Posts Tagged ‘tracing IP addresses’

So you thought Tor was bad enough. Check out Tor’s Hidden Web Services.

Monday, July 25th, 2011

Recently and article appeared at NPR titled “Senators Target Internet Narcotics Trafficking Website Silk Road”. I only bothered to hit the link because I saw it mentioned on the website Anit-forensics.com. The short article complained of drugs blatantly sold on the Internet and something needed to be done about it and Congress is going to solve that one for us. Although selling drugs on the Internet is nothing new, the place on the Internet “openly” selling drugs was on the Tor network through the use of Tor’s “Hidden Services” function.  The “Silk Road” is an online market open for the sale of goods and named after the ancient road used to bring goods from the orient to the west.

For the power user of the Tor network Hidden Services is probably nothing new. For the average online investigator though you may have heard of Tor and may have even tried to use it (especially of you read my last article on using Tor in your investigations). But were you aware that webpages can be hidden within the Tor network? Have you ever seen a .onion domain name? if you haven’t then read on.

Hidden services were introduced to the Tor network in 2004. Tor’s Hidden Services are run on a Tor client using special server software. This “Hidden Service” uses a pseudo top-level-domain of “.onion”. Using this domain, the Tor network routes traffic through its network without the use of IP addresses.

To get to these hidden services you must be using the Tor Network and have your browser enable to use Tor.  How do you find sites using the hidden services? Start at the core…

http://eqt5g4fuenphqinx.onion/ 

Welcome to .onion Welcome to .onion

Core.onion according to its hidden services site has been in the network since 2007.

Once in the Core.onion you find a simple directory to start exploring Hidden Services on the Tor network.

TorDir TorDir

TorDir is a directory of Hidden Services. It gives you access to a variety of sites that offer instant messaging services, email, items for sale, social media type sites and marketplaces.

Black Market Black Market

 

In the markets a variety of things are for sale, most look to be illegal though. File sharing also looks to be popular and can be found in several .onion sites.

File Sharing File Sharing

 

To make purchases bitcoin seems to be the most popular virtual currency and is regularly mentioned throughout the .onion sites.

Bitcoin Bitcoin

 

Another good location to start finding out about what Tor’s Hidden Services have to offer is a wiki located at:

http://xqz3u5drneuzhaeo.onion/users/hackbloc/index.php/Mirror/kpvz7ki2v5agwt35.onion/Main_Page

 

Also, if you are an IRC fan Tor hidden services can be used there also. The Freenode website gives the instructions on how to access Freenode IRC servers on Tor’s Hidden Services.

If you are interested in learning more about Tor’s Hidden Services here are a few sites that can get you on your way:

http://www.onion-router.net/Publications/locating-hidden-servers.pdf

http://www.irongeek.com/i.php?page=videos/tor-hidden-services

http://www.torproject.org/docs/tor-hidden-service.html.en

 

Not to make it any worse but if you have not heard Ip2 (another anonymizing network that is becoming increasingly popular) also has its own “eeepsites” similar to the Hidden Services offered in Tor that a user can post content to like a website.

Hidden Services are going to increasingly become a location that will be misused by many. It will also become a place on the Internet that investigators will need to become increasingly familiar with if they are to further their online investigations.

Tracing IP Addresses: Q&A

Friday, February 18th, 2011

We were very pleased to welcome back Dr. Gary Kessler to our “Online Investigations Basics” webinar series this week. Once again Dr. Kessler discussed some of the background and tools relevant to tracing IP addresses. Below is his companion presentation:

During the session, we took several questions from some of our listeners. One person asked whether tracing IP addresses overseas was any different from tracing them domestically. Answer: not technically; the overall process remains the same, but whether American investigators can secure foreign cooperation is a different question. The best bet is for investigators to contact legal representatives in American embassies for help dealing with law enforcement in another country.

Another participant asked whether TCP/IP packets would provide information on what kind of device accessed the Internet; in a related question, someone else asked if MAC addresses from two devices could show that they had been communicating with one another.

By themselves, packets contain no information on the type of device communicating. A device or router is needed to show where an IP address was assigned; the same is true for tracing IP addresses past a private network. And as for MAC addresses, they have only local relevance, not end-to-end applicability.

We wished we could have gotten into more detail about this question: the biggest challenges with tracing IP addresses in the cloud. As the load of traffic increases, and IPv4 addresses diminish (before IPv6 takes hold), more ISPs will begin to allow shared IP addresses. On the flip side, multiple IP addresses will be resolved to single devices.

Again, we’re grateful to Dr. Kessler for taking the time to help educate the community on a complex issue. Have questions? Please contact us. And we’d love to see you at our future “Online Investigations Basics” webinars. In another few weeks, Cynthia Navarro will be talking about online sources of information. We hope you’ll join us!

Our Online Investigations Basics webinar series is back!

Thursday, February 3rd, 2011

We’re excited to announce the return of our popular, free “Online Investigations Basics” webinar series! Designed to help investigators maximize their online evidence collection skills, the monthly webinars will feature investigative techniques and issues such as:

  • Tracing IP Addresses
  • Online Sources of Information
  • Online Identity Theft Investigations
  • Internet Relay Chat (IRC) Investigations
  • Investigating Social Media

The webinar series builds on the original series, offered in the fall of 2009, by offering both new courses and updated content from some returning instructors as well as new voices. Established experts in their fields, the Online Investigation Basics instructors will take questions from, and interact with, webinar attendees during a structured Q&A period within each 60-minute presentation. The webinars are meant for investigators from all sectors — law enforcement, corporate and independent.

In addition, we’ll continue to provide our monthly WebCase webinars, which allow investigators to get to know our software when they can’t attend our on-site training.

The first Online Investigation Basics webinar is Thursday, February 17. Dr. Gary Kessler of Gary Kessler & Associates will present “Tracing IP Addresses,” in which he will introduce concepts about the TCP/IP suite, the Internet, IP addressing and domain names, and the administration of Internet names and numbers. He will also demonstrate tools to support IP tracing.

Want to know more? Sign up today!