PfBlockerNG v2.0 w/DNSBL

BBcan177 · Dec 21, 2015, 3:24 PM

I have posted a Pull Request #1223:

PR has been merged. pfBlockerNG v2.0.4

captain1980 · Dec 21, 2015, 9:01 PM

I have a question of running VPN next to/ together with DNSBL.

On my laptop and Iphone/ Ipad i have client software running PIA VPN. With the VPN on nothing seem to be blocked, when switched of DNSBL is working. This is confirmed in the alerts tab and log.

Is it not possible to run VPN and DNSBL ? My understanding of the system is still limited. Hope you guys could point me in the right direction.

Greets,

HJ

BBcan177 · Dec 22, 2015, 4:41 AM

@captain1980:

Is it not possible to run VPN and DNSBL ? My understanding of the system is still limited.

I don't personally use a VPM like PIA, but the only way for DNSBL to function, is if the pfSense Resolver is used for the DNS requests. If the VPN uses a different DNS server, then DNSBL will not block any domains…

captain1980 · Dec 22, 2015, 9:23 PM

Ok thanks for the reply.

Is it possible to use another DNS then the one from the VPN server to use both systems.

When i run the VPN and DNSBL the NTp clock syc & dns resoler go "off" and then nothing works anymore.

Hj

Ramosel · Dec 24, 2015, 3:10 PM

@BBcan177:

I don't personally use a VPM like PIA, but the only way for DNSBL to function, is if the pfSense Resolver is used for the DNS requests. If the VPN uses a different DNS server, then DNSBL will not block any domains…

I think I understand the issue when running a PIA client on a device behind the pfSense system.

Does this issue exist if you use pfSense/OpenVPN system as the VPN client? If so, is the fix as simple as using PIA's DNS values in pfSense?

captain1980 · Dec 25, 2015, 9:30 AM

Using the DNS of the VPN server did not change the problem.

When i start running the Openvpn client "unbound" will stop together with the "ntp sync" internet. Running no client VPN everything runs well.

My goal is to run client VPN to PIA plus use the capabilities of pfblockerng dnsbl for ad blocking, trackers etc. In don,t want my IP to be shown.

Ramosel · Dec 25, 2015, 3:34 PM

@captain1980:

Using the DNS of the VPN server did not change the problem.

My goal is to run client VPN to PIA plus use the capabilities of pfblockerng dnsbl for ad blocking, trackers etc. In don,t want my IP to be shown.

Thanks for the information. This is the direction I'm heading too. I have a few more things to clean up before I (re)invoke my PIA connection. I'll keep an eye on your issue.

Rick

cmpufxr · Dec 25, 2015, 4:20 PM

@chadb:

I am seeing an issue where the pages with ads can take up to 20 seconds to timeout prior to loading the page…

Example: landsend.com will sit blank for 20 seconds waiting on assets.adobedtm.com, then loads immediately.

-Chad

I have been dealing with this issue also, I have found using wireshark that the VIP network request is being sent to 10.10.10.1 on port 80 (not the port that you have set) so the website waits until it times out to load the page.

A previous post mentioned that it was squid that was sending traffic to port 80. (to see the 1x1 gif you need to go to 10.10.10.1 on the port you have set.)

I have also set the VIP ip to 172.16.0.5 and the ports to 8178 and 8179 (suricata off, squid off, squidguard off) using wireshark I still see traffic going to 10.10.10.1 port 80

Also on systems that do not use the squid3 have the same delay also on windows or centos. The websites I am using to test are newegg and foxnews.

BBcan177 · Dec 25, 2015, 5:07 PM

Hi cmpufxr,

Check your desktop DNS settings, and make sure they are only pointing to the pfSense Resolver IP address. If you have a multi-segmented LAN network, make sure to add the DNSBL allow firewall rule to allow those other subnets access to the VIP address. Make sure you can ping and browse to the DNSBL VIP, without that connectivity working properly, you will see those timeouts.

Keep in mind that there are two NAT rules that forward traffic from the VIP address on ports 80/443 to the 127.0.0.1 DNSBL Port/SSL ports.

cmpufxr · Dec 25, 2015, 5:59 PM

@BBcan177:

Hi cmpufxr,

Check your desktop DNS settings, and make sure they are only pointing to the pfSense Resolver IP address. If you have a multi-segmented LAN network, make sure to add the DNSBL allow firewall rule to allow those other subnets access to the VIP address. Make sure you can ping and browse to the DNSBL VIP, without that connectivity working properly, you will see those timeouts.

Keep in mind that there are two NAT rules that forward traffic from the VIP address on ports 80/443 to the 127.0.0.1 DNSBL Port/SSL ports.

Dns settings are good, I have access to the VIP I can only browse to the VIP with 10.10.10.1:8178 and https:\10.10.10.1:8179 (vip address and port)

It looks like the NAT rule is not forwarding from 80 and 443 to 8178 and 8179.

Thanks, I have at least identified the issue, now to fix it.

I run a website so incoming port 80 on the wan is already forwarded. I also block all outgoing and have rules setup to allow 80 and 443 out on the LAN. I wonder if these are causing issues.

cmpufxr · Dec 25, 2015, 6:21 PM

Ok, I found out the reason for why some websites were slow. ( newegg cnn fox landsend )

On my system I block all incoming and outgoing traffic on lan, vlan1, vlan2

When I setup pfblockerng with dnsbl I did not add the outgoing rules on the lan interface for both the dnsbl ip's.

So in the floating rule that I already had for outgoing system ports I added both the ip's for the dnsbl web server.

so the only traffic that was going out was the 80 and 443 and when the NAT rule tried to forward this traffic to 127.0.0.1 port 8178 and 8179 (this is also outgoing traffic from lan to 127.0.0.1) so I had to add 8178 and 8179 to my LAN outgoing port rules.

before the rule I could ping 10.10.10.1 but NOT browse to the 1x1 pixel gif unles I added the port (ie 10.10.10.1:8178). After I can browse and ping to 10.10.10.1 without having to add the port

I hope this helps someone else… Thank you for all your help

Thanks BBcan177 for getting me on the right track...

chain · Dec 25, 2015, 7:13 PM

When creating the Alias are you add them into a larger group or are you leaving them as they are individual items? Is there a limitation on amount of alias you can add to a group?

@BBcan177:

Here are more DNSBL Feeds that can be used in pfBlockerNG.
(Copy and paste URLS as plain text)

Create a new alias for these.
These are not necessarily ADvert domains. So I named mine "Malicious"

hpHosts
http://hosts-file.net/download/hosts.zip

SWC
http://someonewhocares.org/hosts/hosts

spam404
https://spam404bl.com/blacklist.txt

malc0de
https://malc0de.com/bl/BOOT

MDS (use 'Flex' state)
https://mirror1.malwaredomains.com/files/justdomains

MVPS
http://winhelp2002.mvps.org/hosts.txt

MDL
http://www.malwaredomainlist.com/hostslist/hosts.txt

GJTech
http://adblock.gjtech.net/?format=unix-hosts

dShield_SD (They also have a conservative list available)
https://www.dshield.org/feeds/suspiciousdomains_High.txt

Zeus
https://zeustracker.abuse.ch/blocklist.php?download=domainblocklist

These two feeds post full URLs, so there can be some more false positives.
Create a new Alias, and use Alexa as a recommendation.

PhishTank
https://data.phishtank.com/data/online-valid.csv.bz2

OpenPhish
https://www.openphish.com/feed.txt

MPatrol (You need to register - Free or Paid subscription. Use Danguardian feed)
https://lists.malwarepatrol.net

This is a feed that I manage (as time permits)
MS_2
https://gist.githubusercontent.com/BBcan177/4a8bf37c131be4803cb2/raw

Use this in its own Alias:

BBC_DGA (This is a large feed of DGA for the likes of Cryptolocker et al…)
http://osint.bambenekconsulting.com/feeds/dga-feed.gz

BBC_C2
http://osint.bambenekconsulting.com/feeds/c2-dommasterlist.txt

Use this feed in its own alias as it is updated more frequently.
So you can update it more often than once per day.

hpHosts_partial
http://hosts-file.net/hphosts-partial.asp

If users find other feeds, please post back so that others may benefit also.
Its also important to donate to the feeds provider (IP and/or Domain) as they all need support.

chain · Dec 25, 2015, 7:16 PM

Did you create a group per each item that is shown below?

@tonymorella:

Few things I found out while beta testing V2

First rule is take your time and be patient. Adding to may rules at once will casue alot of blocks you may or may not way. Wildcards are not supported, or wanted in most cases. For example adding google.com does not filter all the hosts for the domain, need to add each host that is being blocked to the filter lists

Make sure to double check ASN's, especially for large companies that have acquired other companies, more than one ASN might exist
*** Unbound has an issue in my setup using OpenVPN connected to PIA. It does not start correctly when a network issue is sensed, em1 or openvpn interfaces flap for example. The core problem seems to be how the rc scripts handle unbound reload. They do a HUP vs reload to get around the cache being lost. Disabling "DHCP Registration" or "Static DHCP" was a workaround that allowed unbound to start correctly.

Checking "DHCP Registration" or "Static DHCP" causes other issues with unbound, this is a know issue being talked about in the DNS forum. I added all my hosts host to unbound statically as a work around

I wanted to have my allow rules > pfb block rules > my block rules > my per interface rules. Did this by enabling "Floating Rules" and using "pfb_pass/match | pfsense pass/match | pfb_block/reject"

If you have WIFI make sure to enable "DNSBL Firewall Rule" and select both LAN and WIFI or the NAT: Port Forward rule for 10.10.10.1 is not setup correctly. If you don't change this setting things still work but everything runs slow over wifi.

Make sure to whitelist all the DNSBL sites FQDN via an allow aliases, some IPv4 block-lists include the IP space the DNSBL are found in

DBSBL is basicly a man in the middle for DNS so any site that is block but running https will create warrnings. Depending on how the brower is setup it might just ignore or not display the error. CTRL+SHIFT+I on both Chrome and Firebox will bring up dev panel where you can see which pages are not loading. Chrome will show an error, Firefox will show a red slash throught the lock icon.

Noticed a list of domains in the Alexa top 1K that serve up ads, since I don't want this I added the following custom block list to my Ads DNS Group which will remove them from any DNS group that is using the Alexa top 1K filter. To confirm make sure "Enable Alexa Whitelist" is NOT checked for this DNS group.
popcash.net
www.popcash.net
cdn.popcash.net
outbrain.com
www.outbrain.com
onclickads.net
www.onclickads.net
googleadservices.com
www.googleadservices.com
adcash.com
www.adcash.com
popads.net
www.popads.net
popmyads.com
www.popmyads.com
List of domains added to DNSBL Custom Domain Suppression to stop them from being blocked
goo.gl
google.com
www.google.com
mail.google.com
docs.google.com
sites.google.com
fonts.googleapis.com
cache.google.com
clients.google.com
clients0.google.com
clients1.google.com
clients2.google.com
clients3.google.com
clients4.google.com
clients5.google.com
clients6.google.com
clients7.google.com
clients8.google.com
clients9.google.com
www.maxmind.com
s3.amazonaws.com
fls-na.amazon.com
login.live.com
redis.io
pgl.yoyo.org
someonewhocares.org
www.thingamajob.com
winhelp2002.mvps.org
hosts-file.net
www.hosts-file.net
adaway.org
sysctl.org
adblock.gjtech.net
www.dshield.org
malwaredomainlist.com
malwaredomains.com
bambenekconsulting.com
malwarepatrol.net
zeustracker.abuse.ch
malc0de.com
curl.haxx.se
dl.dropboxusercontent.com
whois.cymru.com
github.com
collector-cdn.github.com
pivotal.github.com
cloud.github.com
raw.githubusercontent.com
raw.github.com
stopforumspam.com
www.stopforumspam.com
sourceforge.net
www.sourceforge.net
iweb.dl.sourceforge.net
chase.com
www.chase.com
mint.com
www.mint.com
americanexpress.com
www.americanexpress.com
online.americanexpress.com
linuxquestions.org
www.linuxquestions.org
optimizely.com
www.optimizely.com
api.optimizely.com
cdn.optimizely.com
cdn2.optimizely.com
cdn3.optimizely.com
slashdot.org
www.slashdot.org
ebay.com
www.ebay.com
rover.ebay.com
srx.main.ebayrtm.com
openbl.org
www.openbl.org
www.us.openbl.org
delta.com
www.delta.com
aa.com
www.aa.com
cruisesonly.com
www.cruisesonly.com
ripe.net
www.ripe.net
weather.com
www.weather.com
lacnic.net
www.lacnic.net
tvrage.com
services.tvrage.com
www.tvrage.com
publicbt.com
device.maxmind.com
www.boingo.com
xda-developers.com
www.xda-developers.com
forum.xda-developers.com
opengapps.org
download.mono-project.com
Ads DNS Group

Update Frequency: Once a Day

Enable Alexa Whitelist: NOT Enabled

Add Custom Block List noted above
http://pgl.yoyo.org/adservers/serverlist.php?hostformat=hosts&mimetype=plaintextoup	yoyo
http://hosts-file.net/ad_servers.txt							hphosts_ats
https://adaway.org/hosts.txt								adaway
http://sysctl.org/cameleon/hosts							syctrl
http://adblock.gjtech.net/?format=unix-hosts						gjtech
Privacy Fraud DNS Group

Update Frequency: Once a Day

Enable Alexa Whitelist: Enabled
https://s3.amazonaws.com/lists.disconnect.me/simple_tracking.txt			disconnect_basic
http://hosts-file.net/fsa.txt								hphost_fsa
http://hosts-file.net/hjk.txt								hphost_hjk
http://hosts-file.net/pha.txt								hphost_psh
https://www.dshield.org/feeds/suspiciousdomains_High.txt				dshield_sdh
Malware Exploit DNS Group

Update Frequency: Once a Day

Enable Alexa Whitelist: Enabled
https://s3.amazonaws.com/lists.disconnect.me/simple_malvertising.txt			disconnect_malvertising
http://www.malwaredomainlist.com/hostslist/hosts.txt					malwaredomainlist
http://mirror1.malwaredomains.com/files/justdomains					malwaredomains			
https://s3.amazonaws.com/lists.disconnect.me/simple_malware.txt				disconnect_malware
http://hosts-file.net/emd.txt								hphosts_emd
http://hosts-file.net/exp.txt								hphosts_exp
http://hosts-file.net/mmt.txt								hphosts_mmt
https://lists.malwarepatrol.net/cgi/getfile?receipt=f1442112770&product=8&list=dansguardian malwarepatrol
https://zeustracker.abuse.ch/blocklist.php?download=domainblocklist			zeustracker
https://malc0de.com/bl/BOOT								malc0de
SPAM DNS Group

Update Frequency: Once a Day

Enable Alexa Whitelist: Enabled
http://hosts-file.net/grm.txt								hphost_grm
http://hosts-file.net/hfs.txt								hphost_hfs
https://spam404bl.com/blacklist.txt							spam_404
Malicious DNS Group

Update Frequency: Once a Day

Enable Alexa Whitelist: Enabled
http://hosts-file.net/hphosts-partial.txt						hphost_partial
http://winhelp2002.mvps.org/hosts.txt							mvps_hosts
http://someonewhocares.org/hosts/hosts							SomeoneWhoCares
https://gist.githubusercontent.com/BBcan177/4a8bf37c131be4803cb2/raw			BBcan177
BambenekConsulting DNS Group

Update Frequency: Once a Day

Enable Alexa Whitelist: Enabled
http://osint.bambenekconsulting.com/feeds/dga-feed.gz					bambenek_dga
http://osint.bambenekconsulting.com/feeds/c2-dommasterlist.txt				bambenek_c2
Thanks
Tony M.**

BBcan177 · Dec 25, 2015, 7:22 PM

@chain:

When creating the Alias are you add them into a larger group or are you leaving them as they are individual items? Is there a limitation on amount of alias you can add to a group?

That is personal preference… There is no limit to either method...

I prefer to create an "ADs" alias, "Malicious" Alias etc instead of making an Alias with a single feed in it.... The other post that you linked has the "DNS Group Name" listed also for your reference...

cjbujold · Dec 26, 2015, 3:54 PM

Getting error when rebooting with latest PFblockerng not certain what the error is. Any help on how to fix would be appreciated.

Thanks

12-26-15 11:48:19 [ PF was wedged/busy and has been reset.]
12-26-15 11:48:40 [ There were error(s) loading the rules: pfctl: DIOCXCOMMIT: Device busy - The line in question reads [0]: ]
12-26-15 11:49:15 [ Unresolvable source alias pfB_Top_v4 for rule pfB_Top_v4 auto rule]
12-26-15 11:49:17 [ Unresolvable source alias pfB_Top_v6 for rule pfB_Top_v6 auto rule]
12-26-15 11:49:19 [ Unresolvable destination alias pfB_Top_v4 for rule pfB_Top_v4 auto rule]
12-26-15 11:49:21 [ Unresolvable destination alias pfB_Top_v6 for rule pfB_Top_v6 auto rule]

Hugovsky · Dec 26, 2015, 4:06 PM

That error is normal. It's because when you reboot pfsense, pfblock needs some time to make the alias and the firewall complains about it.

BBcan177 · Dec 26, 2015, 7:47 PM

@cjbujold:

Getting error when rebooting with latest PFblockerng

12-26-15 11:48:19 [ PF was wedged/busy and has been reset.]
12-26-15 11:48:40 [ There were error(s) loading the rules: pfctl: DIOCXCOMMIT: Device busy - The line in question reads [0]: ]

The error "PF was wedged/busy and has been reset" is an issue… When using "Alias type" rules, you can sometimes get an error when re-installing the package, or rebooting if you have a nanobsd or ramdisk installation; however, this error is indicating an error in loading the rules. Not enough information to help you diagnose it... If it persists, maybe try to uncheck "Keep Settings", and disable pfBlockerNG, then "Save". Following that re-check "Keep Settings", and re-enable, followed by a "Force Reload"... There can also be an issue with a non-pfBNG rule that is causing this issue.

Venlaw · Dec 27, 2015, 9:17 PM

Why is it that my whitelist keeps getting pushed to the bottom of my floating firewall rules when it is at the top in the IPv4 lists? It was added after the blocklists, but as stated, its been moved to the top in the IPv4 tab in pfBlockerNG? I have to manually move it to the top of the floating firewall rules every reload.

BBcan177 · Dec 27, 2015, 9:26 PM

Select the "Rule Order" setting that is appropriate for your setup in the General Tab.

Venlaw · Dec 27, 2015, 9:56 PM

Thank You.