PfBlockerNG v2.0 w/DNSBL

todolist

Thanks for pfBlockerNG. I make heavy use of it! I have recently enabled DNSBL and am having a strange issue: When I try to access the pfSense web GUI via hostname, I am redirected to the DNSBL VIP (10.10.10.1). When I "dig firewall.domain" the pfSense box (DNS server) returns the VIP first, and then the proper IP: 10.100.0.1.

I have Unbound set to disable forwarding and enable DHCP registrations and I have a host override for "firewall.domain" pointing to it's proper IP 10.100.0.1. DNSBL "Alerts" tab shows the following:

IF: Unknown
Source: Unknown
Domain/Referer|URI|Agent: firewall.domain Not available for HTTPS alerts
List: no match

Am I missing something in the Unbound configuration? Or is it a DNSBL setting I'm missing? All other local hosts are resolving without issue, it's just pfSense itself that exhibits this behavior.

BBcan177

@todolist:

When I try to access the pfSense web GUI via hostname, I am redirected to the DNSBL VIP (10.10.10.1). When I "dig firewall.domain" the pfSense box (DNS server) returns the VIP first, and then the proper IP: 10.100.0.1.

I have Unbound set to disable forwarding and enable DHCP registrations and I have a host override for "firewall.domain" pointing to it's proper IP 10.100.0.1. DNSBL "Alerts" tab shows the following:

IF: Unknown
Source: Unknown
Domain/Referer|URI|Agent: firewall.domain Not available for HTTPS alerts
List: no match

Am I missing something in the Unbound configuration? Or is it a DNSBL setting I'm missing? All other local hosts are resolving without issue, it's just pfSense itself that exhibits this behavior.

Check your NAT and DNS Host overrides… Don't add anything manually that points to the DNSBL VIP, as that is done by the pkg automatically... Also there are some issues with the Unbound DHCP reg checkboxes... Most leave those disabled...

If you still having issues, maybe try to post in the DNS/NAT forum sections, to see if others can offer any other advice.

todolist

Thanks BBcan177! What would cause the "IF" and "Source" alerts to be "Unknown" and the "List" entry to read "no match"? Is there a debug option I can enable? I've looked through the pfBlockerNG logs tab but maybe I missed a "verbose" option?

BBcan177

Unfortunately for HTTPS requests, the IF/SRC information is not available to log… If you want to see more information run a tcpdump or wireshark... There is some help text in the DNSBL tab...

todolist

@BBcan177:

Unfortunately for HTTPS requests, the IF/SRC information is not available to log… If you want to see more information run a tcpdump or wireshark... There is some help text in the DNSBL tab...

Understood. Thanks again for this package!

DLFerguRD

Thanks for your hard work BBcan177 DNSBL in now working on pfsense 2.3 :)

cwilkinson

Hello,

I have just installed this package on a fresh install of pfSense 2.2.6, NanoBSD 4GB.

I followed your basic instructions and everything works, but after a reboot of the box the DNS Resolver Service fails to start with DNSBL enabled.

I do not have the log info at the moment, but I remember it was looking for a config file on /var that was no longer there.

Please Advise,

Thanks

hda

Services-DNS Resolver Advanced: delete config entry (that file has been lost). Save. Start Resolver.
pfBlockerNG-Update: Force Update.

cwilkinson

I already know how to fix it like that but that requires manual intervention, after a reboot that's not very useful.

cipherson

Hey Guys,

The latest version of pfsense/pfBlockerNG seems to have issues with the "ET IQRisk" list

I just updated my pfsense to the latest 2.2.6-RELEASE built on Mon Dec 21.

I noticed in the pfBlockerNG that my Alias for IQRisk only have an IP count of 1.

I review all the settings and they seemed to be messed up. Following the steps on the Repuation tab it says:
"Select the ET IQRisk' format. The URL should use the .gz File Type. Enter your "ETPRO" code in URL. Further information can be found @ ET IQRisk IP Reputation"
This format type is not longer listed and the help URL is no longer valid.

Any thoughts on how to fix this? Did they remove support for this list?

Also posted via reddit on /r/PFSENSE

https://www.reddit.com/r/PFSENSE/comments/428ehb/latest_pfblockerng_et_iqrisk_format_missing/

cipherson

**Update

After some messing around an point this to the file after stripping out the IPs it still has issues.

[ mine ] Downloading update .. 200 OK. completed .. Empty file, Adding '1.1.1.1' to avoid download failure.

maybe the file is has to much data and the download is timing out? leaving the file empty and failing to add any IPs.

BBcan177

Hi cipherson,

Emerging Threats was bought out by Proofpoint last year. I had a developer subscription to this list, but since it was bought out by Proofpoint, they didn't renew it, so if they made any changes, I am unable to help support any changes.

The previous URL used to be as follows (Changing the X's to your Proofpoint subscription id):
https://rules.emergingthreatspro.com/XXXXXXXXXXXXXXXX/reputation/iprepdata.txt.gz

If you enter that URL in the browser, does the file download? I would assume that the URL would have changed also.

If the URL is ok, post some screenshots of the Reputation tab (ET IQRISK) and obfuscate your Subscription ID…

cipherson

Hey BBcan177

I can download the file fine by hand and the URL structure is the same.

The file format still also looks the same:

ip, category, score

I also downloaded the file, pulled out only the IP addresses and re-served the file on a local webserver just as an IP list and it has the same download issues.

During the update it hangs on the download of this large file (6.9 MB) for about 90 seconds with the following:

[ ETIQRisk ] Downloading update .. 200 OK.

Then says the file is empty:

Empty file, Adding '1.1.1.1' to avoid download failure.

So its not event getting to download the file correctly.

Anyway to debug the pull script? maybe add more verbose logging?

BBcan177

When you see "200 ok", that means that the file was downloaded successfully… So the issue is in the parsing of the file...

How many Lists did you select in the Reputation Tab - IQRisk Select Menu?

If you are using Country Blocking and other lists, it could also be that the IPs are duplicates which could report "1.1.1.1" which is an empty file placeholder... Maybe try to move the IQRisk as the first pfBNG Alias and execute a "Force Reload"...

cipherson

Currently 20 in the list.

I lower it to 1 option and added the IQRISK to the top, disabled all CC and other IPv4 lists

Going to try a reinstall on this plugin to see if it helps

Output from Cron:

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

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

[ ETIQRisk ] Downloading update .. 200 OK.. completed ..
Empty file, Adding '1.1.1.1' to avoid download failure.

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

No changes to Firewall rules, skipping Filter Reload

Updating: pfB_ETIQRisk
no changes.

===[ FINAL Processing ]=====================================

cat: /var/db/pfblockerng/original/Block: No such file or directory
cat: All_custom.orig: No such file or directory
[ Original IP count ] [ 32 ]

===[ Deny List IP Counts ]===========================

1 total
1 /var/db/pfblockerng/deny/ETIQRisk.txt

====================[ Empty Lists w/1.1.1.1 ]==================

ETIQRisk

====================[ Last Updated List Summary ]==============

Jan 22 21:06 ETIQRisk

IPv4 alias tables IP count
–---------------------------
1

IPv6 alias tables IP count

0

Alias table IP Counts

1 /var/db/aliastables/pfB_ETIQRisk.txt

pfSense Table Stats

table-entries hard limit 2000000
Table Usage Count 3725

UPDATE PROCESS ENDED [ 01/22/16 21:07:30 ]

BBcan177

It's hard to troubleshoot without being able to test the file. I sent you a PM, if you are interested to do a TeamViewer session, I can see it live and be able to sort it out for you.

cipherson

BBcan177 has fixed this issue!

jarrad

Hi all

I seem to have a misconfiguration with the DNSBL. Specifically when Google tries to throw ads at me from their subsidiary Doubleclick I keep getting invalid certificate errors. Inspecting the certificate shows it looks like a generic certificate with all the default values you would expect from someone just hitting "OK" or something.

I've had a search around and I can't seem to find what's causing it.

Any suggestions?

heliop100

Hi

Today I have one MX host blocked. E-mail on queue, not ping, not telnet.
The host was smtp.one2one.com.br (192.99.8.87)
I look for it on pfBlockerNG (v2.04) alerts, on system logs/firewall, and on states.
not found.
but when I disable pfBlockerNG I was able to send the messages. (ping, telnet)

Now I enable pfBloquerNG again, and that IP are blocked again.

How can I supress that IP?
Thanks.

RonpfS

Did you enable DNSBL ? Maybe it is the domain that is blocked. You should be able to see it in the pfBlockerNG: Alerts.

If it is the IP that is blocked, you should normally see it in pfBlockerNG: Alerts as well as in the Status: System logs: Firewall

Do you have Suppression enabled in the pfBlockerNG: General Settings? Read the instructions there and update the pfBlockerNGSuppress Alias to include that ip.