Dark Reading is part of the Informa Tech Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them.Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

Risk

1/4/2011
10:23 AM
Connect Directly
Google+
Twitter
RSS
E-Mail
50%
50%

Top 3 Tools For Busting Through Firewalls

Can't access a Web site thanks to employer or government censorship? Fortunately, there's a host of tools and techniques that can help you slip through the blockade. Here's an in-depth look at three of the best.

How Firesheep Can Hijack Web Sessions
(click image for larger view)
Slideshow: How Firesheep Can Hijack Web Sessions

Tor's makers provide a number of different software bundles to make Tor easy to work with. Among them is Torbutton, a Firefox add-on that makes it possible to connect to Tor through Firefox via a single mouseclick. Vidalia provides a graphical control panel for Tor, giving easy access to most of its commonly changed options. Other people have also found interesting ways to repackage Tor's functionality. The makers of the Ironkey encrypted USB drive package the Firefox browser with the drive, and include the ability to route Firefox through Tor via the Torbutton.

Tor's not without drawbacks, although they can be compensated for in varying degrees. For one, Tor doesn't (and in many ways, can't) prevent traffic entering and exiting the network from being monitored. This impacts anonymity indirectly. It isn't as easy to trace back the traffic from a given exit node, but any personally identifiable information sent through Tor can be spied on at either the entrance or exit. It's a little like using a pay phone to make a tip to the police when that phone's been bugged by criminals themselves.

Tor also doesn't by itself encrypt any traffic between an exit node and the final endpoint (for instance, an email server), so the only way to guarantee the contents of the data all the way through is to use end-to-end encryption, e.g., SSL. Tor's creators have tried to counterbalance all this by providing a FAQ about how not to compromise your anonymity.

Note that services published via the hidden service protocol don't have these problems, since they're confined to the Tor network -- but that's also their biggest drawback, since only Tor users can reach them.

Because Tor's creators have tried to strike a balance between protecting anonymity and making concessions to the rest of the Internet, a number of things built into Tor can work against the people who use it. Port 25 is blocked by default, for instance, so it's not possible to use Tor as an anonymous spam relay. Many peer-to-peer ports are also blocked, since using P2P software on Tor is considered a breach of etiquette, and hogs bandwidth needed by all.

Most importantly, Tor makes it possible for Web sites to set different access policies for Tor users vs. regular users by publishing lists of Tor nodes through a queryable service.

Circumventor

Developed by Bennett Haslelton of the anti-Internet-censorship site Peacefire.org, Circumventor works a little bit like Tor in that each machine running the Circumventor software is a node in a network.

Circumventor is most commonly used to get around the Web-blocking system in a workplace or school. The user installs Circumventor on an unblocked PC -- e.g., their own PC at home -- and then uses their home PC as a proxy. Since most blocking software works by blocking known Web sites and not random IP addresses, setting up a Circumventor instance ought to be a bit more effective than attempting to use a list of proxies that might already be blocked.

Previous
2 of 5
Next
Comment  | 
Print  | 
More Insights
Comments
Newest First  |  Oldest First  |  Threaded View
DenisL857
50%
50%
DenisL857,
User Rank: Apprentice
3/14/2014 | 8:06:39 PM
this really worcks yo have helped me get youtube back because my prents are sick of me watching kung fu panda and listening too dubstep
thancks again and do you have any other research sugjestions for hacking my firewall
Zero-Factor Authentication: Owning Our Data
Nick Selby, Chief Security Officer at Paxos Trust Company,  2/19/2020
44% of Security Threats Start in the Cloud
Kelly Sheridan, Staff Editor, Dark Reading,  2/19/2020
Firms Improve Threat Detection but Face Increasingly Disruptive Attacks
Robert Lemos, Contributing Writer,  2/20/2020
Register for Dark Reading Newsletters
White Papers
Video
Cartoon
Current Issue
6 Emerging Cyber Threats That Enterprises Face in 2020
This Tech Digest gives an in-depth look at six emerging cyber threats that enterprises could face in 2020. Download your copy today!
Flash Poll
How Enterprises Are Developing and Maintaining Secure Applications
How Enterprises Are Developing and Maintaining Secure Applications
The concept of application security is well known, but application security testing and remediation processes remain unbalanced. Most organizations are confident in their approach to AppSec, although others seem to have no approach at all. Read this report to find out more.
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2020-8813
PUBLISHED: 2020-02-22
graph_realtime.php in Cacti 1.2.8 allows remote attackers to execute arbitrary OS commands via shell metacharacters in a cookie, if a guest user has the graph real-time privilege.
CVE-2020-9039
PUBLISHED: 2020-02-22
Couchbase Server 4.x and 5.x before 6.0.0 has Insecure Permissions for the projector and indexer REST endpoints (they allow unauthenticated access).
CVE-2020-8860
PUBLISHED: 2020-02-22
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Samsung Galaxy S10 Firmware G973FXXS3ASJA, O(8.x), P(9.0), Q(10.0) devices with Exynos chipsets. User interaction is required to exploit this vulnerability in that the target must answer a phone call. T...
CVE-2020-8861
PUBLISHED: 2020-02-22
This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of D-Link DAP-1330 1.10B01 BETA Wi-Fi range extenders. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of HNAP login requests. The issue ...
CVE-2020-8862
PUBLISHED: 2020-02-22
This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of D-Link DAP-2610 Firmware v2.01RC067 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of passwords. The issue results from the ...