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0
votes
0answers
120 views

Blocking HTTPS content with a Watchguard (Websense) vs. SQUID and SQUIDGuard using Transparent Proxy mode

I'm trying to compare these 2 solutions when it comes to content blocking : 1 - A pFSense appliance with SQUID and SQUIDGUARD packages configured 2 - A Watchguard FW that uses Websense So, in order ...
0
votes
1answer
648 views

Bypass squid proxy [closed]

I have a transparent squid proxy that I am using to filter out ads from web traffic which works well enough, however I would like to have the option of bypassing the proxy as well at times when I do ...
1
vote
1answer
492 views

Postfix After-Queue Content Filter, advanced filter not working

I followed the instructions in the postfix website on how to setup a content filter, I got the simple example up and running fairly quick, but after long hours of struggle I couldnt get the advanced ...
0
votes
1answer
25 views

are there downsides to hosting an .exe file on a linux server [closed]

Client has decided to use a technology that has an "offline" version using an .exe file on a web server. Is there any downside to hosting an .exe file, ie. may it get you blocked or rated/ marked in ...
2
votes
1answer
376 views

Content filter on exchange 2013 - not working as expected

I just setup a new ex2013 server, and we have an upstream spam filter that adds the word "[SPAM]" to the subject line if it suspect incoming spam. I want to configure my ex2013 server to delete any ...
-3
votes
1answer
74 views

Guest access through hotspots (proxies with a ToS to accept) don't consistently work [closed]

I've noticed that certain websites (Facebook) don't reliably initiate a hotspot login when compared to others (google.com). In other words, when a user connects for the first time to a hotspot they ...
3
votes
3answers
826 views

BYOD and Google SSL

I run a school network with a BYOD program in place. I have a linux proxy (squid) with content filtering by Mind (fork of dansguardian). Everything works fine over HTTP, the problem is of corse when ...
-1
votes
1answer
261 views

dnsmasq content filter [closed]

Is it possible so use dnsmasq as a selective content filter (just for specified clients - defined by their MAC address) I know how to create a global content filter. I know that a proxy should be ...
1
vote
0answers
207 views

Blue Coat - Blacklist list import

Is there a way to mass import domains into Blue Coat blacklist ? I get daily feeds from various sources and I was thinking whether I can modify the input file to a format to meet Blue coat ...
2
votes
1answer
900 views

How To Enable HTTPS filtering with Squid3 and Qlproxy?

I'm trying to set my proxy to filter HTTPS traffic just like the HTTP traffic. I have followed this guide for setup SSLBump If I set it, even the HTTP traffic won't be accepted through the proxy. ...
2
votes
1answer
134 views

Is there any application/firewall to detect content scrapers? [closed]

We are noticing that a significant amount of web traffic is from content scrapers (determined due to their crawling pattern). They are useless visitors to us but consume a lot of our resources ...
0
votes
1answer
222 views

Manually set Reply-To header in postfix

I have a legacy application that emails via php. 5% of the emails aren't going through. The solution is to route all email through a fancy verified mail server like Amazon's SES. I am having some ...
0
votes
1answer
185 views

Do not allow internet connection for users that have set a proxy in their browser

I installed dansguardian in my Linux server. Everything works well except one thing: if a user sets a different proxy (outside my LAN) in his browser, he'll be able to bypass dansguardian. Can anybody ...
-2
votes
4answers
630 views

postfix php filter

I'm trying to filter email using a php script, what I want to do is process the email into a database when it matches a set of rules. The rules are going to be made using an array of PHP strings and ...
-1
votes
1answer
112 views

Enterprise web filter [closed]

So we have a Barracuda web filter, but it's on its last leg, as we bought it many years ago. I've put off on updating the firmware, as in the new version they remove Bittorrent filtering. To me, ...
0
votes
1answer
322 views

DansGuardian: content regexp list for exact sites, how?

We have contentregexplist file where we can write all substitutions like "source regex"->"dest string" And they ALL run for each page. Is it possible somehow to define a domain name(s) for which ...
0
votes
1answer
4k views

Exchange 2010 Global “Safe Senders” list, avoid blocking images from corporate domain?

I've created an email template that is used in our Process Automation software to send out email updates for various reasons. I've included our corporate logo via an IMG tag with a src pointing to ...
0
votes
2answers
201 views

Category based content filtering for main and remote sites

Problem: I have one main location and about 5 remote sites. The remote sites use the DNS at the main location but have their own internet connection. I would like to implement something at the main ...
1
vote
2answers
148 views

Small business, affordable content filter for windows domain controller? [closed]

Our church has been gifted an old Dell Poweredge box which we'd like to use as a DC and content filter for our LAN. We have about 5 PCs on site full time which will make use of the DC and access it's ...
1
vote
1answer
791 views

Is it possible to use another blacklist with Qlproxy? (QuintoLabs Content Security)

Im using the Qlproxy content filter. It use the urlblacklist. But that blacklist is full of false positives! Is there a better black list? How to use it with qlproxy?
1
vote
1answer
1k views

Exchange 2010 and FPE Content Filtering

I have a box running Server 2008 R2, Exchange 2010 SP1, and Forefront Protection for Exchange 2010. The issue is that I cannot for the life of me get my content filters to quarantine a single message ...
0
votes
2answers
635 views

Is there a open source captive portal with category based content filtering available?

I was thinking about deploying pfSense but then I realized there isn't a solid content filtering option with it. I know there are some squid addons but they seem cumbersome and not fully matured. ...
0
votes
2answers
590 views

Is it possible to filter/edit web content using Apache/Nginx/Lighttpd?

Is it possible to use any of the following HTTP servers: Apache, Nginx or Lighttpd as a proxy to make the following: Disallow certain HTTP bodies (web pages) based on their content (e. g., words) ...
2
votes
3answers
2k views

Determine if user has hotfix # 981889 installed?

I want to know if a particular computer has MS HotFix #981889 installed. To do that I check file versions. This page lists file versions that the hotfix deals with. However, I cannot figure out: Do ...
0
votes
3answers
538 views

Web filtering/Captive portal solution

I've been asked to setup access control/filtering on a network that has it's own address block (a /24). This is for students who will be connecting to the wireless network. Requirements are as ...
1
vote
2answers
3k views

Opensource Content Filtering

We are planning to introduce a web content filtering on our newly created LAN environment. I am inclined towards opensource alternatives to ISA server. I came across uTangle and they seem to have a ...
0
votes
1answer
478 views

quarantine mailbox not receiving quarantined items exchange 2010 anti-spam content filtering

On exchange 2010, i have the anti-spam features installed on the hub transport. I have the content filtering enabled, with quarantine if the scl is higher than 7. this is the only option i have turned ...
0
votes
1answer
159 views

Prevent users to download web-contents with url and network exceptions via GPO

We have server 2003, AD domain. Our clients XP, and W7 with IE7 IE8 browsers. We use two types of internet. Use the internet inside the company network, and use mobile-net at home, with the same ...
3
votes
10answers
2k views

Block facebook even in the case users get their hands on tor, freegate and similar applications

I've been using, happily, opendns to block facebook on my network. Then I started thinking about tricks to circumvent this block and, of course, I've read here on serverfault how to block the facebook ...
1
vote
0answers
304 views

Microsoft TMG 2010 Sp1 override if authenticated?

I have a TMG 2010 SP1 server running on Server 2008 R2 in a single-NIC configuration - not live yet. I will be allowing web access in three fashions: one method is using the TMG as the default ...
0
votes
2answers
604 views

Restricting Internet access for Windows users using Ubuntu Server + Webmin

I want to restrict the Internet usage for a couple of Windows users on a network. The Server is a Ubuntu 10.04 Server running Webmin - all Windows users are setup as users on the Ubuntu server to ...
0
votes
2answers
1k views

Web filtering (Proxy or DNS) with option for users to ignore the block

We are struggling with our users visiting infected or "attack" sites and Phising in general. Most of our machines are protected by an Enterprise anti virus and monitoring solution (McAffe ePO) and we ...
0
votes
2answers
196 views

Web Content Filtering

I have recently bought a Cisco ASA 5505 for my small business, I was initially led to believe this device could do some limited website filtering that we would need. (one list of unrestricted, and a ...
2
votes
0answers
364 views

Exchange 2007 delivering messages flagged as SPAM

I have an SBS 2008 box running Exchange 2007. Mail is delivered directly to the Exchange machine from the Internet via a receive connector (I have already advised people that it would be better to use ...
2
votes
2answers
3k views

Log and Block Website using Windows 2008 SBS

A client has asked me to setup Windows 2008 SBS to block and log websites from a list they will provide. As far as I know they only have standard edition which means I cannot use ISA. I was thinking ...
0
votes
4answers
1k views

Why would a web server set the content type of a redirect to application\octet-stream

I have taken steps to prevent software from being downloaded from the Internet as it was being abused by students. This was implemented using ISA 2006's Content Type filter condition "Application". ...
2
votes
4answers
2k views

Open Source project that does SSL Inspection

I've been assigned to research out and spec replacing our old and decrepit http content filtering system. There are several open source filtering packages available but I've not come across one that ...
1
vote
1answer
2k views

What content blocker is this?

I was using browsershots.org to check out what our redesigned Web site looks like in different browsers. One of the distributed VMs giving results (specifically, vm-fab-964) apparently lives behind a ...
1
vote
6answers
472 views

How to Approach Web Filtration?

My company recently implemented a content filtration system (Websense) which ranges anywhere from mildly irritating to enraging depending on what useful website it's blocking and what program I have ...
2
votes
4answers
553 views

Web Content Filtering Recommendations [closed]

We have a corporate MPLS network hosted by a large ISP. Each site has it's own dedicated path to the Internet, so there is no single point of Internet access to place a filtering appliance. We've ...