Security :: Tools For Content Filtering In System?

Jun 22, 2009

I have already developed file type filtering functions through squid. Now I want to deal with content filtering aspects... What tools are available there for so in linux?

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General :: Inexpensive Web Content Filtering Options For Home Use?

Feb 18, 2011

I've been using an old Fortigate-60 at home for the kids for some time but now the license is expired again. Are there any free or inexpensive alternatives? I'd like something I can run on a linux firewall and share against multiple users, with different profiles. In the past I ran squid and I whitelisted sites each kid was allowed to use but this becomes tedious as the kids get older and need access to more. I'd love something that could check a website rating or category list, let the user through for certain categories, and block bad or unrated sites. I don't really need virus checking or email scanning or the like.

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Ubuntu Networking :: Parental Control/web Content Filtering?

Jul 29, 2010

I work at a cybercafe and i am currently plagued by users who, despite the warning not to, continue to watch porn and use p2p software on my connection. I have done some preliminary research on how to filter the web content as well as to reduce the bandwidth used by p2p software on my network. I found that a solution that has worked for many with regard to web content control is danguardian + squid or privoxy in conjunction with a firewall like firehol or something of the sort. Others use an os like untangle or clear os and install it on a stand alone server. then others use open dns. although i would like the open dns solution, i will need to install a dns client, ddclient and i am a linux newbie so and ddclient requires some compiling or so, and i'm not yet into that. I am also currently not in the mood to dabble into untangle or clear os bcos it will cost me a lot do download the iso's. Internet access is costly over here.

Before i go ahead to implement the steps in any of the tutorials i have seen, i am wondering if such a measure will even help at all.You see, at my cafe, i use my server to share the connection to all my clients. I connect to the internet using a gsm modem. then i have two nic's. nic1 is set to share my connection and my router connects to that nic1. nic2 connects to my router using a static ip to enable communicate with my clients. If i implement something like dansguardian on my server, will it solve the problem for me, that is, do i have to also re-implement the steps i took to configure dansguardian on all the other pc's, that is, my clients?

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Networking :: Configuring Squid Proxy For Content Filtering?

Oct 6, 2010

My network is:
ISP --> SonicWALL--> Proxy --> LAN
Currently Sonicwall is running VPN, DHCP, port forwarding etc.. in a range of and I have tried to configure Squid Proxy for content filtering (using squid 3 Transparent mode on Fedora 10 and Iptables). Now I need to implement the proxy over my network without changing the SonicWALL current settings (VPN, Port forwarding and DHCP).

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Software :: Bypass Content Filtering Without Using Such Putty - Stunnel?

Jan 14, 2010

I want to bypass my isp web content filtering with squid. i know i have to encrypt my connection between my browser and squid can i do that without using such Putty or Stunnel?which configuration i have to do on squid?

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Security :: Filtering On Same Subnet

Aug 4, 2010

Let's say I have a few hosts on the same subnet, and they are all connected to a central Linux box running a filtering bridge. If I tightly control the communications between the hosts using the filtering bridge, is this just as good as seperating hosts into different subnets (e.g. DMZ and Internal) ?

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Ubuntu Security :: Iptables: MAC Filtering With A File?

Jul 2, 2011

I'm wanting to use mac filtering to restrict access to certain machines. I already know that I can just add MACs line by line, but is there a way to specify a list of MACs? That way it would be much simpler to maintain a list of acceptable/unacceptable hosts.

I'm not going to rely only on this list because of spoofing, but it would be nice as another "layer" of protection.

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Ubuntu Security :: Filtering Connection Strings With Iptables?

Mar 12, 2011

I have several CS servers running on ubuntu server, and sometimes someone is trying to brute server's RCON password with the program called HLBrute. I've found the following rules to prevent such hack attacks, but they don't work What can be wrong in these rules?


iptables -A INPUT -p udp -m multiport --dport 26000:30000 -m string --algo kmp --string "HLBrute" -m limit --limit 1/hour --limit-burst 5 -j LOG --log-prefix " HLBrute_Ataka "
iptables -A INPUT -p udp -m multiport --dport 26000:30000 -m string --algo kmp --string "HLBrute" -j DROP

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Security :: Make Use Of Snort And Its Packet Filtering/inspection Abilities

Jul 26, 2010

I'm looking to possibly need to make use of snort and its packet filtering/inspection abilities to help cover for PCI. I've searched Amazon, but nothing really stand out, there is a new one (2007 - Snort Intrusion Detection and Prevention Toolkit), or slightly older ones... Managing Security with Snort & IDS Tools - 2004, Snort Cookbook - 2005, Snort for Dummies - 2004.

Now i'm tempted in just going for the latest one, but i'm completely new to snort so perhaps it needs another book like snort for dummies to get started ;-P

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Security :: Creating A Safer Web With Content Security Policy?

Mar 22, 2011

Quote:One of the new features in Firefox 4 that we are very excited about is Content Security Policy, which is a mechanism that works behind the scenes to prevent some of the more severe web-based attacks against users and websites.Firefox users don?t have to do anything in order to gain this protection. Simply install Firefox 4 and you will instantly receive all of the benefits that Content Security Policy has to offer. Easy!

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Fedora Security :: Script To Add Security Spin Tools To Normal Installation

May 22, 2011

love security/pentest tools. This script adds ALL the tools from the Security Spin, plus Metasploit. Feel free to modify it if need be.

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Ubuntu Security :: Tcpdump: Filtering For Packets From A Site With Mulitple Ip Addresses?

Aug 13, 2011

I want to capture all packets from site "" so I checked its ip address in an ip address look up and it was I set my filter to "dst host"However I then realised that multiple ip address point to, for example say the following ips also go to987.654.321.000111.222.333.444So is there a filter that will automatically capture all traffic going to or do I have to go and manually find all it's ip addresses and pass them all to the filter?

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Ubuntu Security :: Anti Malware Filtering Works In Open Dns Works?

Jan 13, 2010

using ubuntu and the corporate edition of open dns? >Im curious to find out how the anti malware filtering works in open dns works.

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Security :: Blocking Web Content With Iptables?

Aug 8, 2010

Is possible blocking web with content for adults with iptables?

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Security :: Fake IP To Access Content?

Jun 17, 2010

I am traveling outside US and trying to watch netflix from my computer.
However, it is blocked in my region. Is there a way to fake the IP address to looks like i am viewing the content from the US?

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Security :: Using Open Source Network Security Tools On Large Network

Jul 5, 2010

how efficient and effective are these snort, argus, ossec etc etc for an organization having 3500 PC Network, connected through 700+ Cisco Devices (Layer 2 and Layer 3), and scattered on 130 different sites (geographically)? what should be the combination of products and what should be the architecture for an efficient forensics activity?

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Ubuntu Security :: Encrypting Content With A Password Only - No Keys

Jun 1, 2010

What is the easiest way to encrypt plain text content with a password only? I need to encrypt client login information, but I hate dealing with all the unnecessary complexities of Linux's encryption systems.

I know I am going to get a bunch of people telling me how perfect Seahorse and whatever is, but Seahorse and the default /home directly encryption have both given me too many problems when decrypting my information. I prefer to preserve my data rather than using these methods.

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Ubuntu Security :: Content Filter At Remote Locations?

Aug 6, 2010

We have approximately 100 retail locations that will have split vpn tunneling. Intranet traffic will flow over the vpn to the corporate headquarters, voip traffic will tunnel to a regional hub and internet bound traffic will go over the local isp. The retail locations are small with 1-8 users and no enterprise grade equipment (servers, etc). This setup in effect will render our current content filtering solution useless.

The locations will be equipped with Cisco ASA 5505 Firewalls. The original plan was to use a Websense server and the url filtering feature to act as a content filter. I just found out that pricing for Websense was not included in the budget will be a show stopper.There may also be some performance issues with this method. Putting a proxy server at each location is not really an option. We do not have the resources to place a server at each location, plus the users could simply unplug an inline device or go around it. There is minimal supervision at most of these locations.

Ideally, I would like to find a way to use something like Dansguardian with an ldap interface and the url filtering feature of the ASA firewalls. I found a program called n2h2p, but I can find 0 documentation for it. It is also 2 years old with no updates. I also need to be able totrally manage this as trying to keep up with 100 different configurations for 400 users would be virtually impossible for the amount of time I will have available

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Ubuntu Security :: Change Permissions Of Folder's Content?

Feb 22, 2011

Recently I've tried installing Calibre from the Software Centre, but it seemed to be glitching as when I press Update Source, the 'In Progress' icon shows up, but when it finishes nothing changes - the Update Source button is still Should I report this?Anyways, I've installed Calibre from their website to .calibre in Home Folder. However, the folder is 'locked' as it requires root priveleges and I can't drop files there without being the admin. I'd like to reduce 'open as root' files to minimum, so I was wondering if there is a way to change the permissions of all the content in one operation, preferably using GUI, and not the terminal?

In addition I've noticed that other folders in my Home Folder like Pictures/Wallpapers require root privileges. This is really annoying as when I 'experiment' with Ubuntu I use Live CD to make sure I don't screw up the main system. When I do I can't open some files from hard disk because of those root inconsistencies

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Security :: Content Filter For Web / Email And Instant Messaging

Apr 12, 2010

I have been assigned a task to implement a free open source content filter having feature of web, email, instant messaging etc. If any one has the information or worked on this type of product please share it.

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Security :: Iptables Configuration Causes Web Content To Be Delivered 'slow'

Apr 26, 2011

In December 2009 I switched my web-hosting package with 1and1 to their best VPS package. What a difference! At this time I knew absolutely NOTHING about Linux sys admin stuff. Now, I know a little more I now run 'several' VPS instances (all with 1and1). Back to the problem then... On all my boxes I run CentOS 5.5 (Linux 2.6.18-028stab070.4) with various different versions of Plesk (9.5.2 and 10.2.0) The VPS instances themselves are on Virtuozzo nodes. As you may know, Virtuozzo has a firewall GUI allowing modification of iptables. I only use this when I make a mistake and cannot SSH. My 'original' iptables: (the VZ chains are controlled by the Virtuozzo container)


Chain INPUT (policy DROP)
target prot opt source destination
VZ_INPUT all -- anywhere anywhere
Chain FORWARD (policy DROP)


if this iptables chain limits the number of connections to 3 per second and 100 per second respectively, is this still secure or is there no point in having this rule? If the rule is a good one to have, then how can I allow http connections to bypass this chain/rule?

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Fedora Security :: STD Tools Ported?

Feb 3, 2010

Anyone know if the collection of STD tools have been included in Fedora repositories? Would love to recreate a STD disk based off of F12+ live cd and those tools. (Knoppix Secuity Tools Disk that seem to have died out a couple years back) Great tools, just the distro doesnt support new hardware....but if in a F12+package......all would be good.

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Fedora Security :: Can't Find Any Tools Available To Either Set It Up

Jun 20, 2011

It seems the fingerprint reader is detected, and several related packages are installed, but I can't find any tools available to either set it up. or activate it for use.

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Ubuntu :: Security Distro Or Cracking Tools?

Mar 25, 2010

I want to see how secure my company is. I am not too concerned about over the wire, more about someone hacking our wireless.

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Ubuntu Security :: Are The Tools Backtrack Uses Compatible With

Feb 23, 2011

Im trying to run some penetration testing on my home wireless and want to know if the tools that backtrack uses are available in the repository.

Specifically tools that can be used to sniff out valid mac addresses and breaking wep encryption-what tools am i looking for?

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Security :: 5 Of The Best Free Disk Encryption Tools?

Apr 10, 2011

Quote: The importance of security should never be underestimated. The consequences of losing data can be disastrous for any organisation. For example, the loss of a single unencrypted laptop may have huge repercussions. This could include breaching data protection legislation with the risk of a significant fine, a loss in the confidence of an organisation, as well as the risk that sensitive data may fall into the hands of a competitor or third party with malicious intent.

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Security :: What Tools And Techniques Do You Use To Analyze Data?

Apr 15, 2011

For those with IT jobs, how do you handle security monitoring for your company?

1.How do you determine what to monitor-- The most vulnerable assets, most critical or something else?

2.What kind of data do you collect for security monitoring purposes?

3.What tools and techniques do you use to analyze the data?

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Security :: Tools For Securing Mail Server?

May 21, 2011

iam working on mail server in redhat centos. i want to know how to secure my mail server for heavy loading , any monitoring tools in GUI or console , is any essential tool which is used in Like MNC for mail server..

i know few command in like top,netstat,etc through google but i willing to know some more

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Fedora Security :: Recommended Network Monitoring Tools?

Feb 9, 2011

I am currently running a 64-bit Fedora 14 server which hosts a game server, a voice server, and remote desktop functionality, each on a distinct TCP port. I am currently using the built-in firewall to deny all traffic other than ICMP ping/pong and TCP traffic on those specific ports.I am looking for a graphical application which will let me monitor any connections being made to my server in order to keep an eye out for possible security concerns. To be more specific, I'd like to be able to see the source IP addresses, TCP/UDP ports, and individual bandwidth in use by external connections being made to the server, along with any other information that might be helpful in identifying a possible intrusion attempt.

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Hardware :: Security Cameras And Obtain Info Tools?

May 28, 2010

I have been setting up multiple security system in the area and was wondering what was the easiest way is to get the camera information that one would need in setting up survellance systems like zoneminder. I use xawtv for testing and

PHP Code:
zmu -d <device_path> -q -v 

But how can I get specific information about NTSC/PAL cameras or IP cameras. In other words is there a specific tool for that purpose? I can see my video cameras fine using xawtv -c /dev/video but can I look at those log files to see what setting it used for the cameras

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