because the PIA DNS were being blocked by one of my pfBlockerNG lists, specifically "http://www.stopforumspam.com/downloads/bannedips.zip".

Anyways I know I'm not the only person who uses PIA DNS so I thought I'd put it out on here.

BBcan177

@pfBasic:

I just ran into an issue and wanted to put it out here.

I run Private Internet Access as a VPN for one of my interfaces, I also use their DNS's.

I guess it's not really too surprising that this happened but my internet went down due to DNS and it was because the PIA DNS were being blocked by one of my pfBlockerNG lists, specifically "http://www.stopforumspam.com/downloads/bannedips.zip".

Anyways I know I'm not the only person who uses PIA DNS so I thought I'd put it out on here.

Best to submit this to Stop Forum Spam.

hulleyrob

Is anyone else seeing this lately after a cron?

There were error(s) loading the rules: pfctl: DIOCXCOMMIT: Device busy - The line in question reads [0]:

Has only started happening in the last few weeks.

Some googling suggested setting NIC speed manually from auto.

If anyone has got any other ideas please post.

Thanks

Rob

BBcan177

Looks like a bad aliastable possibly. Try a Force reload and/or a reboot.

Check the pfblockerng.log and system logs for further clues. If you hover over the Firewall rules, do you get the aliastable popup? Could also be unrelated to the package. You could temporarily disable the package and see if it re occurs.

hulleyrob

Ok thanks for that does this look ok as it is the only alias that didn't look right to me?

It only seemed to appear after i ticked de-duplication is it.

Rob

![Screen Shot 2016-11-07 at 13.19.46.jpg](/public/imported_attachments/1/Screen Shot 2016-11-07 at 13.19.46.jpg)
![Screen Shot 2016-11-07 at 13.19.46.jpg_thumb](/public/imported_attachments/1/Screen Shot 2016-11-07 at 13.19.46.jpg_thumb)

BBcan177

That is used for the IP Suppression… Its ok as is...

erwintwr

Hi guys

i am busy running a test server where i plan to simulate our current Squid+squidguard setup, but add DNSBL to it.

one think i note is that some ad's are still getting through ( comparing with AdBlock on chrome)

Is it possible to load an AdBlock list ( and from where?) , so that user experience is similar to having AdBlock extension activate?

Thx

pfBasic

It looks like I got one thing working on my setup but killed DNSBL in the process.

I recently setup policy based routing where my pass firewall rules determine the Gateway to be used. I did this so that I could have one interface route all traffic through my VPN client and another interface not utilize the VPN at all. That works great, but ever since I set that up I have 0 hits on all of my DNSBL feeds and ads are coming through.

Any ideas on how I can use pfBlockerNG DNSBL while still utilizing policy based routing for my purposes?

XmickS

My DNSBL has stopped working. When I do a Fprce Update, I get this in the log

------------------------------------------
Assembling database... completed
Validating database... completed
Reloading Unbound... Failed to Reload... Restoring previous database.... Not completed.

*** DNSBL update [ 0 ] [ 8654 ] ... OUT OF SYNC ! ***
------------------------------------------

When I execute "Shell Output - unbound-control -c /var/unbound/unbound.conf status"
I get this:

error: SSL handshake failed
34386131464:error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed:/builder/pfsense-232/tmp/FreeBSD-src/secure/lib/libssl/../../../crypto/openssl/ssl/s3_clnt.c:1191:

I've just uninstalled PfBlockerNG and after that a reboot, but it still persists. Any ideas?

laviniuc

the cron/reload/update job stalls for me. no error, just stops at dnsbl. works if i disable alexa whitelist or if i stop the dnsbl component. anyone else having this problem?

BBcan177

@laviniuc:

the cron/reload/update job stalls for me. no error, just stops at dnsbl. works if i disable alexa whitelist or if i stop the dnsbl component. anyone else having this problem?

It might be related to Alexa retiring its TOP1M feed… They have since restored the feed, but uncertain of its ultimate fate...

https://twitter.com/adamcaudill/status/800813805009768448
https://twitter.com/Alexa_Support/status/801167423726489600

I would try the following and see if it fixes this issue:

mv /var/db/pfblockerng/top-1m.csv /var/db/pfblockerng/top-1m.csv.old

Then run a "Force Reload" and see if it re-downloads the Alexa Archive and rebuilds the Alexa whitelist…

As reference, the Alexa TOP1M feed url:

https://s3.amazonaws.com/alexa-static/top-1m.csv.zip

laviniuc

@BBcan177:

@laviniuc:

the cron/reload/update job stalls for me. no error, just stops at dnsbl. works if i disable alexa whitelist or if i stop the dnsbl component. anyone else having this problem?

It might be related to Alexa retiring its TOP1M feed… They have since restored the feed, but uncertain of its ultimate fate...

https://twitter.com/adamcaudill/status/800813805009768448
https://twitter.com/Alexa_Support/status/801167423726489600

I would try the following and see if it fixes this issue:
mv /var/db/pfblockerng/top-1m.csv /var/db/pfblockerng/top-1m.csv.old
Then run a "Force Reload" and see if it re-downloads the Alexa Archive and rebuilds the Alexa whitelist…

As reference, the Alexa TOP1M feed url:
https://s3.amazonaws.com/alexa-static/top-1m.csv.zip

thanks, much obliged, it works perfectly now. i'll keep on the lookout for if they drop the feed again… maybe you could check if anything weird happens on the import code if the url can't be found? before i stopped the import / disabled dnsbl it was stalling the cpu/dns resolver (guessing weird things happened when the first import took as long as the refresh timeout and then the second import started wihtout the first one completing?)

TomT

Hi
I've just installed pfBlockerNG 2.1.1_4 on a test pfSense install.

I've enabled it and then gone to update.
I've selected the option to reload but nothing is downloaded.

Checking /var/db/aliastables there is nothing showing.
Can anyone point me in the right direction ?

 UPDATE PROCESS START [ 12/01/16 11:26:27 ]

Clearing all DNSBL Feeds... 
** DNSBL Disabled **

===[  Continent Process  ]============================================

===[  IPv4 Process  ]=================================================

===[  IPv6 Process  ]=================================================

===[  Aliastables / Rules  ]==========================================

No changes to Firewall rules, skipping Filter Reload
No Changes to Aliases, Skipping pfctl Update

 UPDATE PROCESS ENDED

Thanks

RonpfS

Did you define any tables ?

DigitalJer

Is it possible to use an alternative list, such as:

https://blog.majestic.com/development/alexa-top-1-million-sites-retired-heres-majestic-million/

BoxMacNCheese

@tonymorella:

@Atlan:

I am receiving certificate invalid errors after enabling the DNSBL when navigating certain sites - so far the culprit seems to mainly be googleads.g.doubleclick.net when trying to serve content over an HTTPS enabled website.

The attempt still shows in the Alerts tab of pfBlockerNG, the main site still loads, but it seems to be wanting to use the firewall's self signed certificate as the certificate for the ad server host.

Did I miss a setting somewhere to prevent this from happening?

Ya ran into the same problem while beta testing, completely forgot about this issue until I read your post :) For a quick fix I created a CA and web certificate via pfsense GUI then copies this cert to /var/unbound/dnsbl_cert.pem which dnsbl light http will use. Then push out the CA to all the desktops, could be done via GPO or login scripts. With https://letsencrypt.org/ picking up traction, everything is going to be running over TLS or SSL soon going to have to implement this type of fix.

**EDIT: Sorry guys did a bad job on this post and what I was doing, it does not fix the underlying issue with the TLS stream being bad because the cert is not valid, reggie14 did a much better job testing this than I. In my setup is simply helped limit the errors in Chrome. Again just a quick fix that might help. Again sorry for the confusion.

FYI the update from Chrome 45 to 46 made a difference in what come up under security warnings:
http://arstechnica.com/information-technology/2015/10/chrome-finally-kills-off-the-http-https-mixed-content-warning/**

Thanks
Tony M

I am new to pfsense and new to this forum. I do not tend to go digging up the past but was there any conclusion to the https page errors received while using DNSBL? I initially scrapped my setup of squidguard due to its failure to even pass through to HTTPS sites. Now the DNSBL is working adequately but if I am to block certain domains (such as www.yahoo.com), I receive an insecure connection error on my browser instead of the 1x1 pixel error page. Is there a way for me to get rid of this error? Or is there a way to potentially redirect this https domain being blocked to an internal webpage?

Also if this is in the wrong section or if this has already been answered I apologize in advance.