PfBlockerNG v2.0 w/DNSBL

BBcan177 · Apr 21, 2016, 5:04 PM

@Merchant:

I also had issue with squid with wpad initially and with BBcan177 help i resolved the issue with my setup

i updated my wpad.pac file to make direct connected to 10.10.10.1
 function FindProxyForURL(url,host)
 {
    if (isInNet( host, "192.168.0.0", "255.255.255.0" )) 
        { return "DIRECT"; }
    if (isInNet( host, "10.10.10.1", "255.255.255.0" )) 
        { return "DIRECT"; }	
    return "PROXY 192.168.0.1:3128";
 }
 
now i am able to use proxy with wpad and also get 1x1 gif while blocking

Thanks Merchant, I hope the other users that had the same issue can get this resolved also… 8)

bluepr0 · Apr 21, 2016, 5:09 PM

@BBcan177:

@bluepr0:

Hello! I just noticed today that pfBlocker is not "working" anymore. It's actually enabled and it was working fine blocking ads, now it seems nothing changed (I'm sure I haven't changed any settings) but I'm not getting ads blocked

Ensure that the LAN devices have only pfSense set as their DNS server. Can you ping the DNSBL VIP address? Can you browse to the DNSBL VIP address?

Hello BBcan177,

I can ping the IP without problems, and all my devices are using my pfsense IP as DNS (as before) so it shouldn't be a problem there. However, if by "browse the DNSBL IP" you mean that I should get a reply when trying to open it from a browser then no, I get an error

But as I said, I get ping

BBcan177 · Apr 21, 2016, 5:12 PM

@bluepr0:

I can ping the IP without problems, and all my devices are using my pfsense IP as DNS (as before) so it shouldn't be a problem there. However, if by "browse the DNSBL IP" you mean that I should get a reply when trying to open it from a browser then no, I get an error

Do you have a multi-segmented LAN? ie -vlans etc… If so, there is an option in the DNSBL Tab, to create a Floating Permit rule. Select all the Lan segments that need access to the VIP...

When you browse to the VIP, it should return the 1x1... Have you tried a different browser? or other LAN device?

bluepr0 · Apr 21, 2016, 5:19 PM

@BBcan177:

@bluepr0:

I can ping the IP without problems, and all my devices are using my pfsense IP as DNS (as before) so it shouldn't be a problem there. However, if by "browse the DNSBL IP" you mean that I should get a reply when trying to open it from a browser then no, I get an error

Do you have a multi-segmented LAN? ie -vlans etc… If so, there is an option in the DNSBL Tab, to create a Floating Permit rule. Select all the Lan segments that need access to the VIP...

When you browse to the VIP, it should return the 1x1... Have you tried a different browser? or other LAN device?

Nop, I don't have VLANs.

Tried with Chrome but I'm getting same result

But I can still ping the IP. It seems a bit weird that I'm getting 265ms though, it's just a small LAN with a 8 port switch

Thanks again!

BBcan177 · Apr 21, 2016, 5:21 PM

Are you using Squid (See posts above)?

If you can't browse to the DNSBL VIP, then it will always be slow, and you will not get any Alert logging…

BBcan177 · Apr 21, 2016, 5:26 PM

There is a new version of pfBlockerNG v2.0.11 for pfSense 2.3, which was merged today. Pull Request #114 here.

Changelog:

Fix issues with de-installation (Not sure why anyone would de-install anyways :) )
Fix an issue with 'States Removal', so that it only acts on 'Block|Reject' rules.

bluepr0 · Apr 21, 2016, 5:39 PM

@BBcan177:

Are you using Squid (See posts above)?

If you can't browse to the DNSBL VIP, then it will always be slow, and you will not get any Alert logging…

Yep, I'm using Squid. I will try to setup this wpad thing, is this guide still valid? https://doc.pfsense.org/index.php/WPAD_Autoconfigure_for_Squid

BBcan177 · Apr 21, 2016, 5:40 PM

@bluepr0:

@BBcan177:

Are you using Squid (See posts above)?

If you can't browse to the DNSBL VIP, then it will always be slow, and you will not get any Alert logging…

Yep, I'm using Squid. I will try to setup this wpad thing, is this guide still valid? https://doc.pfsense.org/index.php/WPAD_Autoconfigure_for_Squid

I don't use Squid… Try changing wpad as suggested above by user "Merchant"

bluepr0 · Apr 21, 2016, 5:42 PM

@BBcan177:

@bluepr0:

@BBcan177:

Are you using Squid (See posts above)?

If you can't browse to the DNSBL VIP, then it will always be slow, and you will not get any Alert logging…

Yep, I'm using Squid. I will try to setup this wpad thing, is this guide still valid? https://doc.pfsense.org/index.php/WPAD_Autoconfigure_for_Squid

I don't use Squid… Try changing wpad as suggested above by user "Merchant"

Umm but I'm a bit lost about changing WPAD, I couldn't find anything related to pfsense and WPAD other than the guide I pasted above (https://doc.pfsense.org/index.php/WPAD_Autoconfigure_for_Squid) or is there an option in pfBlocker for WPAD?

Abhishek · Apr 21, 2016, 5:48 PM

@bluepr0:

@BBcan177:

@bluepr0:

I can ping the IP without problems, and all my devices are using my pfsense IP as DNS (as before) so it shouldn't be a problem there. However, if by "browse the DNSBL IP" you mean that I should get a reply when trying to open it from a browser then no, I get an error

Do you have a multi-segmented LAN? ie -vlans etc… If so, there is an option in the DNSBL Tab, to create a Floating Permit rule. Select all the Lan segments that need access to the VIP...

When you browse to the VIP, it should return the 1x1... Have you tried a different browser? or other LAN device?

Nop, I don't have VLANs.

Tried with Chrome but I'm getting same result

But I can still ping the IP. It seems a bit weird that I'm getting 265ms though, it's just a small LAN with a 8 port switch

Thanks again!

pic shows you opened as http

can u try opening https://10.10.10.1 ?

bluepr0 · Apr 21, 2016, 5:50 PM

@Merchant:

@bluepr0:

@BBcan177:

@bluepr0:

I can ping the IP without problems, and all my devices are using my pfsense IP as DNS (as before) so it shouldn't be a problem there. However, if by "browse the DNSBL IP" you mean that I should get a reply when trying to open it from a browser then no, I get an error

Do you have a multi-segmented LAN? ie -vlans etc… If so, there is an option in the DNSBL Tab, to create a Floating Permit rule. Select all the Lan segments that need access to the VIP...

When you browse to the VIP, it should return the 1x1... Have you tried a different browser? or other LAN device?

Nop, I don't have VLANs.

Tried with Chrome but I'm getting same result

But I can still ping the IP. It seems a bit weird that I'm getting 265ms though, it's just a small LAN with a 8 port switch

Thanks again!

pic shows you opened as http

can u try opening https://10.10.10.1 ?

same result, sadly!

There's one thing I don't get, though! This was working flawlessly, Squid + pfBlocker (even on 2.3) as I upgraded a week ago… why it stopped working now without touching anything? o.O

Edit to add screenshot

Abhishek · Apr 24, 2016, 9:29 AM

can u click details ? see if there is option to add exception


https://www.websense.com/content/support/library/web/v76/pac_file_best_practices/PAC_best_pract.aspx

bluepr0 · Apr 21, 2016, 6:02 PM

@Merchant:

can u click details ? see if there is option to add exception

nop :(

pdrass · Apr 22, 2016, 1:16 AM

It seems like this is one massive question board for the one plugin so I'm going to ask:

I have 2.2.6-RELEASE (amd64) > in the "alerts" area of pfblockerng I don't see anything logged in the dnsbl area
I have 2.2.5-RELEASE (amd64) > in the "alerts" area of pfblockerng I see everything including https notifications of limited info but ads are still blocked

…so, is there a bug in the 2.2.6 release with respect to logging somehow?

They're 2 separate FW's but I went through the settings and they match perfectly. I also made sure the Windows server was in fact querying for DNS to the firewall and not anything else by blocking the server's IP > it then couldn't resolve external DNS hosts like google.com, yahoo.com but I could ping IP's (so not using DNS). Once I unblocked it form the firewall, DNS worked again so I KNOW it's "working" like:

hosts > query >> server >>> query firewall >>>> query public DNS + root servers

I also turned on unbound logging up to 5 or whatever the highest debug level and nothing jumped out at me...it's all "working" except for the alerts tab not showing what's blocked. I also compared a known ad site (an online newspaper) from the 2 different sites and both pages are exactly the same in IE so I think what's happening is that it's dnsbl'ing the ads just not showing them in the alerts tab.

Let me know if you find anything.

Thanks!

BBcan177 · Apr 22, 2016, 1:17 AM

There is a redmine issue for pfBlockerNG, and I'm hoping someone listening in this thread will PM me if they are experiencing this issue. I haven't been able to replicate this issue, so am reaching out to get some more specific details…

implode(): Invalid arguments passed in /usr/local/pkg/pfblockerng/pfblockerng.inc on line 4638

https://redmine.pfsense.org/issues/6229

Thanks!

BBcan177 · Apr 22, 2016, 1:20 AM

@pdrass:

…so, is there a bug in the 2.2.6 release with respect to logging somehow?

Do you have squid at this location? Is it a multi-segmented Lan? Can you ping and browse to the DNSBL VIP address? I posted above for a similar issue…

killmasta93 · Apr 23, 2016, 5:23 PM

I also had issue with squid with wpad initially and with BBcan177 help i resolved the issue with my setup

i updated my wpad.pac file to make direct connected to 10.10.10.1

So I have this on wpad.da, wpad.dat and proxy.pac

function FindProxyForURL(url,host)
 {

    if (isInNet( host, "192.168.3.0", "255.255.255.0" )) 
        { return "DIRECT"; }
	 if (isInNet( host, "10.10.10.1", "255.255.255.0" )) 
        { return "DIRECT"; }	
	return "PROXY 192.168.3.254:3128";

Yes it works the GIF BUT does not show on alert on pfBlockerNG 2.0.5 odd? Also in theory if the GIF shows should start blocking ads? I also stoped Squidguard to see if it was blocking but no go :(

on a side note, the line of code is saying to ignore 10.10.10.1 and go though? I have been trying with OpenVPN no luck for WPAD to ignore the OpenVPN server of another pfSense box.

Also my previous wpad.da, wpad.dat and proxy.pac
What is the difference from the above vs this one?

function FindProxyForURL(url, host) 
{ 
    if (isPlainHostName(host) ||
        shExpMatch(host, "*.local") ||
        isInNet(dnsResolve(host), "192.168.3.0",  "255.255.255.0"))
        return "DIRECT";

    return "PROXY 192.168.3.254:3128";
}

Abhishek · Apr 24, 2016, 9:26 AM


on a side note, the line of code is saying to ignore 10.10.10.1 and go though? I have been trying with OpenVPN no luck for WPAD to ignore the OpenVPN server of another pfSense box.


Also my previous wpad.da, wpad.dat and proxy.pac
What is the difference from the above vs this one?


function FindProxyForURL(url,host)
 {

    if (isInNet( host, "192.168.3.0", "255.255.255.0" ))  { return "DIRECT"; }
   if (isInNet( host, "10.10.10.1", "255.255.255.0" ))    { return "DIRECT"; }	
	return "PROXY 192.168.3.254:3128";

both wpad means same , if u r trying to connect to 192.168.3.0 or 10.10.10.1 using http or https it will go directly without forwarding that traffic to proxy server (192.168.3.254:3124) and last line saying all other http/https traffic should b forwarded to 192.168.3.254

killmasta93 · Apr 25, 2016, 1:19 AM

I guess your right Whats odd it wont work for OpenVPN :( but i guess my issue was that I have my DNS server forwarders with 8.8.8.8 i needed to point to pfSense and pfSense to itself and 8.8.8.8 but Not sure if that takes a tab bit longer to navigate?

EDIT: your right for the OpenVPN it worked i was putting the NET of the VPN server while it was the LAN server on which i want to connect i feel so dumb…

Abhishek · Apr 25, 2016, 5:07 AM

PfblockerNG working but not showing in pfblockerNG Alerts , i have posted a pic showing firefox dev console header showing ( Via:"1.1 localhost (squid)" ) also ping reply to that domain returning 10.10.10.1

![PFblockerNG (1).PNG](/public/imported_attachments/1/PFblockerNG (1).PNG)
![PFblockerNG (1).PNG_thumb](/public/imported_attachments/1/PFblockerNG (1).PNG_thumb)
![PFblockerNG (2).png](/public/imported_attachments/1/PFblockerNG (2).png)
![PFblockerNG (2).png_thumb](/public/imported_attachments/1/PFblockerNG (2).png_thumb)
![PFblockerNG (3).PNG](/public/imported_attachments/1/PFblockerNG (3).PNG)
![PFblockerNG (3).PNG_thumb](/public/imported_attachments/1/PFblockerNG (3).PNG_thumb)