Unofficial E2guardian package for pfSense

ravegen

ok thanks Marcelloc

ravegen

Marcelloc, what auth plugins ip address ?

Why are some options have (on) and some are (off) ?
What does on and off means there ?

Also I checked on console e2guardian -version, it only show '–enable-sslmitm' and not '--enable-sslmitm=yes', does that mean e2guardian installation does not support SSL traffic interception ?

Running in debug mode…
e2guardian 5.1.0

Built with: '--localstatedir=/var' '--with-logdir=/var/log' '--with-piddir=/var/run' '--with-zlib=/usr' '--enable-fancydm' '--disable-clamd' '--disable-commandline' '--with-dgdebug=on' '--enable-dnsauth' '--disable-email' '--enable-icap' '--disable-kavd' '--enable-ntlm' '--enable-sslmitm' '--enable-trickledm' '--prefix=/usr/local' '--mandir=/usr/local/man' '--disable-silent-rules' '--infodir=/usr/local/info/' '--build=amd64-portbld-freebsd11.1' 'build_alias=amd64-portbld-freebsd11.1' 'CXX=c++' 'CXXFLAGS=-pipe -I/usr/local/include -D__SSLMITM -D__SSLCERT -DLIBICONV_PLUG -g -fstack-protector -fno-strict-aliasing -DLIBICONV_PLUG -std=c++11' 'LDFLAGS= -lssl -lcrypto -fstack-protector' 'LIBS=' 'CPPFLAGS=-I/usr/local/include -DLIBICONV_PLUG' 'CC=cc' 'CFLAGS=-pipe -I/usr/local/include -D__SSLMITM -D__SSLCERT -DLIBICONV_PLUG -g -fstack-protector -fno-strict-aliasing' 'CPP=cpp' 'PKG_CONFIG=pkgconf'

marcelloc

@ravegen:

Marcelloc, what auth plugins ip address ?

Check groups based on clients IP address.

@ravegen:

Why are some options have (on) and some are (off) ?
What does on and off means there ?

on and off are the default config options. Check all (on) options to use setup defaults. Most are selected automatically on package install. Any option you select, will be enabled on config files.

@ravegen:

Also I checked on console e2guardian -version, it only show '–enable-sslmitm' and not '--enable-sslmitm=yes', does that mean e2guardian installation does not support SSL traffic interception ?

It has traffic interception compiled. Select the CA under daemon tab to enable check certificate sites (splice all feature on squid) and Filter SSL under group options to intercept the connection with MTIM(requires the CA installed on clients browser to work correctly)

ravegen

Marcelloc, is it fine to create the INTERNAL CA using pfsense system/certificate manager/CAs OR should it be done thru console as you have said here https://github.com/e2guardian/e2guardian/wiki/MITM–-Filtering-HTTPS, Generating the necessary SSL certs.

marcelloc

Create from GUI (system/certificate manager/CAs). On pfSense, there is no need to create certificates under console.

ravegen

Thanks for confirming.

Another thing is:

1. If I download the shallalist, how will I know that it is done downloaded aside from the message prompt ?

2. In the Group Menu, the is this Pics (option) under Access List , where is that Pics in the ACL ?

PS: Even if I uncheck / disable the E2Guardian in the daemon page, it still shows STARTED / RUNNING on the status/services.

ravegen

Marcelloc,

I have followed your youtube example, I create the CA on pfsense gui, I selected filter ssl sites forging ssl certificate, save, and applied,
but when I visit https sites, I get the following error on my chrome browser. I am using 2.4.3 pfsense version.

I even tried install the CA cert on my browser but still the same error.

Your connection is not private
Attackers might be trying to steal your information from forum.pfsense.org (for example, passwords, messages, or credit cards). Learn more
NET::ERR_CERT_AUTHORITY_INVALID

Automatically send some system information and page content to Google to help detect dangerous apps and sites.

UPDATE 5.14.2018 3:45pm :

Since I am getting this error above, I tried to shutdown my chrome browser. And I tried again surfing https sites, and it is ok now.
So Marcelloc, does this mean, I need to install the CA certificate on client browsers ?

marcelloc

Option 1 Select the CA under daemon tab to enable check certificate sites (splice all feature on squid). No certificate is required on client.

Option 2 select option1 and Filter SSL under group options to intercept the connection with MTIM(requires the CA installed on clients browser to work correctly)

ravegen

@marcelloc:

Option 1 Select the CA under daemon tab to enable check certificate sites (splice all feature on squid). No certificate is required on client.

Option 2 select option1 and Filter SSL under group options to intercept the connection with MTIM(requires the CA installed on clients browser to work correctly)

Yes I have selected the CA under daemon tab. What is option1? I have also selected Filter SSL under group options. I have followed all in your youtube video sample.

However, I have resolved it by installing the CA certificate on client browsers. But I need it to be that I don't need to install the CA cert on the client browsers.

marcelloc

You can configure ssl with or without interception. Follow option 1 to only check certificate but do not intercept
Follow option 2 to check certificate and intercept connection.

If you do not want to install certificate on client, do not enalbe filter ssl on group options.

ravegen

@marcelloc:

You can configure ssl with or without interception. Follow option 1 to only check certificate but do not intercept
Follow option 2 to check certificate and intercept connection.

If you do not want to install certificate on client, do not enalbe filter ssl on group options.

Like I said, I have done option 2, which is selecting the filter SSL in group options. That is why I wonder what is lacking in what I have followed. I have checked the configurations more than 10 times already.

ravegen

marcelloc, is there a possibility that on your youtube, you have installed CA in your browser?

marcelloc

Sarg package is alive again on unofficial repo to create e2guardian reports.

As I updated repository structure recently, update the repository file before package installation.

fetch -q -o /usr/local/etc/pkg/repos/Unofficial.conf https://raw.githubusercontent.com/marcelloc/Unofficial-pfSense-packages/master/Unofficial.conf

ravegen

Marcelloc,

I have reinstall pfsense again awhile ago and followed your youtube again up to the point where you deselected Filter SSL in group options. In your example, when you browsed facebook, it should err_ssl_protocol_error but on my case, it still opened facebook site even I restart my Chrome browser.

UPDATE1: I have fixed this err_ssl_protocol_error by setting my ip address configuration of my computer to automatic. However, my new problem is back to

Your connection is not private
Attackers might be trying to steal your information from forum.pfsense.org (for example, passwords, messages, or credit cards). Learn more
NET::ERR_CERT_AUTHORITY_INVALID

Automatically send some system information and page content to Google to help detect dangerous apps and sites.

Please advice Marcelloc.

marcelloc

@ravegen:

NET::ERR_CERT_AUTHORITY_INVALID

This means you are on the same point as 3 posts before.

Do not select Filter ssl sites forging SSL certificates if you do not have firewall CA installed on your client's browser.

ravegen

@marcelloc:

@ravegen:

NET::ERR_CERT_AUTHORITY_INVALID

This means you are on the same point as 3 posts before.

Do not select Filter ssl sites forging SSL certificates if you do not have firewall CA installed on your client's browser.

Sure I can deselect Filter SSL Sites forging SSL Certificates but doing so will get me err_ssl_protocol_error.

This site can’t provide a secure connection
www.facebook.com sent an invalid response.
Try running Windows Network Diagnostics.
ERR_SSL_PROTOCOL_ERROR

UPDATE 1:

So I read that Splice All:
This configuration is suitable if you want to use the SquidGuard package for web filtering.
All destinations will be spliced. SquidGuard can do its job of denying or allowing destinations according its rules, as it does with HTTP.
You do not need to install the CA certificate configured below on clients.

And it is mentioned that E2Guardian SSL interception is "Option 1 Select the CA under daemon tab to enable check certificate sites (splice all feature on squid). No certificate is required on client."

And also in the youtube video, before you selected the Filter SSL Sites forging SSL Certificates, you also got err_ssl_protocol_error while surfing to facebook and youtube.com

I can only think of two things:
1. You need to install the CA on client browser and select Filter SSL Sites forging SSL Certificates OR
2. There is something broken with E2Guardian as it does not do MITM (SSL Interception)

My goal here is to do http and https mitm ssl interception without having to install CA on client browsers.

marcelloc

@ravegen:

I can only think of two things:
1. You need to install the CA on client browser and select Filter SSL Sites forging SSL Certificates OR
2. There is something broken with E2Guardian as it does not do MITM (SSL Interception)

Nothing is broken on e2guardian. All you need is to understand how ssl proxy/filtering/secure connections works just like e2guardian team answered you on github.

If you do not intercept with MITM, there is no way to show a denied error on ssl conections. All any proxy/firewall can do is reject a ssl connection when the site certificate has an fqdn that is denied on your acls. When it happens all the browser can tell you is show you the protocol error message.

ravegen

so to conclude, we really need to install CA cert on client browser for MITM to work and no other way.

marcelloc

@ravegen:

so to conclude, we really need to install CA cert on client browser for MITM to work and no other way.

NO!!!!!!

There is a really BIG difference between INVALID CERTIFICATE and CONNECTION REFUSED/FAILED.

Please, read the documentation e2guardian team sent to you, seriously .

https://openschoolsolutions.org/pfsense-web-filter-filter-https-squidguard/

ravegen

like I said, i followed your youtube video but in the end, i got error, that is why i asked you if you have preinstalled CA in your browser.